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Posted to commits@ignite.apache.org by sb...@apache.org on 2017/04/18 05:25:49 UTC
[34/54] [abbrv] ignite git commit: IGNITE-5000 Rename Ignite Math
module to Ignite ML module
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/DiagonalMatrixStorage.java
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diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/DiagonalMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/DiagonalMatrixStorage.java
new file mode 100644
index 0000000..099db38
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/DiagonalMatrixStorage.java
@@ -0,0 +1,136 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.matrix;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.math.MatrixStorage;
+import org.apache.ignite.math.Vector;
+import org.apache.ignite.math.exceptions.UnsupportedOperationException;
+
+/**
+ * {@link MatrixStorage} implementation for diagonal Matrix view.
+ */
+public class DiagonalMatrixStorage implements MatrixStorage {
+ /** Backing vector for matrix diagonal. */
+ private Vector diagonal;
+
+ /**
+ *
+ */
+ public DiagonalMatrixStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param diagonal Backing {@link Vector} for matrix diagonal.
+ */
+ public DiagonalMatrixStorage(Vector diagonal) {
+ assert diagonal != null;
+
+ this.diagonal = diagonal;
+ }
+
+ /**
+ *
+ */
+ public Vector diagonal() {
+ return diagonal;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int x, int y) {
+ return x == y ? diagonal.get(x) : 0.0;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int x, int y, double v) {
+ if (x == y)
+ diagonal.set(x, v);
+ else
+ throw new UnsupportedOperationException("Can't set off-diagonal element.");
+ }
+
+ /** {@inheritDoc} */
+ @Override public int columnSize() {
+ return diagonal.size();
+ }
+
+ /** {@inheritDoc} */
+ @Override public int rowSize() {
+ return diagonal.size();
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(diagonal);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ diagonal = (Vector)in.readObject();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return diagonal.isSequentialAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return diagonal.isDense();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return diagonal.isRandomAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return diagonal.isDistributed();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + diagonal.hashCode();
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ DiagonalMatrixStorage that = (DiagonalMatrixStorage)o;
+
+ return diagonal.equals(that.diagonal);
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/FunctionMatrixStorage.java
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diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/FunctionMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/FunctionMatrixStorage.java
new file mode 100644
index 0000000..6b0c6b4
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/FunctionMatrixStorage.java
@@ -0,0 +1,175 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.matrix;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.math.MatrixStorage;
+import org.apache.ignite.math.exceptions.UnsupportedOperationException;
+import org.apache.ignite.math.functions.IntIntDoubleToVoidFunction;
+import org.apache.ignite.math.functions.IntIntToDoubleFunction;
+
+/**
+ * Read-only or read-write function-based matrix storage.
+ */
+public class FunctionMatrixStorage implements MatrixStorage {
+ /** */ private int rows;
+ /** */ private int cols;
+
+ /** */ private IntIntToDoubleFunction getFunc;
+ /** */ private IntIntDoubleToVoidFunction setFunc;
+
+ /**
+ *
+ */
+ public FunctionMatrixStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param rows Amount of rows in the matrix.
+ * @param cols Amount of columns in the matrix.
+ * @param getFunc Function that returns value corresponding to given row and column index.
+ * @param setFunc Set function. If {@code null} - this will be a read-only matrix.
+ */
+ public FunctionMatrixStorage(int rows, int cols, IntIntToDoubleFunction getFunc,
+ IntIntDoubleToVoidFunction setFunc) {
+ assert rows > 0;
+ assert cols > 0;
+ assert getFunc != null;
+
+ this.rows = rows;
+ this.cols = cols;
+ this.getFunc = getFunc;
+ this.setFunc = setFunc;
+ }
+
+ /**
+ * @param rows Amount of rows in the matrix.
+ * @param cols Amount of columns in the matrix.
+ * @param getFunc Function that returns value corresponding to given row and column index.
+ */
+ public FunctionMatrixStorage(int rows, int cols, IntIntToDoubleFunction getFunc) {
+ this(rows, cols, getFunc, null);
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int x, int y) {
+ return getFunc.apply(x, y);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int x, int y, double v) {
+ if (setFunc != null)
+ setFunc.apply(x, y, v);
+ else
+ throw new UnsupportedOperationException("Cannot set into read-only matrix.");
+ }
+
+ /**
+ *
+ */
+ public IntIntToDoubleFunction getFunction() {
+ return getFunc;
+ }
+
+ /**
+ *
+ */
+ public IntIntDoubleToVoidFunction setFunction() {
+ return setFunc;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int columnSize() {
+ return cols;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int rowSize() {
+ return rows;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(setFunc);
+ out.writeObject(getFunc);
+ out.writeInt(rows);
+ out.writeInt(cols);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ setFunc = (IntIntDoubleToVoidFunction)in.readObject();
+ getFunc = (IntIntToDoubleFunction)in.readObject();
+ rows = in.readInt();
+ cols = in.readInt();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ FunctionMatrixStorage that = (FunctionMatrixStorage)o;
+
+ return rows == that.rows && cols == that.cols
+ && (getFunc != null ? getFunc.equals(that.getFunc) : that.getFunc == null)
+ && (setFunc != null ? setFunc.equals(that.setFunc) : that.setFunc == null);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = rows;
+
+ res = 31 * res + cols;
+ res = 31 * res + (getFunc != null ? getFunc.hashCode() : 0);
+ res = 31 * res + (setFunc != null ? setFunc.hashCode() : 0);
+
+ return res;
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/MatrixDelegateStorage.java
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diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/MatrixDelegateStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/MatrixDelegateStorage.java
new file mode 100644
index 0000000..2e1fc12
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/MatrixDelegateStorage.java
@@ -0,0 +1,205 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.matrix;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.math.MatrixStorage;
+
+/**
+ * {@link MatrixStorage} implementation that delegates to parent matrix.
+ */
+public class MatrixDelegateStorage implements MatrixStorage {
+ /** Parent matrix storage. */
+ private MatrixStorage sto;
+
+ /** Row offset in the parent matrix. */
+ private int rowOff;
+ /** Column offset in the parent matrix. */
+ private int colOff;
+
+ /** Amount of rows in the matrix. */
+ private int rows;
+ /** Amount of columns in the matrix. */
+ private int cols;
+
+ /**
+ *
+ */
+ public MatrixDelegateStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param sto Backing parent storage.
+ * @param rowOff Row offset to parent matrix.
+ * @param colOff Column offset to parent matrix.
+ * @param rows Amount of rows in the view.
+ * @param cols Amount of columns in the view.
+ */
+ public MatrixDelegateStorage(MatrixStorage sto, int rowOff, int colOff, int rows, int cols) {
+ assert sto != null;
+ assert rowOff >= 0;
+ assert colOff >= 0;
+ assert rows > 0;
+ assert cols > 0;
+
+ this.sto = sto;
+
+ this.rowOff = rowOff;
+ this.colOff = colOff;
+
+ this.rows = rows;
+ this.cols = cols;
+ }
+
+ /**
+ *
+ */
+ public MatrixStorage delegate() {
+ return sto;
+ }
+
+ /**
+ *
+ */
+ public int rowOffset() {
+ return rowOff;
+ }
+
+ /**
+ *
+ */
+ public int columnOffset() {
+ return colOff;
+ }
+
+ /**
+ *
+ */
+ public int rowsLength() {
+ return rows;
+ }
+
+ /**
+ *
+ */
+ public int columnsLength() {
+ return cols;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int x, int y) {
+ return sto.get(rowOff + x, colOff + y);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int x, int y, double v) {
+ sto.set(rowOff + x, colOff + y, v);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int columnSize() {
+ return cols;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int rowSize() {
+ return rows;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return sto.isArrayBased() && rowOff == 0 && colOff == 0;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return sto.isSequentialAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return sto.isDense();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return sto.isRandomAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return sto.isDistributed();
+ }
+
+ /** {@inheritDoc} */
+ @Override public double[][] data() {
+ return sto.data();
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(sto);
+
+ out.writeInt(rowOff);
+ out.writeInt(colOff);
+
+ out.writeInt(rows);
+ out.writeInt(cols);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ sto = (MatrixStorage)in.readObject();
+
+ rowOff = in.readInt();
+ colOff = in.readInt();
+
+ rows = in.readInt();
+ cols = in.readInt();
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + rows;
+ res = res * 37 + cols;
+ res = res * 37 + rowOff;
+ res = res * 37 + colOff;
+ res = res * 37 + sto.hashCode();
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ MatrixDelegateStorage that = (MatrixDelegateStorage)o;
+
+ return rows == that.rows && cols == that.cols && rowOff == that.rowOff && colOff == that.colOff &&
+ (sto != null ? sto.equals(that.sto) : that.sto == null);
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/PivotedMatrixStorage.java
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diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/PivotedMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/PivotedMatrixStorage.java
new file mode 100644
index 0000000..32c8624
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/PivotedMatrixStorage.java
@@ -0,0 +1,256 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.matrix;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.util.Arrays;
+import org.apache.ignite.math.MatrixStorage;
+
+/**
+ * Pivoted (index mapped) view over another matrix storage implementation.
+ */
+public class PivotedMatrixStorage implements MatrixStorage {
+ /** Matrix storage. */
+ private MatrixStorage sto;
+
+ /** */
+ private int[] rowPivot;
+ /** */
+ private int[] colPivot;
+ /** */
+ private int[] rowUnpivot;
+ /** */
+ private int[] colUnpivot;
+
+ /**
+ *
+ */
+ public PivotedMatrixStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param sto Matrix storage.
+ * @param rowPivot Pivot array for rows.
+ * @param colPivot Pivot array for columns.
+ */
+ public PivotedMatrixStorage(MatrixStorage sto, int[] rowPivot, int[] colPivot) {
+ assert sto != null;
+ assert rowPivot != null;
+ assert colPivot != null;
+
+ this.sto = sto;
+ this.rowPivot = rowPivot;
+ this.colPivot = colPivot;
+
+ rowUnpivot = invert(rowPivot);
+ colUnpivot = invert(colPivot);
+ }
+
+ /**
+ *
+ */
+ public int[] rowPivot() {
+ return rowPivot;
+ }
+
+ /**
+ *
+ */
+ public int[] columnPivot() {
+ return colPivot;
+ }
+
+ /**
+ *
+ */
+ public int[] rowUnpivot() {
+ return rowUnpivot;
+ }
+
+ /**
+ *
+ */
+ public int[] columnUnpivot() {
+ return colUnpivot;
+ }
+
+ /**
+ * @param sto Matrix storage.
+ * @param pivot Pivot array.
+ */
+ public PivotedMatrixStorage(MatrixStorage sto, int[] pivot) {
+ this(sto, pivot, pivot == null ? null : java.util.Arrays.copyOf(pivot, pivot.length));
+ }
+
+ /**
+ * @param sto Matrix storage.
+ */
+ public PivotedMatrixStorage(MatrixStorage sto) {
+ this(sto, sto == null ? null : identityPivot(sto.rowSize()), sto == null ? null : identityPivot(sto.columnSize()));
+ }
+
+ /**
+ * @param i First row index to swap.
+ * @param j Second row index to swap.
+ */
+ public void swapRows(int i, int j) {
+ if (i != j) {
+ int tmp = rowPivot[i];
+
+ rowPivot[i] = rowPivot[j];
+ rowPivot[j] = tmp;
+
+ rowUnpivot[rowPivot[i]] = i;
+ rowUnpivot[rowPivot[j]] = j;
+ }
+ }
+
+ /**
+ * @param i First column index to swap.
+ * @param j Second column index to swap.
+ */
+ public void swapColumns(int i, int j) {
+ if (i != j) {
+ int tmp = colPivot[i];
+
+ colPivot[i] = colPivot[j];
+ colPivot[j] = tmp;
+
+ colUnpivot[colPivot[i]] = i;
+ colUnpivot[colPivot[j]] = j;
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int x, int y) {
+ return sto.get(rowPivot[x], colPivot[y]);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int x, int y, double v) {
+ sto.set(rowPivot[x], colPivot[y], v);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int columnSize() {
+ return sto.columnSize();
+ }
+
+ /** {@inheritDoc} */
+ @Override public int rowSize() {
+ return sto.rowSize();
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(sto);
+ out.writeObject(rowPivot);
+ out.writeObject(colPivot);
+ out.writeObject(rowUnpivot);
+ out.writeObject(colUnpivot);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ sto = (MatrixStorage)in.readObject();
+ rowPivot = (int[])in.readObject();
+ colPivot = (int[])in.readObject();
+ rowUnpivot = (int[])in.readObject();
+ colUnpivot = (int[])in.readObject();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return sto.isSequentialAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return sto.isDense();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return sto.isRandomAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return sto.isDistributed();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + sto.hashCode();
+ res = res * 37 + Arrays.hashCode(rowPivot);
+ res = res * 37 + Arrays.hashCode(rowUnpivot);
+ res = res * 37 + Arrays.hashCode(colPivot);
+ res = res * 37 + Arrays.hashCode(colUnpivot);
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+
+ if (obj == null || getClass() != obj.getClass())
+ return false;
+
+ PivotedMatrixStorage that = (PivotedMatrixStorage)obj;
+
+ return Arrays.equals(rowPivot, that.rowPivot) && Arrays.equals(rowUnpivot, that.rowUnpivot)
+ && Arrays.equals(colPivot, that.colPivot) && Arrays.equals(colUnpivot, that.colUnpivot)
+ && (sto != null ? sto.equals(that.sto) : that.sto == null);
+ }
+
+ /**
+ * @param n Pivot array length.
+ */
+ private static int[] identityPivot(int n) {
+ int[] pivot = new int[n];
+
+ for (int i = 0; i < n; i++)
+ pivot[i] = i;
+
+ return pivot;
+ }
+
+ /**
+ * @param pivot Pivot array to be inverted.
+ */
+ private static int[] invert(int[] pivot) {
+ int[] x = new int[pivot.length];
+
+ for (int i = 0; i < pivot.length; i++)
+ x[pivot[i]] = i;
+
+ return x;
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/RandomMatrixStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/RandomMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/RandomMatrixStorage.java
new file mode 100644
index 0000000..8283201
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/RandomMatrixStorage.java
@@ -0,0 +1,176 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.matrix;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.nio.ByteBuffer;
+import org.apache.ignite.math.MatrixStorage;
+import org.apache.ignite.math.MurmurHash;
+import org.apache.ignite.math.exceptions.UnsupportedOperationException;
+
+/**
+ * {@link MatrixStorage} implementation with random values in the matrix elements.
+ */
+public class RandomMatrixStorage implements MatrixStorage {
+ /** */
+ private static final int PRIME1 = 104047;
+ /** */
+ private static final int PRIME2 = 101377;
+ /** */
+ private static final int PRIME3 = 64661;
+ /** */
+ private static final long SCALE = 1L << 32;
+
+ /** Random generation seed. */
+ private int seed;
+
+ /** Amount of rows in the matrix. */
+ private int rows;
+ /** Amount of columns in the matrix. */
+ private int cols;
+
+ /** Whether fast hash is used, in {@link #get(int, int)}. */
+ private boolean fastHash;
+
+ /**
+ * For externalization.
+ */
+ public RandomMatrixStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param rows Amount of rows in the matrix.
+ * @param cols Amount of columns in the matrix.
+ * @param fastHash Whether fast hash is used.
+ */
+ public RandomMatrixStorage(int rows, int cols, boolean fastHash) {
+ assert rows > 0;
+ assert cols > 0;
+
+ this.rows = rows;
+ this.cols = cols;
+ this.fastHash = fastHash;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int x, int y) {
+ if (!fastHash) {
+ ByteBuffer buf = ByteBuffer.allocate(8);
+
+ buf.putInt(x);
+ buf.putInt(y);
+ buf.flip();
+
+ return (MurmurHash.hash64A(buf, seed) & (SCALE - 1)) / (double)SCALE;
+ }
+ else
+ // This isn't a fantastic random number generator, but it is just fine for random projections.
+ return ((((x * PRIME1) + y * PRIME2 + x * y * PRIME3) & 8) * 0.25) - 1;
+ }
+
+ /**
+ *
+ */
+ public boolean isFastHash() {
+ return fastHash;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int x, int y, double v) {
+ throw new UnsupportedOperationException("Random matrix storage is a read-only storage.");
+ }
+
+ /** {@inheritDoc} */
+ @Override public int columnSize() {
+ return cols;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int rowSize() {
+ return rows;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(rows);
+ out.writeInt(cols);
+ out.writeInt(seed);
+ out.writeBoolean(fastHash);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ rows = in.readInt();
+ cols = in.readInt();
+ seed = in.readInt();
+ fastHash = in.readBoolean();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + Boolean.hashCode(fastHash);
+ res = res * 37 + seed;
+ res = res * 37 + cols;
+ res = res * 37 + rows;
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ RandomMatrixStorage that = (RandomMatrixStorage)o;
+
+ return rows == that.rows && cols == that.cols && seed == that.seed && fastHash == that.fastHash;
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseDistributedMatrixStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseDistributedMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseDistributedMatrixStorage.java
new file mode 100644
index 0000000..82807c5
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseDistributedMatrixStorage.java
@@ -0,0 +1,281 @@
+// @java.file.header
+
+/* _________ _____ __________________ _____
+ * __ ____/___________(_)______ /__ ____/______ ____(_)_______
+ * _ / __ __ ___/__ / _ __ / _ / __ _ __ `/__ / __ __ \
+ * / /_/ / _ / _ / / /_/ / / /_/ / / /_/ / _ / _ / / /
+ * \____/ /_/ /_/ \_,__/ \____/ \__,_/ /_/ /_/ /_/
+ */
+
+package org.apache.ignite.math.impls.storage.matrix;
+
+import it.unimi.dsi.fastutil.ints.Int2DoubleOpenHashMap;
+import it.unimi.dsi.fastutil.ints.Int2DoubleRBTreeMap;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.util.Map;
+import org.apache.ignite.IgniteCache;
+import org.apache.ignite.Ignition;
+import org.apache.ignite.cache.CacheAtomicityMode;
+import org.apache.ignite.cache.CacheMode;
+import org.apache.ignite.cache.CachePeekMode;
+import org.apache.ignite.cache.CacheWriteSynchronizationMode;
+import org.apache.ignite.configuration.CacheConfiguration;
+import org.apache.ignite.lang.IgniteUuid;
+import org.apache.ignite.math.MatrixStorage;
+import org.apache.ignite.math.StorageConstants;
+import org.apache.ignite.math.impls.CacheUtils;
+
+/**
+ * {@link MatrixStorage} implementation for {@link org.apache.ignite.math.impls.matrix.SparseDistributedMatrix}.
+ */
+public class SparseDistributedMatrixStorage extends CacheUtils implements MatrixStorage, StorageConstants {
+ /** Amount of rows in the matrix. */
+ private int rows;
+ /** Amount of columns in the matrix. */
+ private int cols;
+
+ /** Row or column based storage mode. */
+ private int stoMode;
+ /** Random or sequential access mode. */
+ private int acsMode;
+
+ /** Actual distributed storage. */
+ private IgniteCache<
+ Integer /* Row or column index. */,
+ Map<Integer, Double> /* Map-based row or column. */
+ > cache = null;
+
+ /**
+ *
+ */
+ public SparseDistributedMatrixStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param rows Amount of rows in the matrix.
+ * @param cols Amount of columns in the matrix.
+ * @param stoMode Row or column based storage mode.
+ * @param acsMode Random or sequential access mode.
+ */
+ public SparseDistributedMatrixStorage(int rows, int cols, int stoMode, int acsMode) {
+ assert rows > 0;
+ assert cols > 0;
+ assertAccessMode(acsMode);
+ assertStorageMode(stoMode);
+
+ this.rows = rows;
+ this.cols = cols;
+ this.stoMode = stoMode;
+ this.acsMode = acsMode;
+
+ cache = newCache();
+ }
+
+ /**
+ *
+ *
+ */
+ private IgniteCache<Integer, Map<Integer, Double>> newCache() {
+ CacheConfiguration<Integer, Map<Integer, Double>> cfg = new CacheConfiguration<>();
+
+ // Assume 10% density.
+ cfg.setStartSize(Math.max(1024, (rows * cols) / 10));
+
+ // Write to primary.
+ cfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.PRIMARY_SYNC);
+
+ // Atomic transactions only.
+ cfg.setAtomicityMode(CacheAtomicityMode.ATOMIC);
+
+ // No eviction.
+ cfg.setEvictionPolicy(null);
+
+ // No copying of values.
+ cfg.setCopyOnRead(false);
+
+ // Cache is partitioned.
+ cfg.setCacheMode(CacheMode.PARTITIONED);
+
+ // Random cache name.
+ cfg.setName(new IgniteUuid().shortString());
+
+ return Ignition.localIgnite().getOrCreateCache(cfg);
+ }
+
+ /**
+ *
+ *
+ */
+ public IgniteCache<Integer, Map<Integer, Double>> cache() {
+ return cache;
+ }
+
+ /**
+ *
+ *
+ */
+ public int accessMode() {
+ return acsMode;
+ }
+
+ /**
+ *
+ *
+ */
+ public int storageMode() {
+ return stoMode;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int x, int y) {
+ if (stoMode == ROW_STORAGE_MODE)
+ return matrixGet(cache.getName(), x, y);
+ else
+ return matrixGet(cache.getName(), y, x);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int x, int y, double v) {
+ if (stoMode == ROW_STORAGE_MODE)
+ matrixSet(cache.getName(), x, y, v);
+ else
+ matrixSet(cache.getName(), y, x, v);
+ }
+
+ /**
+ * Distributed matrix get.
+ *
+ * @param cacheName Matrix's cache.
+ * @param a Row or column index.
+ * @param b Row or column index.
+ * @return Matrix value at (a, b) index.
+ */
+ private double matrixGet(String cacheName, int a, int b) {
+ // Remote get from the primary node (where given row or column is stored locally).
+ return ignite().compute(groupForKey(cacheName, a)).call(() -> {
+ IgniteCache<Integer, Map<Integer, Double>> cache = Ignition.localIgnite().getOrCreateCache(cacheName);
+
+ // Local get.
+ Map<Integer, Double> map = cache.localPeek(a, CachePeekMode.PRIMARY);
+
+ return (map == null || !map.containsKey(b)) ? 0.0 : map.get(b);
+ });
+ }
+
+ /**
+ * Distributed matrix set.
+ *
+ * @param cacheName Matrix's cache.
+ * @param a Row or column index.
+ * @param b Row or column index.
+ * @param v New value to set.
+ */
+ private void matrixSet(String cacheName, int a, int b, double v) {
+ // Remote set on the primary node (where given row or column is stored locally).
+ ignite().compute(groupForKey(cacheName, a)).run(() -> {
+ IgniteCache<Integer, Map<Integer, Double>> cache = Ignition.localIgnite().getOrCreateCache(cacheName);
+
+ // Local get.
+ Map<Integer, Double> map = cache.localPeek(a, CachePeekMode.PRIMARY);
+
+ if (map == null)
+ map = acsMode == SEQUENTIAL_ACCESS_MODE ? new Int2DoubleRBTreeMap() : new Int2DoubleOpenHashMap();
+
+ if (v != 0.0)
+ map.put(b, v);
+ else if (map.containsKey(b))
+ map.remove(b);
+
+ // Local put.
+ cache.put(a, map);
+ });
+ }
+
+ /** {@inheritDoc} */
+ @Override public int columnSize() {
+ return cols;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int rowSize() {
+ return rows;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(rows);
+ out.writeInt(cols);
+ out.writeInt(acsMode);
+ out.writeInt(stoMode);
+ out.writeUTF(cache.getName());
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ rows = in.readInt();
+ cols = in.readInt();
+ acsMode = in.readInt();
+ stoMode = in.readInt();
+ cache = ignite().getOrCreateCache(in.readUTF());
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return acsMode == SEQUENTIAL_ACCESS_MODE;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return acsMode == RANDOM_ACCESS_MODE;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** Destroy underlying cache. */
+ @Override public void destroy() {
+ cache.destroy();
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + cols;
+ res = res * 37 + rows;
+ res = res * 37 + acsMode;
+ res = res * 37 + stoMode;
+ res = res * 37 + cache.hashCode();
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+
+ if (obj == null || getClass() != obj.getClass())
+ return false;
+
+ SparseDistributedMatrixStorage that = (SparseDistributedMatrixStorage)obj;
+
+ return rows == that.rows && cols == that.cols && acsMode == that.acsMode && stoMode == that.stoMode
+ && (cache != null ? cache.equals(that.cache) : that.cache == null);
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseLocalOnHeapMatrixStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseLocalOnHeapMatrixStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseLocalOnHeapMatrixStorage.java
new file mode 100644
index 0000000..e72da70
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/SparseLocalOnHeapMatrixStorage.java
@@ -0,0 +1,226 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.matrix;
+
+import it.unimi.dsi.fastutil.ints.Int2DoubleOpenHashMap;
+import it.unimi.dsi.fastutil.ints.Int2DoubleRBTreeMap;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.util.HashMap;
+import java.util.Map;
+import org.apache.ignite.math.MatrixStorage;
+import org.apache.ignite.math.StorageConstants;
+
+/**
+ * Storage for sparse, local, on-heap matrix.
+ */
+public class SparseLocalOnHeapMatrixStorage implements MatrixStorage, StorageConstants {
+ /** Default zero value. */
+ private static final double DEFAULT_VALUE = 0.0;
+
+ /** */ private int rows;
+ /** */ private int cols;
+
+ /** */ private int acsMode;
+ /** */ private int stoMode;
+
+ /** Actual map storage. */
+ private Map<Integer, Map<Integer, Double>> sto;
+
+ /** */
+ public SparseLocalOnHeapMatrixStorage() {
+ // No-op.
+ }
+
+ /** */
+ public SparseLocalOnHeapMatrixStorage(int rows, int cols, int acsMode, int stoMode) {
+ assert rows > 0;
+ assert cols > 0;
+ assertAccessMode(acsMode);
+ assertStorageMode(stoMode);
+
+ this.rows = rows;
+ this.cols = cols;
+ this.acsMode = acsMode;
+ this.stoMode = stoMode;
+
+ sto = new HashMap<>();
+ }
+
+ /**
+ *
+ *
+ */
+ public int getStorageMode() {
+ return stoMode;
+ }
+
+ /**
+ *
+ *
+ */
+ public int getAccessMode() {
+ return acsMode;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int x, int y) {
+ if (stoMode == ROW_STORAGE_MODE) {
+ Map<Integer, Double> row = sto.get(x);
+
+ if (row != null) {
+ Double val = row.get(y);
+
+ if (val != null)
+ return val;
+ }
+
+ return DEFAULT_VALUE;
+ }
+ else {
+ Map<Integer, Double> col = sto.get(y);
+
+ if (col != null) {
+ Double val = col.get(x);
+
+ if (val != null)
+ return val;
+ }
+
+ return DEFAULT_VALUE;
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int x, int y, double v) {
+ // Ignore default values (currently 0.0).
+ if (v != DEFAULT_VALUE) {
+ if (stoMode == ROW_STORAGE_MODE) {
+ Map<Integer, Double> row = sto.computeIfAbsent(x, k ->
+ acsMode == SEQUENTIAL_ACCESS_MODE ? new Int2DoubleRBTreeMap() : new Int2DoubleOpenHashMap());
+
+ row.put(y, v);
+ }
+ else {
+ Map<Integer, Double> col = sto.computeIfAbsent(y, k ->
+ acsMode == SEQUENTIAL_ACCESS_MODE ? new Int2DoubleRBTreeMap() : new Int2DoubleOpenHashMap());
+
+ col.put(x, v);
+ }
+ }
+ else {
+ if (stoMode == ROW_STORAGE_MODE) {
+ if (sto.containsKey(x)) {
+ Map<Integer, Double> row = sto.get(x);
+
+ if (row.containsKey(y))
+ row.remove(y);
+ }
+
+ }
+ else {
+ if (sto.containsKey(y)) {
+ Map<Integer, Double> col = sto.get(y);
+
+ if (col.containsKey(x))
+ col.remove(x);
+ }
+ }
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public int columnSize() {
+ return cols;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int rowSize() {
+ return rows;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(rows);
+ out.writeInt(cols);
+ out.writeInt(acsMode);
+ out.writeInt(stoMode);
+ out.writeObject(sto);
+ }
+
+ /** {@inheritDoc} */
+ @SuppressWarnings({"unchecked"})
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ rows = in.readInt();
+ cols = in.readInt();
+ acsMode = in.readInt();
+ stoMode = in.readInt();
+ sto = (Map<Integer, Map<Integer, Double>>)in.readObject();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return acsMode == SEQUENTIAL_ACCESS_MODE;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return acsMode == RANDOM_ACCESS_MODE;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + rows;
+ res = res * 37 + cols;
+ res = res * 37 + sto.hashCode();
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ SparseLocalOnHeapMatrixStorage that = (SparseLocalOnHeapMatrixStorage)o;
+
+ return rows == that.rows && cols == that.cols && acsMode == that.acsMode && stoMode == that.stoMode
+ && (sto != null ? sto.equals(that.sto) : that.sto == null);
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/package-info.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/package-info.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/package-info.java
new file mode 100644
index 0000000..aba47db
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/matrix/package-info.java
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * <!-- Package description. -->
+ * Contains specific implementations for matrix storage models.
+ */
+package org.apache.ignite.math.impls.storage.matrix;
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ArrayVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ArrayVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ArrayVectorStorage.java
new file mode 100644
index 0000000..ef59c62
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ArrayVectorStorage.java
@@ -0,0 +1,135 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.util.Arrays;
+import org.apache.ignite.math.VectorStorage;
+
+/**
+ * Array based {@link VectorStorage} implementation.
+ */
+public class ArrayVectorStorage implements VectorStorage {
+ /** Backing data array. */
+ private double[] data;
+
+ /**
+ * IMPL NOTE required by {@link Externalizable}.
+ */
+ public ArrayVectorStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param size Vector size.
+ */
+ public ArrayVectorStorage(int size) {
+ assert size > 0;
+
+ data = new double[size];
+ }
+
+ /**
+ * @param data Backing data array.
+ */
+ public ArrayVectorStorage(double[] data) {
+ assert data != null;
+
+ this.data = data;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return data == null ? 0 : data.length;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return data[i];
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ data[i] = v;
+ }
+
+ /** {@inheritDoc}} */
+ @Override public boolean isArrayBased() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double[] data() {
+ return data;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(data);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ data = (double[])in.readObject();
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + Arrays.hashCode(data);
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+
+ if (obj == null || getClass() != obj.getClass())
+ return false;
+
+ ArrayVectorStorage that = (ArrayVectorStorage)obj;
+
+ return Arrays.equals(data, (that.data));
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/CacheVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/CacheVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/CacheVectorStorage.java
new file mode 100644
index 0000000..670deef
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/CacheVectorStorage.java
@@ -0,0 +1,175 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.IgniteCache;
+import org.apache.ignite.Ignition;
+import org.apache.ignite.math.ValueMapper;
+import org.apache.ignite.math.VectorKeyMapper;
+import org.apache.ignite.math.VectorStorage;
+
+/**
+ * Vector storage based on existing cache and index and value mapping functions.
+ */
+public class CacheVectorStorage<K, V> implements VectorStorage {
+ /** Storage size. */
+ private int size;
+ /** Key mapper. */
+ private VectorKeyMapper<K> keyMapper;
+ /** Value mapper. */
+ private ValueMapper<V> valMapper;
+ /** Underlying ignite cache. */
+ private IgniteCache<K, V> cache;
+
+ /**
+ *
+ */
+ public CacheVectorStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param size
+ * @param cache
+ * @param keyMapper
+ * @param valMapper
+ */
+ public CacheVectorStorage(int size, IgniteCache<K, V> cache, VectorKeyMapper<K> keyMapper,
+ ValueMapper<V> valMapper) {
+ assert size > 0;
+ assert cache != null;
+ assert keyMapper != null;
+ assert valMapper != null;
+
+ this.size = size;
+ this.cache = cache;
+ this.keyMapper = keyMapper;
+ this.valMapper = valMapper;
+ }
+
+ /**
+ *
+ *
+ */
+ public IgniteCache<K, V> cache() {
+ return cache;
+ }
+
+ /**
+ *
+ *
+ */
+ public VectorKeyMapper<K> keyMapper() {
+ return keyMapper;
+ }
+
+ /**
+ *
+ *
+ */
+ public ValueMapper<V> valueMapper() {
+ return valMapper;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return size;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return valMapper.toDouble(cache.get(keyMapper.apply(i)));
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ cache.put(keyMapper.apply(i), valMapper.fromDouble(v));
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(size);
+ out.writeObject(keyMapper);
+ out.writeObject(valMapper);
+ out.writeUTF(cache.getName());
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ size = in.readInt();
+ keyMapper = (VectorKeyMapper<K>)in.readObject();
+ valMapper = (ValueMapper<V>)in.readObject();
+ cache = Ignition.localIgnite().getOrCreateCache(in.readUTF());
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + size();
+ res = res * 37 + keyMapper.hashCode();
+ res = res * 37 + valMapper.hashCode();
+ res = res * 37 + cache.hashCode();
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object obj) {
+ if (this == obj)
+ return true;
+
+ if (obj == null || getClass() != obj.getClass())
+ return false;
+
+ CacheVectorStorage that = (CacheVectorStorage)obj;
+
+ return size == that.size
+ && (keyMapper != null ? keyMapper.getClass().equals(that.keyMapper.getClass()) : that.keyMapper == null)
+ && (valMapper != null ? valMapper.getClass().equals(that.valMapper.getClass()) : that.valMapper == null)
+ && (cache != null ? cache.equals(that.cache) : that.cache == null);
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ConstantVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ConstantVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ConstantVectorStorage.java
new file mode 100644
index 0000000..ff5ab26
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/ConstantVectorStorage.java
@@ -0,0 +1,133 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.math.VectorStorage;
+import org.apache.ignite.math.exceptions.UnsupportedOperationException;
+
+/**
+ * Constant read-only vector storage.
+ */
+public class ConstantVectorStorage implements VectorStorage {
+ /** */ private int size;
+ /** */ private double val;
+
+ /**
+ *
+ */
+ public ConstantVectorStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param size Vector size.
+ * @param val Value to set for vector elements.
+ */
+ public ConstantVectorStorage(int size, double val) {
+ assert size > 0;
+
+ this.size = size;
+ this.val = val;
+ }
+
+ /**
+ *
+ *
+ */
+ public double constant() {
+ return val;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return size;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return val;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ throw new UnsupportedOperationException("Can't set value into constant vector.");
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(size);
+ out.writeDouble(val);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ size = in.readInt();
+ val = in.readDouble();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + size;
+ res = res * 37 + Double.hashCode(val);
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ ConstantVectorStorage that = (ConstantVectorStorage)o;
+
+ return size == that.size && val == that.val;
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DelegateVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DelegateVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DelegateVectorStorage.java
new file mode 100644
index 0000000..aa6018c
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DelegateVectorStorage.java
@@ -0,0 +1,157 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.math.VectorStorage;
+
+/**
+ * {@link VectorStorage} implementation that delegates to parent matrix.
+ */
+public class DelegateVectorStorage implements VectorStorage {
+ /** Parent vector storage. */
+ private VectorStorage sto;
+
+ /** Offset in the parent vector. */
+ private int off;
+
+ /** Size of the vector. */
+ private int len;
+
+ /**
+ *
+ */
+ public DelegateVectorStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param sto Vector storage to delegate to.
+ * @param off Offset in the parent vector.
+ * @param len Size of the vector.
+ */
+ public DelegateVectorStorage(VectorStorage sto, int off, int len) {
+ assert sto != null;
+ assert off >= 0;
+ assert len > 0;
+
+ this.sto = sto;
+ this.off = off;
+ this.len = len;
+ }
+
+ /** */
+ public VectorStorage delegate() {
+ return sto;
+ }
+
+ /** */
+ public int offset() {
+ return off;
+ }
+
+ /** */
+ public int length() {
+ return len;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return len;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return sto.get(off + i);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ sto.set(off + i, v);
+ }
+
+ /** {@inheritDoc} */
+ @Override public double[] data() {
+ return sto.data();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return sto.isSequentialAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return sto.isDense();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return sto.isRandomAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return sto.isDistributed();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return sto.isArrayBased();
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(sto);
+ out.writeInt(off);
+ out.writeInt(len);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ sto = (VectorStorage)in.readObject();
+ off = in.readInt();
+ len = in.readInt();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ DelegateVectorStorage that = (DelegateVectorStorage)o;
+
+ return len == that.len && off == that.off && (sto != null ? sto.equals(that.sto) : that.sto == null);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + off;
+ res = res * 37 + len;
+ res = res * 37 + sto.hashCode();
+
+ return res;
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DenseLocalOffHeapVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DenseLocalOffHeapVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DenseLocalOffHeapVectorStorage.java
new file mode 100644
index 0000000..2e7cdc9
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/DenseLocalOffHeapVectorStorage.java
@@ -0,0 +1,172 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.util.stream.IntStream;
+import org.apache.ignite.internal.util.GridUnsafe;
+import org.apache.ignite.math.VectorStorage;
+
+/**
+ * Local, dense off-heap vector storage.
+ */
+public class DenseLocalOffHeapVectorStorage implements VectorStorage {
+ /** Vector size. */
+ private int size;
+
+ /** */
+ private transient long ptr;
+ //TODO: temp solution.
+ /** */
+ private int ptrInitHash;
+
+ /**
+ *
+ */
+ public DenseLocalOffHeapVectorStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param size Vector size.
+ */
+ public DenseLocalOffHeapVectorStorage(int size) {
+ assert size > 0;
+
+ this.size = size;
+
+ allocateMemory(size);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return size;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return GridUnsafe.getDouble(pointerOffset(i));
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ GridUnsafe.putDouble(pointerOffset(i), v);
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double[] data() {
+ return null;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return true;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeInt(size);
+ out.writeInt(ptrInitHash);
+
+ for (int i = 0; i < size; i++)
+ out.writeDouble(get(i));
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ size = in.readInt();
+
+ allocateMemory(size);
+
+ ptrInitHash = in.readInt();
+
+ for (int i = 0; i < size; i++)
+ set(i, in.readDouble());
+ }
+
+ /** {@inheritDoc} */
+ @Override public void destroy() {
+ GridUnsafe.freeMemory(ptr);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = 1;
+
+ res = res * 37 + size;
+ res = res * 37 + ptrInitHash;
+
+ return res;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ DenseLocalOffHeapVectorStorage that = (DenseLocalOffHeapVectorStorage)o;
+
+ return size == that.size && isMemoryEquals(that);
+ }
+
+ /** */
+ private boolean isMemoryEquals(DenseLocalOffHeapVectorStorage otherStorage) {
+ return IntStream.range(0, size).parallel().noneMatch(idx -> Double.compare(get(idx), otherStorage.get(idx)) != 0);
+ }
+
+ /**
+ * Pointer offset for specific index.
+ *
+ * @param i Offset index.
+ */
+ private long pointerOffset(int i) {
+ return ptr + i * Double.BYTES;
+ }
+
+ /** */
+ private void allocateMemory(int size) {
+ ptr = GridUnsafe.allocateMemory(size * Double.BYTES);
+
+ ptrInitHash = Long.hashCode(ptr);
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/FunctionVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/FunctionVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/FunctionVectorStorage.java
new file mode 100644
index 0000000..df8fa12
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/FunctionVectorStorage.java
@@ -0,0 +1,141 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.math.VectorStorage;
+import org.apache.ignite.math.exceptions.UnsupportedOperationException;
+import org.apache.ignite.math.functions.IgniteFunction;
+import org.apache.ignite.math.functions.IntDoubleToVoidFunction;
+
+/**
+ * Read-only or read-write function-based vector storage.
+ */
+public class FunctionVectorStorage implements VectorStorage {
+ /** */ private IgniteFunction<Integer, Double> getFunc;
+ /** */ private IntDoubleToVoidFunction setFunc;
+ /** */ private int size;
+
+ /**
+ *
+ */
+ public FunctionVectorStorage() {
+ // No-op.
+ }
+
+ /**
+ * Creates read-only or read-write storage.
+ *
+ * @param size Cardinality of this vector storage.
+ * @param getFunc Get function.
+ * @param setFunc Optional set function ({@code null} for read-only storage).
+ */
+ public FunctionVectorStorage(int size, IgniteFunction<Integer, Double> getFunc, IntDoubleToVoidFunction setFunc) {
+ assert size > 0;
+ assert getFunc != null; // At least get function is required.
+
+ this.size = size;
+ this.getFunc = getFunc;
+ this.setFunc = setFunc;
+ }
+
+ /**
+ *
+ *
+ */
+ public IgniteFunction<Integer, Double> getFunction() {
+ return getFunc;
+ }
+
+ /**
+ *
+ *
+ */
+ public IntDoubleToVoidFunction setFunction() {
+ return setFunc;
+ }
+
+ /**
+ * Creates read-only storage.
+ *
+ * @param size Cardinality of this vector storage.
+ * @param getFunc Get function.
+ */
+ public FunctionVectorStorage(int size, IgniteFunction<Integer, Double> getFunc) {
+ this(size, getFunc, null);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return size;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return getFunc.apply(i);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ if (setFunc != null)
+ setFunc.accept(i, v);
+ else
+ throw new UnsupportedOperationException("Cannot set into read-only vector.");
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(setFunc);
+ out.writeObject(getFunc);
+ out.writeInt(size);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ setFunc = (IntDoubleToVoidFunction)in.readObject();
+ getFunc = (IgniteFunction<Integer, Double>)in.readObject();
+ size = in.readInt();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/MatrixVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/MatrixVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/MatrixVectorStorage.java
new file mode 100644
index 0000000..ece0003
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/MatrixVectorStorage.java
@@ -0,0 +1,185 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import org.apache.ignite.math.Matrix;
+import org.apache.ignite.math.VectorStorage;
+import org.apache.ignite.math.exceptions.IndexException;
+
+/**
+ * Row, column or diagonal vector-based view of the matrix
+ */
+public class MatrixVectorStorage implements VectorStorage {
+ /** */ private Matrix parent;
+
+ /** */ private int row;
+ /** */ private int col;
+
+ /** */ private int rowStride;
+ /** */ private int colStride;
+
+ /** */ private int size;
+
+ /**
+ *
+ */
+ public MatrixVectorStorage() {
+ // No-op.
+ }
+
+ /**
+ * @param parent
+ * @param row
+ * @param col
+ * @param rowStride
+ * @param colStride
+ */
+ public MatrixVectorStorage(Matrix parent, int row, int col, int rowStride, int colStride) {
+ assert parent != null;
+ assert rowStride >= 0;
+ assert colStride >= 0;
+ assert rowStride > 0 || colStride > 0;
+
+ if (row < 0 || row >= parent.rowSize())
+ throw new IndexException(row);
+ if (col < 0 || col >= parent.columnSize())
+ throw new IndexException(col);
+
+ this.parent = parent;
+
+ this.row = row;
+ this.col = col;
+
+ this.rowStride = rowStride;
+ this.colStride = colStride;
+
+ this.size = getSize();
+ }
+
+ /**
+ *
+ *
+ */
+ int row() {
+ return row;
+ }
+
+ /**
+ *
+ *
+ */
+ int column() {
+ return col;
+ }
+
+ /**
+ *
+ *
+ */
+ int rowStride() {
+ return rowStride;
+ }
+
+ /**
+ *
+ *
+ */
+ int columnStride() {
+ return colStride;
+ }
+
+ /**
+ *
+ *
+ */
+ private int getSize() {
+ if (rowStride != 0 && colStride != 0) {
+ int n1 = (parent.rowSize() - row) / rowStride;
+ int n2 = (parent.columnSize() - col) / colStride;
+
+ return Math.min(n1, n2);
+ }
+ else if (rowStride > 0)
+ return (parent.rowSize() - row) / rowStride;
+ else
+ return (parent.columnSize() - col) / colStride;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return size;
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return parent.get(row + i * rowStride, col + i * colStride);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ parent.set(row + i * rowStride, col + i * colStride, v);
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return parent.isSequentialAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return parent.isDense();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return parent.isRandomAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return parent.isDistributed();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return false;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(parent);
+ out.writeInt(row);
+ out.writeInt(col);
+ out.writeInt(rowStride);
+ out.writeInt(colStride);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ parent = (Matrix)in.readObject();
+ row = in.readInt();
+ col = in.readInt();
+ rowStride = in.readInt();
+ colStride = in.readInt();
+
+ size = getSize();
+ }
+}
http://git-wip-us.apache.org/repos/asf/ignite/blob/732dfea9/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/PivotedVectorStorage.java
----------------------------------------------------------------------
diff --git a/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/PivotedVectorStorage.java b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/PivotedVectorStorage.java
new file mode 100644
index 0000000..f69e959
--- /dev/null
+++ b/modules/ml/src/main/java/org/apache/ignite/math/impls/storage/vector/PivotedVectorStorage.java
@@ -0,0 +1,175 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.math.impls.storage.vector;
+
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.util.Arrays;
+import org.apache.ignite.math.VectorStorage;
+
+/**
+ * Pivoted (index mapped) view over another vector storage implementation.
+ */
+public class PivotedVectorStorage implements VectorStorage {
+ /** */ private VectorStorage sto;
+
+ /** */ private int[] pivot;
+ /** */ private int[] unpivot;
+
+ /**
+ * @param pivot Pivot array.
+ */
+ private static int[] reverse(int[] pivot) {
+ int[] res = new int[pivot.length];
+
+ for (int i = 0; i < pivot.length; i++)
+ res[pivot[i]] = i;
+
+ return res;
+ }
+
+ /**
+ *
+ *
+ */
+ public int[] pivot() {
+ return pivot;
+ }
+
+ /**
+ *
+ *
+ */
+ public int[] unpivot() {
+ return unpivot;
+ }
+
+ /**
+ * @param sto Backing vector storage.
+ * @param pivot Mapping from external index to internal.
+ * @param unpivot Mapping from internal index to external.
+ */
+ public PivotedVectorStorage(VectorStorage sto, int[] pivot, int[] unpivot) {
+ assert sto != null;
+ assert pivot != null;
+ assert unpivot != null;
+
+ this.sto = sto;
+ this.pivot = pivot;
+ this.unpivot = unpivot;
+ }
+
+ /**
+ * @param sto Backing vector storage.
+ * @param pivot Mapping from external index to internal.
+ */
+ public PivotedVectorStorage(VectorStorage sto, int[] pivot) {
+ this(sto, pivot, reverse(pivot));
+ }
+
+ /**
+ *
+ */
+ public PivotedVectorStorage() {
+ // No-op.
+ }
+
+ /** {@inheritDoc} */
+ @Override public int size() {
+ return sto.size();
+ }
+
+ /** {@inheritDoc} */
+ @Override public double get(int i) {
+ return sto.get(pivot[i]);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void set(int i, double v) {
+ sto.set(pivot[i], v);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeObject(sto);
+ out.writeObject(pivot);
+ out.writeObject(unpivot);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ sto = (VectorStorage)in.readObject();
+ pivot = (int[])in.readObject();
+ unpivot = (int[])in.readObject();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isSequentialAccess() {
+ return sto.isSequentialAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDense() {
+ return sto.isDense();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isRandomAccess() {
+ return sto.isRandomAccess();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isDistributed() {
+ return sto.isDistributed();
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean isArrayBased() {
+ return sto.isArrayBased();
+ }
+
+ /** {@inheritDoc} */
+ @Override public double[] data() {
+ return isArrayBased() ? sto.data() : null;
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object o) {
+ if (this == o)
+ return true;
+
+ if (o == null || getClass() != o.getClass())
+ return false;
+
+ PivotedVectorStorage that = (PivotedVectorStorage)o;
+
+ return (sto != null ? sto.equals(that.sto) : that.sto == null) && Arrays.equals(pivot, that.pivot)
+ && Arrays.equals(unpivot, that.unpivot);
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ int res = sto != null ? sto.hashCode() : 0;
+
+ res = 31 * res + Arrays.hashCode(pivot);
+ res = 31 * res + Arrays.hashCode(unpivot);
+
+ return res;
+ }
+}