svn commit: r1392944 [2/2] - in /opennlp/trunk/opennlp-maxent/src: main/java/opennlp/maxent/io/ main/java/opennlp/maxent/quasinewton/ main/java/opennlp/model/ test/java/opennlp/maxent/quasinewton/

[jo...@apache.org]

Added: opennlp/trunk/opennlp-maxent/src/test/java/opennlp/maxent/quasinewton/QuadraticFunction02.java
URL: http://svn.apache.org/viewvc/opennlp/trunk/opennlp-maxent/src/test/java/opennlp/maxent/quasinewton/QuadraticFunction02.java?rev=1392944&view=auto
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--- opennlp/trunk/opennlp-maxent/src/test/java/opennlp/maxent/quasinewton/QuadraticFunction02.java (added)
+++ opennlp/trunk/opennlp-maxent/src/test/java/opennlp/maxent/quasinewton/QuadraticFunction02.java Tue Oct  2 14:52:34 2012
@@ -0,0 +1,36 @@
+/*
+ * 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 opennlp.maxent.quasinewton;
+
+/**
+ * sample function for unit tests of LineSearch
+ */
+public class QuadraticFunction02 implements DifferentiableFunction {
+  public double valueAt(double[] x) {
+    // -x^2;
+    return Math.pow(x[0], 2) * -1;	
+  }
+
+  public double[] gradientAt(double[] x) {
+    // -2x
+    return new double[] {-2.0 * x[0]};
+  }
+
+  public int getDomainDimension() {
+    return 1;
+  }
+}
\ No newline at end of file

Propchange: opennlp/trunk/opennlp-maxent/src/test/java/opennlp/maxent/quasinewton/QuadraticFunction02.java
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