svn commit: r1063526 - /incubator/opennlp/trunk/opennlp-tools/src/test/java/opennlp/tools/chunker/ChunkerMETest.java

[co...@apache.org]

Author: colen
Date: Tue Jan 25 23:43:10 2011
New Revision: 1063526

URL: http://svn.apache.org/viewvc?rev=1063526&view=rev
Log:
OPENNLP-89 Created unit tests for ChunkerME

Added:
    incubator/opennlp/trunk/opennlp-tools/src/test/java/opennlp/tools/chunker/ChunkerMETest.java   (with props)

Added: incubator/opennlp/trunk/opennlp-tools/src/test/java/opennlp/tools/chunker/ChunkerMETest.java
URL: http://svn.apache.org/viewvc/incubator/opennlp/trunk/opennlp-tools/src/test/java/opennlp/tools/chunker/ChunkerMETest.java?rev=1063526&view=auto
==============================================================================
--- incubator/opennlp/trunk/opennlp-tools/src/test/java/opennlp/tools/chunker/ChunkerMETest.java (added)
+++ incubator/opennlp/trunk/opennlp-tools/src/test/java/opennlp/tools/chunker/ChunkerMETest.java Tue Jan 25 23:43:10 2011
@@ -0,0 +1,145 @@
+/*
+ * 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.tools.chunker;
+
+import static org.junit.Assert.*;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.Arrays;
+import java.util.List;
+
+import opennlp.tools.namefind.NameFinderME;
+import opennlp.tools.util.ObjectStream;
+import opennlp.tools.util.PlainTextByLineStream;
+import opennlp.tools.util.Sequence;
+import opennlp.tools.util.Span;
+
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * This is the test class for {@link NameFinderME}.
+ * <p>
+ * A proper testing and evaluation of the name finder is only possible with a
+ * large corpus which contains a huge amount of test sentences.
+ * <p>
+ * The scope of this test is to make sure that the name finder code can be
+ * executed. This test can not detect mistakes which lead to incorrect feature
+ * generation or other mistakes which decrease the tagging performance of the
+ * name finder.
+ * <p>
+ * In this test the {@link NameFinderME} is trained with a small amount of
+ * training sentences and then the computed model is used to predict sentences
+ * from the training sentences.
+ */
+public class ChunkerMETest {
+
+  private Chunker chunker;
+
+  String[] toks1 = { "Rockwell", "said", "the", "agreement", "calls", "for",
+      "it", "to", "supply", "200", "additional", "so-called", "shipsets",
+      "for", "the", "planes", "." };
+
+  String[] tags1 = { "NNP", "VBD", "DT", "NN", "VBZ", "IN", "PRP", "TO", "VB",
+      "CD", "JJ", "JJ", "NNS", "IN", "DT", "NNS", "." };
+
+  String[] expect1 = { "B-NP", "B-VP", "B-NP", "I-NP", "B-VP", "B-SBAR",
+      "B-NP", "B-VP", "I-VP", "B-NP", "I-NP", "I-NP", "I-NP", "B-PP", "B-NP",
+      "I-NP", "O" };
+
+  @Before
+  public void startup() throws IOException {
+    // train the chunker
+
+    InputStream in = getClass().getClassLoader().getResourceAsStream(
+        "opennlp/tools/chunker/test.txt");
+
+    String encoding = "UTF-8";
+
+    ObjectStream<ChunkSample> sampleStream = new ChunkSampleStream(
+        new PlainTextByLineStream(new InputStreamReader(in, encoding)));
+
+    ChunkerModel chunkerModel = ChunkerME.train("en", sampleStream, 1, 70);
+
+    this.chunker = new ChunkerME(chunkerModel);
+  }
+
+  @Test
+  public void testChunkAsArray() throws Exception {
+
+    String preds[] = chunker.chunk(toks1, tags1);
+
+    assertArrayEquals(expect1, preds);
+  }
+
+  @Test
+  public void testChunkAsSpan() throws Exception {
+
+    Span[] preds = chunker.chunkAsSpans(toks1, tags1);
+    System.out.println(Arrays.toString(preds));
+
+    assertEquals(10, preds.length);
+    assertEquals(new Span(0, 1, "NP"), preds[0]);
+    assertEquals(new Span(1, 2, "VP"), preds[1]);
+    assertEquals(new Span(2, 4, "NP"), preds[2]);
+    assertEquals(new Span(4, 5, "VP"), preds[3]);
+    assertEquals(new Span(5, 6, "SBAR"), preds[4]);
+    assertEquals(new Span(6, 7, "NP"), preds[5]);
+    assertEquals(new Span(7, 9, "VP"), preds[6]);
+    assertEquals(new Span(9, 13, "NP"), preds[7]);
+    assertEquals(new Span(13, 14, "PP"), preds[8]);
+    assertEquals(new Span(14, 16, "NP"), preds[9]);
+
+  }
+
+  @Test
+  public void testChunkAsList() throws Exception {
+
+    @SuppressWarnings("deprecation")
+    List<String> preds = chunker.chunk(Arrays.asList(toks1),
+        Arrays.asList(tags1));
+
+    assertEquals(Arrays.asList(expect1), preds);
+  }
+
+  @Test
+  public void testTokenProb() throws Exception {
+
+    Sequence[] preds = chunker.topKSequences(Arrays.asList(toks1),
+        Arrays.asList(tags1));
+
+    assertTrue(preds.length > 0);
+    assertEquals(expect1.length, preds[0].getProbs().length);
+    assertEquals(Arrays.asList(expect1), preds[0].getOutcomes());
+    assertNotSame(Arrays.asList(expect1), preds[1].getOutcomes());
+  }
+
+  @Test
+  public void testTokenProbArray() throws Exception {
+
+    Sequence[] preds = chunker.topKSequences(toks1, tags1, -5.55);
+
+    assertTrue(preds.length == 4);
+    assertEquals(expect1.length, preds[0].getProbs().length);
+    assertEquals(Arrays.asList(expect1), preds[0].getOutcomes());
+    assertNotSame(Arrays.asList(expect1), preds[1].getOutcomes());
+  }
+
+}

Propchange: incubator/opennlp/trunk/opennlp-tools/src/test/java/opennlp/tools/chunker/ChunkerMETest.java
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