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Subject: svn commit: r1582431 -
 /ctakes/trunk/ctakes-temporal/src/main/java/org/apache/ctakes/temporal/ae/feature/duration/DurationTimeUnitFeatureExtractor.java
Date: Thu, 27 Mar 2014 18:11:39 -0000
To: commits@ctakes.apache.org
From: dligach@apache.org
Message-Id: <20140327181139.C6E842388868@eris.apache.org>

Author: dligach
Date: Thu Mar 27 18:11:39 2014
New Revision: 1582431

URL: http://svn.apache.org/r1582431
Log:
Feature extractor for time unit duration only

Added:
    ctakes/trunk/ctakes-temporal/src/main/java/org/apache/ctakes/temporal/ae/feature/duration/DurationTimeUnitFeatureExtractor.java   (with props)

Added: ctakes/trunk/ctakes-temporal/src/main/java/org/apache/ctakes/temporal/ae/feature/duration/DurationTimeUnitFeatureExtractor.java
URL: http://svn.apache.org/viewvc/ctakes/trunk/ctakes-temporal/src/main/java/org/apache/ctakes/temporal/ae/feature/duration/DurationTimeUnitFeatureExtractor.java?rev=1582431&view=auto
==============================================================================
--- ctakes/trunk/ctakes-temporal/src/main/java/org/apache/ctakes/temporal/ae/feature/duration/DurationTimeUnitFeatureExtractor.java (added)
+++ ctakes/trunk/ctakes-temporal/src/main/java/org/apache/ctakes/temporal/ae/feature/duration/DurationTimeUnitFeatureExtractor.java Thu Mar 27 18:11:39 2014
@@ -0,0 +1,69 @@
+/**
+ * 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.ctakes.temporal.ae.feature.duration;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.ctakes.relationextractor.ae.features.RelationFeaturesExtractor;
+import org.apache.ctakes.typesystem.type.textsem.IdentifiedAnnotation;
+import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
+import org.apache.uima.jcas.JCas;
+import org.cleartk.classifier.Feature;
+import org.threeten.bp.temporal.TemporalUnit;
+
+import scala.collection.immutable.Set;
+
+/**
+ * Assumes all relations whose argument have no duration data have been deleted.
+ */
+public class DurationTimeUnitFeatureExtractor implements RelationFeaturesExtractor {
+
+  @Override
+  public List<Feature> extract(JCas jCas, IdentifiedAnnotation arg1, IdentifiedAnnotation arg2)
+      throws AnalysisEngineProcessException {
+    
+    List<Feature> features = new ArrayList<Feature>();
+    String timeText = arg2.getCoveredText().toLowerCase();  // arg2 is a time mention
+
+    Set<TemporalUnit> units = Utils.normalize(timeText);
+    if(units == null) {
+      features.add(new Feature("failed_normalization", true));
+      return features;
+    }
+    
+    scala.collection.Iterator<TemporalUnit> iterator = units.iterator();
+    while(iterator.hasNext()) {
+      TemporalUnit unit = iterator.next();
+      String coarseTimeUnit = Utils.makeCoarse(unit.getName());
+      
+      if(coarseTimeUnit == null) {
+        features.add(new Feature("failed_normalization", true));
+        return features;
+      }
+      
+      Map<String, Float> distribution = Utils.convertToDistribution(coarseTimeUnit);
+      float timeExpectedDuration = Utils.expectedDuration(distribution);
+      features.add(new Feature("time_duration", timeExpectedDuration));
+    } 
+
+    return features; 
+  }
+}

Propchange: ctakes/trunk/ctakes-temporal/src/main/java/org/apache/ctakes/temporal/ae/feature/duration/DurationTimeUnitFeatureExtractor.java
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