added support of entity aliases

[pnews.git] / war / src / main / java / pnews / NER.java

diff --git a/war/src/main/java/pnews/NER.java b/war/src/main/java/pnews/NER.java
index 2868239..5e7ce29 100644 (file)
--- a/war/src/main/java/pnews/NER.java
+++ b/war/src/main/java/pnews/NER.java
@@ -1,31 +1,51 @@
 package pnews;
 
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.List;
+import java.util.logging.Logger;
 
 import edu.stanford.nlp.ie.crf.CRFClassifier;
-import edu.stanford.nlp.ling.CoreAnnotations.AnswerAnnotation;
-import edu.stanford.nlp.ling.CoreLabel;
+import edu.stanford.nlp.util.CoreMap;
+import edu.stanford.nlp.util.Triple;
+import pnews.servlet.Config;
 
 /** https://stanfordnlp.github.io/CoreNLP/api.html */
 public class NER {
-        public static void classify(String str) throws ClassCastException, ClassNotFoundException, IOException {
-                CRFClassifier<CoreLabel> classifier;
-                List<List<CoreLabel>> out;
-                String cat, w;
+        private static final String CLASS_NAME = NER.class.getName();
+        private static final Logger LOG = Logger.getLogger(CLASS_NAME);
+        private static final CRFClassifier<CoreMap> classifier = CRFClassifier.getDefaultClassifier();
+        
+        public static List<String> classify(String str, List<String> entities, Config config) throws ClassCastException, ClassNotFoundException, IOException {
+                
+                List<Triple<String, Integer, Integer>> triples;
+                String w;
+                final String FUNCTION_NAME = "classify";                       
                 
-                classifier = CRFClassifier.getDefaultClassifier();
-                out = classifier.classify(str);
+                LOG.entering(CLASS_NAME, FUNCTION_NAME, str);
+
+                OpenNLP.classify(str, entities, config);
+                                
+                synchronized (classifier) {
+                        triples = classifier.classifyToCharacterOffsets(str);
+                }
+                 
+                for (Triple<String, Integer, Integer> t: triples) {
+                        w = str.substring(t.second, t.third);
+                        if (!config.isBlacklistedEntity(w) && !entities.contains(w))
+                                entities.add(config.getEntityAlias(w));
+                }
                 
-                for (List<CoreLabel> labels: out)
-                        for (CoreLabel l: labels) {
-                                cat = l.getString(AnswerAnnotation.class);
-                                w = l.word();
-                                System.out.println(cat + " " + w);
-                        }
+                LOG.exiting(CLASS_NAME, FUNCTION_NAME, entities);
+                
+                return entities;
         }
         
         public static void main(String[] args) throws Exception {
-                classify("I live in Washington.");
+                List<String> lst;
+                
+                lst = classify("I live in Washington and New York in United States.", new ArrayList<>(), new Config());
+                for (String str: lst)
+                        System.out.println(str);
         }
 }
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