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 package org.apache.ctakes.temporal.ae.feature;
 
 import java.io.File;
 import java.util.List;
 import java.util.Map;
 
 import  org.cleartk.ml.Feature;
 import  org.cleartk.ml.feature.extractor.CleartkExtractorException;
 import  org.cleartk.ml.feature.extractor.FeatureExtractor1;
 
Given a token, check if this token is inside any identified annotation if so check if the identifiled annotion is a known event. If yes, get the weight.

Author(s):
Chen Lin 2/28/2013
 
 public class IdentifiedAnnotationFeatureExtractor implements FeatureExtractor1 {
 
   private String name;
 
   private Map<Stringdouble[]> textDoublesMap;
 
   private double[] meanValues;
   
   public static Map<Stringdouble[]> parseTextDoublesMap(File fileCharset charsetthrows IOException {
     return Files.readLines(filecharsetnew StringToDoublesProcessor());
   }
 
   static class StringToDoublesProcessor implements LineProcessor<Map<Stringdouble[]>> {
     private Logger logger = Logger.getLogger(this.getClass().getName());
 
     private Map<Stringdouble[]> result = new HashMap<Stringdouble[]>();
 
     private int length = -1;
 
     @Override
     public Map<Stringdouble[]> getResult() {
       return this.;
     }
 
     @Override
     public boolean processLine(String linethrows IOException {
       String[] parts = line.trim().split(",");
       String key = parts[0];
       int partsOffset = 0;
       if (this. == -1) {
         this. = parts.length;
       } else if (parts.length != this.) {
         String message = "expected %d parts, found %d, skipping line '%s'";
         this..warning(String.format(messagethis.parts.lengthline));
         return true;
       }
       double[] values = new double[parts.length - 1];
       for (int i = 0; i < values.length; ++i) {
         values[i] = Double.parseDouble(parts[i + 1 + partsOffset]);
       }
       this..put(keyvalues);
       return true;
     }
   }
 
   public IdentifiedAnnotationFeatureExtractor(String nameMap<Stringdouble[]> textDoublesMap) {
     super();
     this. = name;
     this. = textDoublesMap;
     int nMapEntries = this..size();
    if (nMapEntries == 0) {
      throw new IllegalArgumentException("textDoublesMap cannot be empty");
    }
    int nValues = textDoublesMap.entrySet().iterator().next().getValue().length;
    this. = new double[nValues];
    for (double[] values : textDoublesMap.values()) {
      for (int i = 0; i < values.length; ++i) {
        this.[i] += values[i];
      }
    }
    for (int i = 0; i < this..length; ++i) {
    	this.[i] /= nMapEntries;
    }
  }
  public List<Feature> extract(JCas viewAnnotation annotationthrows CleartkExtractorException {
			  JCasUtil.indexCovering(viewBaseToken.classIdentifiedAnnotation.class);
	  BaseToken targetTokenAnnotation = (BaseToken)annotation;
	  Collection<IdentifiedAnnotationidannoList = coveringMap.get(targetTokenAnnotation);
	  ArrayList<Feature> features = new ArrayList<Feature>();
	  if (idannoList != null && !idannoList.isEmpty())
	  {
		  features.add(new Feature("TokenInside","A_IdentifiedAnnotation"));
		  for (IdentifiedAnnotation ida : idannoList){
			  //check if the ida is a know event:
			  double[] values = this..get(ida.getCoveredText().toLowerCase());
			  if(values != null){
				  features.add(new Feature(this."is_A_KnownEvent"));
				  break;
			  }
		  }
	  }
	  return features;
  }
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