public ArrayList<String> getNamedEntity(String sentence) {
ArrayList<String> entities = new ArrayList<>();
List<Triple<String, Integer, Integer>> name2index =
classifier.classifyToCharacterOffsets(sentence);
for (Triple<String, Integer, Integer> name : name2index) {
entities.add(sentence.substring(name.second(), name.third()));
}
return entities;
}
public Map<String, NamedEntity> findNamedEntities(String sentence) {
final Map<String, NamedEntity> namedEntities = new HashMap<>();
final List<Triple<String, Integer, Integer>> nerSubstrings = findNerSubstrings(sentence);
for (final Triple<String, Integer, Integer> substring : nerSubstrings) {
namedEntities.put(
sentence.substring(substring.second(), substring.third()),
NamedEntity.getNamedEntity(substring.first()));
}
return namedEntities;
}
public String getPrecisionDescription(int numDigits, L label) {
NumberFormat nf = NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(numDigits);
Triple<Double, Integer, Integer> prec = getPrecisionInfo(label);
return nf.format(prec.first())
+ " ("
+ prec.second()
+ "/"
+ (prec.second() + prec.third())
+ ")";
}
public String getRecallDescription(int numDigits, L label) {
NumberFormat nf = NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(numDigits);
Triple<Double, Integer, Integer> recall = getRecallInfo(label);
return nf.format(recall.first())
+ " ("
+ recall.second()
+ "/"
+ (recall.second() + recall.third())
+ ")";
}
/** Returns a String summarizing overall accuracy that will print nicely. */
public String getAccuracyDescription(int numDigits) {
NumberFormat nf = NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(numDigits);
Triple<Double, Integer, Integer> accu = getAccuracyInfo();
return nf.format(accu.first())
+ " ("
+ accu.second()
+ "/"
+ (accu.second() + accu.third())
+ ")";
}
public static Set<String> analyzeThisFile(String path) {
String serializedClassifier = "classifiers/english.conll.4class.distsim.crf.ser.gz";
Set<String> annotationsNE = new HashSet<String>();
try {
BufferedReader br = new BufferedReader(new FileReader(path));
AbstractSequenceClassifier<CoreLabel> classifier =
CRFClassifier.getClassifier(serializedClassifier);
String line = "";
while ((line = br.readLine()) != null) {
List<Triple<String, Integer, Integer>> triples =
classifier.classifyToCharacterOffsets(line);
for (Triple<String, Integer, Integer> trip : triples) {
annotationsNE.add(line.substring(trip.second(), trip.third()));
}
}
System.out.println("Named Entity TROVATE");
for (String ne : annotationsNE) System.out.println(ne);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassCastException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return annotationsNE;
}
private String getConllEvalString(List<L> orderedLabels, boolean ignoreNegLabel) {
StringBuilder sb = new StringBuilder();
int correctPhrases = getCorrect() - getCorrect(negLabel);
Triple<Double, Integer, Integer> accuracyInfo = getAccuracyInfo();
int totalCount = accuracyInfo.second() + accuracyInfo.third();
sb.append("processed " + totalCount + " tokens with " + getRelevant() + " phrases; ");
sb.append("found: " + getRetrieved() + " phrases; correct: " + correctPhrases + "\n");
Formatter formatter = new Formatter(sb, Locale.US);
formatter.format("accuracy: %6.2f%%; ", accuracyInfo.first() * 100);
formatter.format("precision: %6.2f%%; ", getPrecision() * 100);
formatter.format("recall: %6.2f%%; ", getRecall() * 100);
formatter.format("FB1: %6.2f\n", getFMeasure() * 100);
for (L label : orderedLabels) {
if (ignoreNegLabel && label.equals(negLabel)) {
continue;
}
formatter.format("%17s: ", label);
formatter.format("precision: %6.2f%%; ", getPrecision(label) * 100);
formatter.format("recall: %6.2f%%; ", getRecall(label) * 100);
formatter.format("FB1: %6.2f %d\n", getFMeasure(label) * 100, getRetrieved(label));
}
return sb.toString();
}
public static void main(String[] args) throws Exception {
// String serializedClassifier = "classifiers/english.all.3class.distsim.crf.ser.gz";
String serializedClassifier = "classifiers/english.muc.7class.distsim.crf.ser.gz";
if (args.length > 0) {
serializedClassifier = args[0];
}
AbstractSequenceClassifier<CoreLabel> classifier =
CRFClassifier.getClassifier(serializedClassifier);
/* For either a file to annotate or for the hardcoded text example, this
demo file shows several ways to process the input, for teaching purposes.
*/
if (args.length > 1) {
/* For the file, it shows (1) how to run NER on a String, (2) how
to get the entities in the String with character offsets, and
(3) how to run NER on a whole file (without loading it into a String).
*/
String fileContents = IOUtils.slurpFile(args[1]);
List<List<CoreLabel>> out = classifier.classify(fileContents);
for (List<CoreLabel> sentence : out) {
for (CoreLabel word : sentence) {
System.out.print(
word.word() + '/' + word.get(CoreAnnotations.AnswerAnnotation.class) + ' ');
}
System.out.println();
}
System.out.println("---");
out = classifier.classifyFile(args[1]);
for (List<CoreLabel> sentence : out) {
for (CoreLabel word : sentence) {
System.out.print(
word.word() + '/' + word.get(CoreAnnotations.AnswerAnnotation.class) + ' ');
}
System.out.println();
}
System.out.println("---");
List<Triple<String, Integer, Integer>> list =
classifier.classifyToCharacterOffsets(fileContents);
for (Triple<String, Integer, Integer> item : list) {
// print entity/or non-entity - their nearby tokens
System.out.println(
item.first() + ": " + fileContents.substring(item.second(), item.third()));
}
System.out.println("---");
System.out.println("Ten best entity labelings");
DocumentReaderAndWriter<CoreLabel> readerAndWriter =
classifier.makePlainTextReaderAndWriter();
classifier.classifyAndWriteAnswersKBest(args[1], 10, readerAndWriter);
System.out.println("---");
System.out.println("Per-token marginalized probabilities");
classifier.printProbs(args[1], readerAndWriter);
// -- This code prints out the first order (token pair) clique probabilities.
// -- But that output is a bit overwhelming, so we leave it commented out by default.
// System.out.println("---");
// System.out.println("First Order Clique Probabilities");
// ((CRFClassifier) classifier).printFirstOrderProbs(args[1], readerAndWriter);
} else {
/* For the hard-coded String, it shows how to run it on a single
sentence, and how to do this and produce several formats, including
slash tags and an inline XML output format. It also shows the full
contents of the {@code CoreLabel}s that are constructed by the
classifier. And it shows getting out the probabilities of different
assignments and an n-best list of classifications with probabilities.
*/
String[] example = {
"Good afternoon Rajat Raina, how are you today? I go to Washington DC on September 19. And Tomorrow.",
"I go to school at Stanford University, which is located in California."
};
for (String str : example) {
System.out.println(classifier.classifyToString(str));
}
System.out.println("---");
// ***sentence-by-sentence
for (String str : example) {
// This one puts in spaces and newlines between tokens, so just print not println.
System.out.print(classifier.classifyToString(str, "slashTags", false));
}
System.out.println("---");
// ***print: entities + Classes + remaining text in the text
for (String str : example) {
// This one is best for dealing with the output as a TSV (tab-separated column) file.
// The first column gives entities, the second their classes, and the third the remaining
// text in a document
System.out.print(classifier.classifyToString(str, "tabbedEntities", false));
}
System.out.println("---");
for (String str : example) {
System.out.println(classifier.classifyWithInlineXML(str));
}
System.out.println("---");
for (String str : example) {
System.out.println(classifier.classifyToString(str, "xml", true));
}
System.out.println("---");
for (String str : example) {
System.out.print(classifier.classifyToString(str, "tsv", false));
}
System.out.println("---");
// This gets out entities with character offsets
System.out.print("character offsets");
int j = 0;
for (String str : example) {
j++;
List<Triple<String, Integer, Integer>> triples = classifier.classifyToCharacterOffsets(str);
for (Triple<String, Integer, Integer> trip : triples) {
System.out.printf(
"%s over character offsets [%d, %d) in sentence %d.%n",
trip.first(), trip.second(), trip.third, j);
}
}
System.out.println("---");
// This prints out all the details of what is stored for each token
int i = 0;
for (String str : example) {
for (List<CoreLabel> lcl : classifier.classify(str)) {
for (CoreLabel cl : lcl) {
System.out.print(i++ + ": ");
System.out.println(cl.toShorterString());
}
}
}
System.out.println("---");
}
}
public void train(Collection<Pair<Document, List<Entity>>> trainingData) {
startTrack("Training");
// --Variables
RVFDataset<Boolean, Feature> dataset = new RVFDataset<Boolean, Feature>();
LinearClassifierFactory<Boolean, Feature> fact =
new LinearClassifierFactory<Boolean, Feature>();
// --Feature Extraction
startTrack("Feature Extraction");
for (Pair<Document, List<Entity>> datum : trainingData) {
// (document variables)
Document doc = datum.getFirst();
List<Entity> goldClusters = datum.getSecond();
List<Mention> mentions = doc.getMentions();
Map<Mention, Entity> goldEntities = Entity.mentionToEntityMap(goldClusters);
startTrack("Document " + doc.id);
// (for each mention...)
for (int i = 0; i < mentions.size(); i++) {
// (get the mention and its cluster)
Mention onPrix = mentions.get(i);
Entity source = goldEntities.get(onPrix);
if (source == null) {
throw new IllegalArgumentException("Mention has no gold entity: " + onPrix);
}
// (for each previous mention...)
int oldSize = dataset.size();
for (int j = i - 1; j >= 0; j--) {
// (get previous mention and its cluster)
Mention cand = mentions.get(j);
Entity target = goldEntities.get(cand);
if (target == null) {
throw new IllegalArgumentException("Mention has no gold entity: " + cand);
}
// (extract features)
Counter<Feature> feats =
extractor.extractFeatures(Pair.make(onPrix, cand.markCoreferent(target)));
// (add datum)
dataset.add(new RVFDatum<Boolean, Feature>(feats, target == source));
// (stop if
if (target == source) {
break;
}
}
// logf("Mention %s (%d datums)", onPrix.toString(), dataset.size() - oldSize);
}
endTrack("Document " + doc.id);
}
endTrack("Feature Extraction");
// --Train Classifier
startTrack("Minimizer");
this.classifier = fact.trainClassifier(dataset);
endTrack("Minimizer");
// --Dump Weights
startTrack("Features");
// (get labels to print)
Set<Boolean> labels = new HashSet<Boolean>();
labels.add(true);
// (print features)
for (Triple<Feature, Boolean, Double> featureInfo :
this.classifier.getTopFeatures(labels, 0.0, true, 100, true)) {
Feature feature = featureInfo.first();
Boolean label = featureInfo.second();
Double magnitude = featureInfo.third();
// log(FORCE,new DecimalFormat("0.000").format(magnitude) + " [" + label + "] " + feature);
}
end_Track("Features");
endTrack("Training");
}