private static void test(WordAligner wordAligner, List<SentencePair> testSentencePairs, Map<Integer, Alignment> testAlignments, boolean verbose) {
int proposedSureCount = 0;
int proposedPossibleCount = 0;
int sureCount = 0;
int proposedCount = 0;
for (SentencePair sentencePair : testSentencePairs) {
Alignment proposedAlignment = wordAligner.alignSentencePair(sentencePair);
Alignment referenceAlignment = testAlignments.get(sentencePair.getSentenceID());
if (referenceAlignment == null)
throw new RuntimeException("No reference alignment found for sentenceID "+sentencePair.getSentenceID());
if (verbose) System.out.println("Alignment:\n"+Alignment.render(referenceAlignment,proposedAlignment,sentencePair));
for (int frenchPosition = 0; frenchPosition < sentencePair.getFrenchWords().size(); frenchPosition++) {
for (int englishPosition = 0; englishPosition < sentencePair.getEnglishWords().size(); englishPosition++) {
boolean proposed = proposedAlignment.containsSureAlignment(englishPosition, frenchPosition);
boolean sure = referenceAlignment.containsSureAlignment(englishPosition, frenchPosition);
boolean possible = referenceAlignment.containsPossibleAlignment(englishPosition, frenchPosition);
if (proposed && sure) proposedSureCount += 1;
if (proposed && possible) proposedPossibleCount += 1;
if (proposed) proposedCount += 1;
if (sure) sureCount += 1;
}
}
}
System.out.println("Precision: "+proposedPossibleCount/(double)proposedCount);
System.out.println("Recall: "+proposedSureCount/(double)sureCount);
System.out.println("AER: "+(1.0-(proposedSureCount+proposedPossibleCount)/(double)(sureCount+proposedCount)));
}
private static void predict(WordAligner wordAligner, List<SentencePair> testSentencePairs, String path) throws IOException {
BufferedWriter writer = new BufferedWriter(new FileWriter(path));
for (SentencePair sentencePair : testSentencePairs) {
Alignment proposedAlignment = wordAligner.alignSentencePair(sentencePair);
for (int frenchPosition = 0; frenchPosition < sentencePair.getFrenchWords().size(); frenchPosition++) {
for (int englishPosition = 0; englishPosition < sentencePair.getEnglishWords().size(); englishPosition++) {
if (proposedAlignment.containsSureAlignment(englishPosition, frenchPosition)) {
writer.write(frenchPosition + "-" + englishPosition + " ");
}
}
}
writer.write("\n");
}
writer.close();
}