private void processNode(
SentenceParser.Node node,
List<String> sentence,
List<String> tags,
List<String> target,
String inheritedTag) {
String phraseTag = getChunkTag(node);
boolean inherited = false;
if (phraseTag.equals(OTHER) && inheritedTag != null) {
phraseTag = inheritedTag;
inherited = true;
}
TreeElement[] elements = node.getElements();
for (int i = 0; i < elements.length; i++) {
if (elements[i].isLeaf()) {
boolean isIntermediate = false;
String tag = phraseTag;
SentenceParser.Leaf leaf = (SentenceParser.Leaf) elements[i];
String localChunk = getChunkTag(leaf);
if (localChunk != null && !tag.equals(localChunk)) {
tag = localChunk;
}
if (isIntermediate(tags, target, tag) && (inherited || i > 0)) {
isIntermediate = true;
}
if (!isIncludePunctuations()
&& leaf.getFunctionalTag() == null
&& (!(i + 1 < elements.length && elements[i + 1].isLeaf())
|| !(i > 0 && elements[i - 1].isLeaf()))) {
isIntermediate = false;
tag = OTHER;
}
processLeaf(leaf, isIntermediate, tag, sentence, tags, target);
} else {
int before = target.size();
processNode((SentenceParser.Node) elements[i], sentence, tags, target, phraseTag);
// if the child node was of a different type we should break the chunk sequence
for (int j = target.size() - 1; j >= before; j--) {
if (!target.get(j).endsWith("-" + phraseTag)) {
phraseTag = OTHER;
break;
}
}
}
}
}
protected String getChunkTag(SentenceParser.Leaf leaf) {
String tag = leaf.getSyntacticTag();
if ("P".equals(tag)) {
return "VP";
}
return null;
}
protected void processLeaf(
SentenceParser.Leaf leaf,
boolean isIntermediate,
String phraseTag,
List<String> sentence,
List<String> tags,
List<String> target) {
String chunkTag;
if (leaf.getFunctionalTag() != null && phraseTag.equals(OTHER)) {
phraseTag = getPhraseTagFromPosTag(leaf.getFunctionalTag());
}
if (!phraseTag.equals(OTHER)) {
if (isIntermediate) {
chunkTag = "I-" + phraseTag;
} else {
chunkTag = "B-" + phraseTag;
}
} else {
chunkTag = phraseTag;
}
sentence.add(leaf.getLexeme());
if (leaf.getSyntacticTag() == null) {
tags.add(leaf.getLexeme());
} else {
tags.add(ADChunkSampleStream.convertFuncTag(leaf.getFunctionalTag(), false));
}
target.add(chunkTag);
}