/**
* Process each sentence to add the feature if necessary.
*
* @param carrier Instance to be processed.
* @return Instance with new features.
*/
public Instance pipe(Instance carrier) {
TokenSequence ts = (TokenSequence) carrier.getData();
for (int i = 0; i < ts.size(); i++) {
Token t = ts.get(i);
char[] text = t.getText().toCharArray();
int numDigit = 0;
for (int k = 0; k < text.length; k++) {
if (Character.isDigit(text[k])) {
numDigit++;
}
}
if (numDigit == 1) {
t.setFeatureValue("SingleDigit", 1.0);
} else if (numDigit == 2) {
t.setFeatureValue("TwoDigit", 1.0);
} else if (numDigit == 3) {
t.setFeatureValue("ThreeDigit", 1.0);
} else if (numDigit >= 4) {
t.setFeatureValue("MoreDigit", 1.0);
}
}
return carrier;
}
/**
* Generate an instance from the text covered by the given annotation.
*
* @param annotation an annotation representing a document segment, e.g. {@link Sentence}.
* @param tokenType the type to use for representing tokens, usually {@link Token}, but could also
* be any other type.
* @return
*/
private TokenSequence generateTokenSequence(AnnotationFS annotation, Type tokenType) {
TokenSequence tokenSequence = new TokenSequence();
for (AnnotationFS token : CasUtil.selectCovered(tokenType, annotation)) {
for (String tokenText : getTokensFromAnnotation(token, useLemma, minTokenLength)) {
tokenSequence.add(tokenText);
}
}
return tokenSequence;
}
/**
* Generate a TokenSequence from the whole document.
*
* @param aJCas a CAS holding the document
* @param tokenType this type will be used as token, e.g. Token, N-gram etc.
* @param useLemma if this is true, use lemmas
* @param minTokenLength the minimum token length to use
* @return a {@link TokenSequence}
* @throws FeaturePathException if the annotation type specified in {@code PARAM_TYPE_NAME} cannot
* be extracted.
*/
protected static TokenSequence generateTokenSequence(
JCas aJCas, Type tokenType, boolean useLemma, int minTokenLength)
throws FeaturePathException {
TokenSequence tokenSequence = new TokenSequence();
for (AnnotationFS token : CasUtil.select(aJCas.getCas(), tokenType)) {
for (String tokenText : getTokensFromAnnotation(token, useLemma, minTokenLength)) {
tokenSequence.add(tokenText);
}
}
return tokenSequence;
}
public Instance pipe(Instance carrier) {
TokenSequence ts = (TokenSequence) carrier.getData();
for (int i = 0; i < ts.size(); i++) {
Token t = ts.get(i);
String s = t.getText();
if (distinguishBorders) s = startBorderChar + s + endBorderChar;
int slen = s.length();
for (int j = 0; j < gramSizes.length; j++) {
int size = gramSizes[j];
for (int k = 0; k < (slen - size) + 1; k++)
t.setFeatureValue((prefix + s.substring(k, k + size)).intern(), 1.0);
}
}
return carrier;
}
public Instance pipe(Instance carrier) {
TokenSequence ts = (TokenSequence) carrier.getData();
for (int i = 0; i < ts.size(); i++) {
Token t = ts.get(i);
String s = t.getText();
if (distinguishBorders) s = startBorderChar + s + endBorderChar;
int slen = s.length();
for (int j = 0; j < gramSizes.length; j++) {
int size = gramSizes[j];
for (int k = 0; k < slen - size; k++)
t.setFeatureValue(
s.substring(k, k + size), 1.0); // original was substring(k, size), changed by Fuchun
}
}
return carrier;
}
public Instance pipe(Instance carrier) {
TokenSequence ts = (TokenSequence) carrier.getData();
// xxx This doesn't seem so efficient. Perhaps have TokenSequence
// use a LinkedList, and remove Tokens from it? -?
// But a LinkedList implementation of TokenSequence would be quite inefficient -AKM
TokenSequence ret = new TokenSequence();
Token prevToken = null;
for (int i = 0; i < ts.size(); i++) {
Token t = ts.get(i);
if (!stoplist.contains(caseSensitive ? t.getText() : t.getText().toLowerCase())) {
// xxx Should we instead make and add a copy of the Token?
ret.add(t);
prevToken = t;
} else if (markDeletions && prevToken != null)
prevToken.setProperty(FeatureSequenceWithBigrams.deletionMark, t.getText());
}
carrier.setData(ret);
return carrier;
}
public Instance pipe(Instance carrier) {
TokenSequence ts = (TokenSequence) carrier.getData();
TokenSequence targets =
carrier.getTarget() instanceof TokenSequence ? (TokenSequence) carrier.getTarget() : null;
TokenSequence source =
carrier.getSource() instanceof TokenSequence ? (TokenSequence) carrier.getSource() : null;
StringBuffer sb = new StringBuffer();
if (prefix != null) sb.append(prefix);
sb.append("name: " + carrier.getName() + "\n");
for (int i = 0; i < ts.size(); i++) {
if (source != null) {
sb.append(source.get(i).getText());
sb.append(' ');
}
if (carrier.getTarget() instanceof TokenSequence) {
sb.append(((TokenSequence) carrier.getTarget()).get(i).getText());
sb.append(' ');
}
if (carrier.getTarget() instanceof FeatureSequence) {
sb.append(((FeatureSequence) carrier.getTarget()).getObjectAtPosition(i).toString());
sb.append(' ');
}
PropertyList pl = ts.get(i).getFeatures();
if (pl != null) {
PropertyList.Iterator iter = pl.iterator();
while (iter.hasNext()) {
iter.next();
double v = iter.getNumericValue();
if (v == 1.0) sb.append(iter.getKey());
else sb.append(iter.getKey() + '=' + v);
sb.append(' ');
}
}
sb.append('\n');
}
System.out.print(sb.toString());
return carrier;
}
public Instance pipe(Instance carrier) {
TokenSequence ts = (TokenSequence) carrier.getData();
int tsSize = ts.size();
PropertyList[] oldfs = new PropertyList[ts.size()];
PropertyList[] newfs = new PropertyList[ts.size()];
for (int i = 0; i < tsSize; i++) oldfs[i] = ts.get(i).getFeatures();
if (includeOriginalSingletons)
for (int i = 0; i < tsSize; i++) newfs[i] = ts.get(i).getFeatures();
for (int i = 0; i < ts.size(); i++) {
// System.out.println ("OffsetPropertyConjunctions: ts index="+i+", conjunction =");
conjunctionList:
for (int j = 0; j < conjunctions.length; j++) {
// Make sure that the offsets in the conjunction are all available at this position
for (int k = 0; k < conjunctions[j].length; k++) {
if (conjunctions[j][k] + i < 0
|| conjunctions[j][k] + i > tsSize - 1
|| oldfs[i + conjunctions[j][k]] == null) continue conjunctionList;
// System.out.print (" "+conjunctions[j][k]);
}
// System.out.print ("\n");
// Add the features for this conjunction
if (conjunctions[j].length == 1) {
int offset = conjunctions[j][0];
if (offset == 0 && includeOriginalSingletons)
throw new IllegalArgumentException("Original singletons already there.");
PropertyList.Iterator iter = oldfs[i + offset].iterator();
while (iter.hasNext()) {
iter.next();
if (propertyKey != null && !propertyKey.equals(iter.getKey())) continue;
String key = iter.getKey() + (offset == 0 ? "" : "@" + offset);
newfs[i] = PropertyList.add(key, iter.getNumericValue(), newfs[i]);
}
} else if (conjunctions[j].length == 2) {
// System.out.println ("token="+ts.getToken(i).getText()+" conjunctionIndex="+j);
int offset0 = conjunctions[j][0];
int offset1 = conjunctions[j][1];
PropertyList.Iterator iter0 = oldfs[i + offset0].iterator();
int iter0i = -1;
while (iter0.hasNext()) {
iter0i++;
iter0.next();
if (propertyKey != null && !propertyKey.equals(iter0.getKey())) continue;
PropertyList.Iterator iter1 = oldfs[i + offset1].iterator();
int iter1i = -1;
while (iter1.hasNext()) {
iter1i++;
iter1.next();
if (propertyKey != null && !propertyKey.equals(iter1.getKey())) continue;
// Avoid redundant doubling of feature space; include only upper triangle
// System.out.println ("off0="+offset0+" off1="+offset1+" iter0i="+iter0i+"
// iter1i="+iter1i);
if (offset0 == offset1 && iter1i <= iter0i) continue;
// System.out.println (">off0="+offset0+" off1="+offset1+" iter0i="+iter0i+"
// iter1i="+iter1i);
String key =
iter0.getKey()
+ (offset0 == 0 ? "" : "@" + offset0)
+ "&"
+ iter1.getKey()
+ (offset1 == 0 ? "" : "@" + offset1);
newfs[i] =
PropertyList.add(
key, iter0.getNumericValue() * iter1.getNumericValue(), newfs[i]);
}
}
} else if (conjunctions[j].length == 3) {
int offset0 = conjunctions[j][0];
int offset1 = conjunctions[j][1];
int offset2 = conjunctions[j][2];
PropertyList.Iterator iter0 = oldfs[i + offset0].iterator();
int iter0i = -1;
while (iter0.hasNext()) {
iter0i++;
iter0.next();
if (propertyKey != null && !propertyKey.equals(iter0.getKey())) continue;
PropertyList.Iterator iter1 = oldfs[i + offset1].iterator();
int iter1i = -1;
while (iter1.hasNext()) {
iter1i++;
iter1.next();
if (propertyKey != null && !propertyKey.equals(iter1.getKey())) continue;
// Avoid redundant doubling of feature space; include only upper triangle
if (offset0 == offset1 && iter1i <= iter0i) continue;
PropertyList.Iterator iter2 = oldfs[i + offset2].iterator();
int iter2i = -1;
while (iter2.hasNext()) {
iter2i++;
iter2.next();
if (propertyKey != null && !propertyKey.equals(iter2.getKey())) continue;
// Avoid redundant doubling of feature space; include only upper triangle
if (offset1 == offset2 && iter2i <= iter1i) continue;
String key =
iter0.getKey()
+ (offset0 == 0 ? "" : "@" + offset0)
+ "&"
+ iter1.getKey()
+ (offset1 == 0 ? "" : "@" + offset1)
+ "&"
+ iter2.getKey()
+ (offset2 == 0 ? "" : "@" + offset2);
newfs[i] =
PropertyList.add(
key,
iter0.getNumericValue() * iter1.getNumericValue() * iter2.getNumericValue(),
newfs[i]);
}
}
}
} else {
throw new UnsupportedOperationException(
"Conjunctions of length 4 or more not yet implemented.");
}
}
}
// Put the new PropertyLists in place
for (int i = 0; i < ts.size(); i++) ts.get(i).setFeatures(newfs[i]);
return carrier;
}
