gate 文本处理引擎
下面是如何用程序调用gate，有些应用gui不合适啊。以后再介绍其他相关内容！
import java.util.*;
import java.io.*;
import java.net.*;
import gate.*;
import gate.creole.*;
import gate.util.*;
import gate.corpora.RepositioningInfo;
/**
* This class illustrates how to use ANNIE as a sausage machine
* in another application – put ingredients in one end (URLs pointing
* to documents) and get sausages (e.g. Named Entities) out the
* other end.
* <P><B>NOTE:</B><BR>
* For simplicity’s sake, we don’t do any exception handling.
*/
public class StandAloneAnnie {
/** The Corpus Pipeline application to contain ANNIE */
private SerialAnalyserController annieController;
/**
* Initialise the ANNIE system. This creates a “corpus pipeline”
* application that can be used to run sets of documents through
* the extraction system.
*/
public void initAnnie() throws GateException {
Out.prln(“Initialising ANNIE…”);
// create a serial analyser controller to run ANNIE with
annieController = (SerialAnalyserController) Factory.createResource(
“gate.creole.SerialAnalyserController”,
Factory.newFeatureMap(), Factory.newFeatureMap(), “ANNIE_”
+ Gate.genSym());
// load each PR as defined in ANNIEConstants
for (int i = 0; i < ANNIEConstants.PR_NAMES.length; i++) {
FeatureMap params = Factory.newFeatureMap(); // use default parameters
ProcessingResource pr = (ProcessingResource) Factory
.createResource(ANNIEConstants.PR_NAMES[i], params);
// add the PR to the pipeline controller
annieController.add(pr);
} // for each ANNIE PR
Out.prln(“…ANNIE loaded”);
} // initAnnie()
/** Tell ANNIE’s controller about the corpus you want to run on */
public void setCorpus(Corpus corpus) {
annieController.setCorpus(corpus);
} // setCorpus
/** Run ANNIE */
public void execute() throws GateException {
Out.prln(“Running ANNIE…”);
annieController.execute();
Out.prln(“…ANNIE complete”);
} // execute()
/**
* Run from the command-line, with a list of URLs as argument.
* <P><B>NOTE:</B><BR>
* This code will run with all the documents in memory – if you
* want to unload each from memory after use, add code to store
* the corpus in a DataStore.
*/
public static void main(String args[]) throws GateException, IOException {
// initialise the GATE library
Out.prln(“Initialising GATE…”);
Gate.init();
// Load ANNIE plugin
File gateHome = Gate.getGateHome();
File pluginsHome = new File(gateHome, “plugins”);
Gate.getCreoleRegister().registerDirectories(
new File(pluginsHome, “ANNIE”).toURL());
Out.prln(“…GATE initialised”);
// initialise ANNIE (this may take several minutes)
StandAloneAnnie annie = new StandAloneAnnie();
annie.initAnnie();
// create a GATE corpus and add a document for each command-line
// argument
Corpus corpus = (Corpus) Factory
.createResource(“gate.corpora.CorpusImpl”);
for (int i = 0; i < args.length; i++) {
URL u = new URL(args[i]);
FeatureMap params = Factory.newFeatureMap();
params.put(“sourceUrl”, u);
params.put(“preserveOriginalContent”, new Boolean(true));
params.put(“collectRepositioningInfo”, new Boolean(true));
Out.prln(“Creating doc for ” + u);
Document doc = (Document) Factory.createResource(
“gate.corpora.DocumentImpl”, params);
corpus.add(doc);
} // for each of args
// tell the pipeline about the corpus and run it
annie.execute();
// for each document, get an XML document with the
// person and location names added
Iterator iter = corpus.iterator();
int count = 0;
String startTagPart_1 = “<span GateID=”";
String startTagPart_2 = “” title=”";
String startTagPart_3 = “” style=”background:Red;”>”;
String endTag = “</span>”;
while (iter.hasNext()) {
Document doc = (Document) iter.next();
AnnotationSet defaultAnnotSet = doc.getAnnotations();
Set annotTypesRequired = new HashSet();
annotTypesRequired.add(“Person”);
annotTypesRequired.add(“Location”);
AnnotationSet peopleAndPlaces = defaultAnnotSet
.get(annotTypesRequired);
FeatureMap features = doc.getFeatures();
String originalContent = (String) features
.get(GateConstants.ORIGINAL_DOCUMENT_CONTENT_FEATURE_NAME);
RepositioningInfo info = (RepositioningInfo) features
.get(GateConstants.DOCUMENT_REPOSITIONING_INFO_FEATURE_NAME);
++count;
File file = new File(“StANNIE_” + count + “.HTML”);
Out.prln(“File name: ‘” + file.getAbsolutePath() + “‘”);
if (originalContent != null && info != null) {
Out
.prln(“OrigContent and reposInfo existing. Generate file…”);
Iterator it = peopleAndPlaces.iterator();
Annotation currAnnot;
SortedAnnotationList sortedAnnotations = new SortedAnnotationList();
while (it.hasNext()) {
currAnnot = (Annotation) it.next();
sortedAnnotations.addSortedExclusive(currAnnot);
} // while
StringBuffer editableContent = new StringBuffer(originalContent);
long insertPositionEnd;
long insertPositionStart;
// insert anotation tags backward
Out.prln(“Unsorted annotations count: ”
+ peopleAndPlaces.size());
Out.prln(“Sorted annotations count: ”
+ sortedAnnotations.size());
for (int i = sortedAnnotations.size() – 1; i >= 0; –i) {
currAnnot = (Annotation) sortedAnnotations.get(i);
insertPositionStart = currAnnot.getStartNode().getOffset()
.longValue();
insertPositionStart = info
.getOriginalPos(insertPositionStart);
insertPositionEnd = currAnnot.getEndNode().getOffset()
.longValue();
insertPositionEnd = info.getOriginalPos(insertPositionEnd,
true);
if (insertPositionEnd != -1 && insertPositionStart != -1) {
editableContent.insert((int) insertPositionEnd, endTag);
editableContent.insert((int) insertPositionStart,
startTagPart_3);
editableContent.insert((int) insertPositionStart,
currAnnot.getType());
editableContent.insert((int) insertPositionStart,
startTagPart_2);
editableContent.insert((int) insertPositionStart,
currAnnot.getId().toString());
editableContent.insert((int) insertPositionStart,
startTagPart_1);
} // if
} // for
FileWriter writer = new FileWriter(file);
writer.write(editableContent.toString());
writer.close();
} // if – should generate
else if (originalContent != null) {
Out.prln(“OrigContent existing. Generate file…”);
Iterator it = peopleAndPlaces.iterator();
Annotation currAnnot;
SortedAnnotationList sortedAnnotations = new SortedAnnotationList();
while (it.hasNext()) {
currAnnot = (Annotation) it.next();
sortedAnnotations.addSortedExclusive(currAnnot);
} // while
StringBuffer editableContent = new StringBuffer(originalContent);
long insertPositionEnd;
long insertPositionStart;
// insert anotation tags backward
Out.prln(“Unsorted annotations count: ”
+ peopleAndPlaces.size());
Out.p
rln(“Sorted annotations count: ”
+ sortedAnnotations.size());
for (int i = sortedAnnotations.size() – 1; i >= 0; –i) {
currAnnot = (Annotation) sortedAnnotations.get(i);
insertPositionStart = currAnnot.getStartNode().getOffset()
.longValue();
insertPositionEnd = currAnnot.getEndNode().getOffset()
.longValue();
if (insertPositionEnd != -1 && insertPositionStart != -1) {
editableContent.insert((int) insertPositionEnd, endTag);
editableContent.insert((int) insertPositionStart,
startTagPart_3);
editableContent.insert((int) insertPositionStart,
currAnnot.getType());
editableContent.insert((int) insertPositionStart,
startTagPart_2);
editableContent.insert((int) insertPositionStart,
currAnnot.getId().toString());
editableContent.insert((int) insertPositionStart,
startTagPart_1);
} // if
} // for
FileWriter writer = new FileWriter(file);
writer.write(editableContent.toString());
writer.close();
} else {
Out.prln(“Content : ” + originalContent);
Out.prln(“Repositioning: ” + info);
}
String xmlDocument = doc.toXml(peopleAndPlaces, false);
String fileName = new String(“StANNIE_toXML_” + count + “.HTML”);
FileWriter writer = new FileWriter(fileName);
writer.write(xmlDocument);
writer.close();
// do something usefull with the XML here!
// Out.prln(“‘”+xmlDocument+”‘”);
} // for each doc
} // main
/**
*
*/
public static class SortedAnnotationList extends Vector {
public SortedAnnotationList() {
super();
} // SortedAnnotationList
public boolean addSortedExclusive(Annotation annot) {
Annotation currAnot = null;
// overlapping check
for (int i = 0; i < size(); ++i) {
currAnot = (Annotation) get(i);
if (annot.overlaps(currAnot)) {
return false;
} // if
} // for
long annotStart = annot.getStartNode().getOffset().longValue();
long currStart;
// insert
for (int i = 0; i < size(); ++i) {
currAnot = (Annotation) get(i);
currStart = currAnot.getStartNode().getOffset().longValue();
if (annotStart < currStart) {
insertElementAt(annot, i);
/*
Out.prln(“Insert start: “+annotStart+” at position: “+i+” size=”+size());
Out.prln(“Current start: “+currStart);
*/
return true;
} // if
} // for
int size = size();
insertElementAt(annot, size);
//Out.prln(“Insert start: “+annotStart+” at size position: “+size);
return true;
} // addSorted
} // SortedAnnotationList
} // class StandAloneAnnie