我正在使用UIMA构建XML的文本提取器。由于我是UIMA框架的初学者,我想知道如何去做。
据我所知,UIMA可以注释文件的特定部分,但如何有效地提取信息?任何帮助表示赞赏。
谢谢, Jatin
答案 0 :(得分:3)
在UIMA Ruta的开发人员的有限视角中,我使用了UIMA Ruta的HtmlAnnotator来处理这些用例。这当然不是最有效的方法。分析引擎不会对元素使用单独的类型,因为它只知道最常见的html标记,但是如果需要,我会在UIMA Ruta中执行转换为预定义类型系统。在后端,htmlparser已应用。
答案 1 :(得分:1)
这是一个集合阅读器,可以帮助您入门:
import static com.google.common.base.Preconditions.checkArgument;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;
import org.apache.uima.UimaContext;
import org.apache.uima.collection.CollectionException;
import org.apache.uima.fit.descriptor.TypeCapability;
import org.apache.uima.jcas.JCas;
import org.apache.uima.resource.ResourceInitializationException;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.Text;
import org.jdom2.input.SAXBuilder;
import org.jdom2.output.Format;
import org.jdom2.output.XMLOutputter;
import org.jdom2.xpath.XPathExpression;
import org.jdom2.xpath.XPathFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@TypeCapability(outputs = "xxx")
public class XmlCollectionReader extends JCasCollectionReader_ImplBase {
private static Logger LOG = LoggerFactory.getLogger(XmlCollectionReader.class);
private SAXBuilder builder;
private XMLOutputter xo;
private XPathExpression<Object> sentenceXPath;
@Override
public void initialize(UimaContext context) throws ResourceInitializationException {
super.initialize(context);
try {
File corpusDir = new File(inputDir);
checkArgument(corpusDir.exists());
fileIterator = DirectoryIterator.get(directoryIterator, corpusDir, "xml", false);
builder = new SAXBuilder();
xo = new XMLOutputter();
xo.setFormat(Format.getRawFormat());
sentenceXPath = XPathFactory.instance().compile("//S");
} catch (Exception e) {
throw new ResourceInitializationException(
ResourceInitializationException.NO_RESOURCE_FOR_PARAMETERS,
new Object[] { inputDir });
}
}
public void getNext(JCas jcas) throws IOException, CollectionException {
File file = fileIterator.next();
try {
LOG.debug("reading {}", file.getName());
Document doc = builder.build(new FileInputStream(file));
Element rootNode = doc.getRootElement();
String title = xo.outputString(rootNode.getChild("Title").getContent());
for (Object sentence : sentenceXPath.evaluate(rootNode)) {
Element sentenceE = (Element) sentence;
...
}
}
jcas.setDocumentText(...);
} catch (JDOMException e) {
throw new CollectionException(e);
}
}
}