Examples of TokenFilter

edu.ucla.sspace.text.TokenFilter

A utility for asserting what tokens are valid and invalid within a stream of tokens. A filter may be either inclusive or exclusive.

An inclusive filter will accept only those tokens with which it was initialized. For an example, an inclusive filter initialized with all of the words in the english dictionary would exclude all misspellings or foreign words in a token stream.

An exclusive filter will aceept only those tokens that are not in set with which it was initialized. An exclusive filter is often used with a list of common words that should be excluded, which is also known as a "stop list."

{@code TokenFilter} instances may be combined into a linear chain of filters.This allows for a highly configurable filter to be made from mulitple rules. Chained filters are created in a linear order and each filter must accept the token for the last filter to return {@code}. If the any of the earlier filters return {@code false}, then the token is not accepted.

This class also provides a static utility function {@link #loadFromSpecification(String) loadFromSpecification} for initializing achain of filters from a text configuration. This is intended to facility command-line tools that want to provide easily configurable filters. An example configuration might look like: include=top-tokens.txt:test-words.txt,exclude=stop-words.txt @see FilteredIterator

org.apache.lucene.analysis.TokenFilter

A TokenFilter is a TokenStream whose input is another token stream.

This is an abstract class. NOTE: subclasses must override {@link #incrementToken()} if the new TokenStream API is usedand {@link #next(Token)} or {@link #next()} if the oldTokenStream API is used.

See {@link TokenStream}

org.apache.tools.ant.filters.TokenFilter

This splits up input into tokens and passes the tokens to a sequence of filters. @author Peter Reilly @since Ant 1.6 @see BaseFilterReader @see ChainableReader @see DynamicConfigurator

org.apache.uima.conceptMapper.support.tokens.TokenFilter

        LineContainsRegExp lcre = new LineContainsRegExp();
        RegularExpression regexp = new RegularExpression();
        regexp.setPattern("^import .+;");
        lcre.addConfiguredRegexp(regexp);
        filterChain.add(lcre);
        TokenFilter tf = new TokenFilter();
        TokenFilter.ReplaceRegex rre = new TokenFilter.ReplaceRegex();
        rre.setPattern("import (.+);.*");
        rre.setReplace("\\1");
        tf.add(rre);
        filterChain.add(tf);
        _concat.addFilterChain(filterChain);
    }

      TokenNormalizer tokenNormalizer = new TokenNormalizer(aContext, logger);


      // open input stream to data
      dictStream = dictLoader.getInputStream();


      TokenFilter tokenFilter = new TokenFilter(tokenAnnotationName, tokenTypeFeatureName,
              tokenClassFeatureName, logger);
      tokenFilter.initConfig(aContext);


      String langID = (String) aContext.getConfigParameterValue(PARAM_LANGID);
      if ((langID == null) || (langID == ""))
      {
        langID = DEFAULT_LANGID;

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Examples of TokenFilter

Examples of org.apache.tools.ant.filters.TokenFilter

Examples of org.apache.uima.conceptMapper.support.tokens.TokenFilter