Package opennlp.tools.namefind
Class NameFinderEventStream
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- opennlp.tools.util.AbstractEventStream<NameSample>
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- opennlp.tools.namefind.NameFinderEventStream
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- All Implemented Interfaces:
AutoCloseable,ObjectStream<Event>
public class NameFinderEventStream extends AbstractEventStream<NameSample>
Class for creating an event stream out of data files for training an name finder.
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Constructor Summary
Constructors Constructor Description NameFinderEventStream(ObjectStream<NameSample> dataStream)NameFinderEventStream(ObjectStream<NameSample> dataStream, String type, NameContextGenerator contextGenerator, SequenceCodec<String> codec)Creates a new name finder event stream using the specified data stream and context generator.
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Method Summary
All Methods Static Methods Concrete Methods Deprecated Methods Modifier and Type Method Description static String[][]additionalContext(String[] tokens, Map<String,String> prevMap)Generated previous decision features for each token based on contents of the specified map.static List<Event>generateEvents(String[] sentence, String[] outcomes, NameContextGenerator cg)static String[]generateOutcomes(Span[] names, String type, int length)Deprecated.use the BioCodec implementation of the SequenceValidator instead!-
Methods inherited from class opennlp.tools.util.AbstractEventStream
close, read, reset
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Constructor Detail
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NameFinderEventStream
public NameFinderEventStream(ObjectStream<NameSample> dataStream, String type, NameContextGenerator contextGenerator, SequenceCodec<String> codec)
Creates a new name finder event stream using the specified data stream and context generator.- Parameters:
dataStream- The data stream of events.type- null or overrides the type parameter in the provided samplescontextGenerator- The context generator used to generate features for the event stream.
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NameFinderEventStream
public NameFinderEventStream(ObjectStream<NameSample> dataStream)
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Method Detail
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generateOutcomes
@Deprecated public static String[] generateOutcomes(Span[] names, String type, int length)
Deprecated.use the BioCodec implementation of the SequenceValidator instead!Generates the name tag outcomes (start, continue, other) for each token in a sentence with the specified length using the specified name spans.- Parameters:
names- Token spans for each of the names.type- null or overrides the type parameter in the provided sampleslength- The length of the sentence.- Returns:
- An array of start, continue, other outcomes based on the specified names and sentence length.
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generateEvents
public static List<Event> generateEvents(String[] sentence, String[] outcomes, NameContextGenerator cg)
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additionalContext
public static String[][] additionalContext(String[] tokens, Map<String,String> prevMap)
Generated previous decision features for each token based on contents of the specified map.- Parameters:
tokens- The token for which the context is generated.prevMap- A mapping of tokens to their previous decisions.- Returns:
- An additional context array with features for each token.
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