opennlp.tools.ml.model

Class RealValueFileEventStream

java.lang.Object

opennlp.tools.ml.model.FileEventStream

opennlp.tools.ml.model.RealValueFileEventStream

All Implemented Interfaces:

AutoCloseable, ObjectStream<Event>

public class RealValueFileEventStream
extends FileEventStream

Constructor Summary

Constructors

Constructor and Description
RealValueFileEventStream(File file)
RealValueFileEventStream(String fileName)
RealValueFileEventStream(String fileName, String encoding)

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(String[] args) Trains and writes a model based on the events in the specified event file.
static float[]	parseContexts(String[] contexts) Parses the specified contexts and re-populates context array with features and returns the values for these features.
Event	read() Returns the next object.

Methods inherited from class opennlp.tools.ml.model.FileEventStream

close, reset, toLine

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RealValueFileEventStream

public RealValueFileEventStream(String fileName)
                         throws IOException

Throws:

IOException

RealValueFileEventStream

public RealValueFileEventStream(String fileName,
                        String encoding)
                         throws IOException

Throws:

IOException

RealValueFileEventStream

public RealValueFileEventStream(File file)
                         throws IOException

Throws:

IOException

Method Detail

parseContexts

public static float[] parseContexts(String[] contexts)

Parses the specified contexts and re-populates context array with features and returns the values for these features. If all values are unspecified, then null is returned.

Parameters:

contexts - The contexts with real values specified.

Returns:

The value for each context or null if all values are unspecified.

read

public Event read()
           throws IOException

Description copied from interface: ObjectStream

Returns the next object. Calling this method repeatedly until it returns null will return each object from the underlying source exactly once.

Specified by:

read in interface ObjectStream<Event>

Overrides:

read in class FileEventStream

Returns:

the next object or null to signal that the stream is exhausted

Throws:

IOException - if there is an error during reading

main

public static void main(String[] args)
                 throws IOException

Trains and writes a model based on the events in the specified event file. the name of the model created is based on the event file name.

Parameters:

args - eventfile [iterations cuttoff]

Throws:

IOException - when the eventfile can not be read or the model file can not be written.