Package opennlp.tools.formats

Class EvalitaNameSampleStream

java.lang.Object

opennlp.tools.formats.EvalitaNameSampleStream

All Implemented Interfaces:

AutoCloseable, ObjectStream<NameSample>

public class EvalitaNameSampleStream
extends Object
implements ObjectStream<NameSample>

Parser for the Italian NER training files of the Evalita 2007 and 2009 NER shared tasks.

The data does not contain article boundaries, adaptive data will be cleared for every sentence.

Named Entities are annotated in the IOB2 format (as used in CoNLL 2002 shared task)

The Named Entity tag consists of two parts: 1. The IOB2 tag: 'B' (for 'begin') denotes the first token of a Named Entity, I (for 'inside') is used for all other tokens in a Named Entity, and 'O' (for 'outside') is used for all other words; 2. The Entity type tag: PER (for Person), ORG (for Organization), GPE (for Geo-Political Entity), or LOC (for Location).

Each file consists of four columns separated by a blank, containing respectively the token, the Elsnet PoS-tag, the Adige news story to which the token belongs, and the Named Entity tag.

Data can be found on this web site:
http://www.evalita.it

Note: Do not use this class, internal use only!

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	EvalitaNameSampleStream.LANGUAGE

Field Summary

Fields

Modifier and Type	Field	Description
static String	DOCSTART
static int	GENERATE_GPE_ENTITIES
static int	GENERATE_LOCATION_ENTITIES
static int	GENERATE_ORGANIZATION_ENTITIES
static int	GENERATE_PERSON_ENTITIES

Constructor Summary

Constructors

Constructor	Description
EvalitaNameSampleStream(EvalitaNameSampleStream.LANGUAGE lang, InputStreamFactory in, int types)
EvalitaNameSampleStream(EvalitaNameSampleStream.LANGUAGE lang, ObjectStream<String> lineStream, int types)

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the ObjectStream and releases all allocated resources.
NameSample	read()	Returns the next object.
void	reset()	Repositions the stream at the beginning and the previously seen object sequence will be repeated exactly.

Methods inherited from class java.lang.Object

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

Field Detail

GENERATE_PERSON_ENTITIES

public static final int GENERATE_PERSON_ENTITIES

See Also:

Constant Field Values

GENERATE_ORGANIZATION_ENTITIES

public static final int GENERATE_ORGANIZATION_ENTITIES

See Also:

Constant Field Values

GENERATE_LOCATION_ENTITIES

public static final int GENERATE_LOCATION_ENTITIES

See Also:

Constant Field Values

GENERATE_GPE_ENTITIES

public static final int GENERATE_GPE_ENTITIES

See Also:

Constant Field Values

DOCSTART

public static final String DOCSTART

See Also:

Constant Field Values

Constructor Detail

EvalitaNameSampleStream

public EvalitaNameSampleStream(EvalitaNameSampleStream.LANGUAGE lang,
                               ObjectStream<String> lineStream,
                               int types)

EvalitaNameSampleStream

public EvalitaNameSampleStream(EvalitaNameSampleStream.LANGUAGE lang,
                               InputStreamFactory in,
                               int types)
                        throws IOException

Throws:

IOException

Method Detail

read

public NameSample 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<NameSample>

Returns:

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

Throws:

IOException - if there is an error during reading

reset

public void reset()
           throws IOException,
                  UnsupportedOperationException

Description copied from interface: ObjectStream

Repositions the stream at the beginning and the previously seen object sequence will be repeated exactly. This method can be used to re-read the stream if multiple passes over the objects are required. The implementation of this method is optional.

Specified by:

reset in interface ObjectStream<NameSample>

Throws:

IOException - if there is an error during reseting the stream

UnsupportedOperationException

close

public void close()
           throws IOException

Description copied from interface: ObjectStream

Closes the ObjectStream and releases all allocated resources. After close was called its not allowed to call read or reset.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ObjectStream<NameSample>

Throws:

IOException - if there is an error during closing the stream