Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## cc.mallet.pipe
Class TokenSequenceMatchDataAndTarget

    java.lang.Object
      cc.mallet.pipe.Pipe
          cc.mallet.pipe.TokenSequenceMatchDataAndTarget

All Implemented Interfaces:
  AlphabetCarrying, java.io.Serializable

    public class TokenSequenceMatchDataAndTarget

extends Pipe
implements java.io.Serializable

Run a regular expression over the text of each token; replace the text with the substring matching one regex group; create a target TokenSequence from the text matching another regex group.

For example, if you have a data file containing one line per token, and the label also appears on that line, you can first get a TokenSequence in which the text of each line is the Token.getText() of each token, then run this pipe, and separate the target information from the data information. For example to process the following,

             BACKGROUND Then
             PERSON Mr.
             PERSON Smith
             BACKGROUND said
             ...

use `new TokenSequenceMatchDataAndTarget (Pattern.compile ("([A-Z]+) (.*)"), 2, 1)`.

Author:
  Andrew McCallum mccallum@cs.umass.edu
See Also:
  Serialized Form

Constructor Summary
`TokenSequenceMatchDataAndTarget(java.util.regex.Pattern regex, int dataGroup, int targetGroup)`
`TokenSequenceMatchDataAndTarget(java.lang.String regex, int dataGroup, int targetGroup)`

Method Summary
`Instance` | `pipe(Instance carrier)` Really this should be 'protected', but isn't for historical reasons.

Methods inherited from class cc.mallet.pipe.Pipe
`alphabetsMatch, getAlphabet, getAlphabets, getDataAlphabet, getInstanceId, getTargetAlphabet, instanceFrom, instancesFrom, instancesFrom, isDataAlphabetSet, isTargetProcessing, newIteratorFrom, preceedingPipeDataAlphabetNotification, preceedingPipeTargetAlphabetNotification, precondition, readResolve, setDataAlphabet, setOrCheckDataAlphabet, setOrCheckTargetAlphabet, setTargetAlphabet, setTargetProcessing`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### TokenSequenceMatchDataAndTarget

    public TokenSequenceMatchDataAndTarget(java.util.regex.Pattern regex,
                                           int dataGroup,
                                           int targetGroup)

### TokenSequenceMatchDataAndTarget

    public TokenSequenceMatchDataAndTarget(java.lang.String regex,
                                           int dataGroup,
                                           int targetGroup)

Method Detail

### pipe

    public Instance pipe(Instance carrier)

  Description copied from class: `Pipe`
  Really this should be 'protected', but isn't for historical reasons.

  Overrides:
    `pipe` in class `Pipe`

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD