Target2BIOFormat (Mallet 2 API)

java.lang.Object
- cc.mallet.pipe.Pipe
- - cc.mallet.pipe.tsf.Target2BIOFormat

All Implemented Interfaces:

AlphabetCarrying, java.io.Serializable
```
public class Target2BIOFormat
extends Pipe
implements java.io.Serializable
```
Creates a LabelSequence out of a TokenSequence that is the target of an Instance. Labels are constructed out of each Token in the TokenSequence to conform with BIO format (Begin, Inside, Outside of Segment). Prepends a "B-" to Tokens that leave a background state and an "I-" to tags that have the same label as the previous Token. NOTE: This class assumes that subsequent identical tags belong to the same Segment. This means that you cannot have B B I, only B I I.

See Also:

Serialized Form

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Target2BIOFormat()
  
  Target2BIOFormat(java.lang.String background)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  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
  - Target2BIOFormat
```
public Target2BIOFormat()
```
  - Target2BIOFormat
```
public Target2BIOFormat(java.lang.String background)
```
    Parameters:
    
    background - represents Tokens that are not part of a target Segment.
- 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