ConstrainedForwardBackwardConfidenceEstimator (Mallet 2 API)

java.lang.Object
- cc.mallet.fst.confidence.TransducerConfidenceEstimator
- - cc.mallet.fst.confidence.ConstrainedForwardBackwardConfidenceEstimator

All Implemented Interfaces:

java.io.Serializable
```
public class ConstrainedForwardBackwardConfidenceEstimator
extends TransducerConfidenceEstimator
```
Estimates the confidence of a Segment extracted by a Transducer by performing a "constrained lattice" calculation. Essentially, this sums all possible ways this segment could have been extracted and normalizes.

See Also:

Serialized Form

Field Summary
- Fields inherited from class cc.mallet.fst.confidence.TransducerConfidenceEstimator
  model

Constructor Summary

Constructors
Constructor Description

ConstrainedForwardBackwardConfidenceEstimator(Transducer model)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`estimateConfidenceFor(Segment segment, SumLatticeDefault cachedLattice)`	Calculates the confidence in the tagging of a `Segment`.

Methods inherited from class cc.mallet.fst.confidence.TransducerConfidenceEstimator
estimateConfidenceFor, getSegmentConfidences, getTransducer, rankSegmentsByConfidence, rankSegmentsByConfidence

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

- Constructor Detail
  - ConstrainedForwardBackwardConfidenceEstimator
```
public ConstrainedForwardBackwardConfidenceEstimator(Transducer model)
```
- Method Detail
  - estimateConfidenceFor
```
public double estimateConfidenceFor(Segment segment,
                                    SumLatticeDefault cachedLattice)
```
    Calculates the confidence in the tagging of a Segment.
    
    Specified by:
    
    estimateConfidenceFor in class TransducerConfidenceEstimator
    
    Returns:
    
    0-1 confidence value. higher = more confident.