Package org.tribuo.classification.sequence

Class ConfidencePredictingSequenceModel

java.lang.Object

org.tribuo.sequence.SequenceModel<Label>

org.tribuo.classification.sequence.ConfidencePredictingSequenceModel

All Implemented Interfaces:

com.oracle.labs.mlrg.olcut.provenance.Provenancable<ModelProvenance>, Serializable

Direct Known Subclasses:

CRFModel

public abstract class ConfidencePredictingSequenceModel
extends SequenceModel<Label>

A Sequence model which can provide confidence predictions for subsequence predictions.

Used to provide confidence scores on a per subsequence level.

The exemplar of this is providing a confidence score for each Named Entity present in a SequenceExample.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ConfidencePredictingSequenceModel.Subsequence	A range class used to define a subsequence of a SequenceExample.

Field Summary

Fields inherited from class org.tribuo.sequence.SequenceModel

featureIDMap, name, outputIDMap, provenanceOutput

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ConfidencePredictingSequenceModel(String name, ModelProvenance description, ImmutableFeatureMap featureIDMap, ImmutableOutputInfo<Label> labelIDMap)	Constructs a ConfidencePredictingSequenceModel with the supplied parameters.

Method Summary

Modifier and Type	Method	Description
static <SUB extends ConfidencePredictingSequenceModel.Subsequence> List<Double>	multiplyWeights(List<Prediction<Label>> predictions, List<SUB> subsequences)	A scoring method which multiplies together the per prediction scores.
abstract <SUB extends ConfidencePredictingSequenceModel.Subsequence> List<Double>	scoreSubsequences(SequenceExample<Label> example, List<Prediction<Label>> predictions, List<SUB> subsequences)	The scoring function for the subsequences.

Methods inherited from class org.tribuo.sequence.SequenceModel

getFeatureIDMap, getName, getOutputIDInfo, getProvenance, getTopFeatures, predict, predict, predict, setName, toMaxLabels, toString, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ConfidencePredictingSequenceModel

protected ConfidencePredictingSequenceModel(String name,
 ModelProvenance description,
 ImmutableFeatureMap featureIDMap,
 ImmutableOutputInfo<Label> labelIDMap)

Constructs a ConfidencePredictingSequenceModel with the supplied parameters.

Parameters:

name - The model name.

description - The model provenance.

featureIDMap - The feature domain.

labelIDMap - The output domain.

Method Details

scoreSubsequences

public abstract <SUB extends ConfidencePredictingSequenceModel.Subsequence>
List<Double> scoreSubsequences(SequenceExample<Label> example,
 List<Prediction<Label>> predictions,
 List<SUB> subsequences)

The scoring function for the subsequences. Provides the scores which should be assigned to each subsequence.

Type Parameters:

SUB - The subsequence type.

Parameters:

example - The input sequence example.

predictions - The predictions produced by this model.

subsequences - The subsequences to score.

Returns:

The scores for the subsequences.

multiplyWeights

public static <SUB extends ConfidencePredictingSequenceModel.Subsequence>
List<Double> multiplyWeights(List<Prediction<Label>> predictions,
 List<SUB> subsequences)

A scoring method which multiplies together the per prediction scores.

Type Parameters:

SUB - The subsequence type.

Parameters:

predictions - The element level predictions.

subsequences - The subsequences denoting prediction boundaries.

Returns:

A list of scores for each subsequence.