org.tribuo.evaluation

Class OnlineEvaluator<T extends Output<T>,E extends Evaluation<T>>

java.lang.Object

org.tribuo.evaluation.OnlineEvaluator<T,E>

Type Parameters:

T - The output type.

E - The evaluation type.

public final class OnlineEvaluator<T extends Output<T>,E extends Evaluation<T>>
extends Object

An evaluator which aggregates predictions and produces Evaluations covering all the Predictions it has seen or created.

Constructor Summary

Constructors

Constructor and Description
OnlineEvaluator(Evaluator<T,E> evaluator, Model<T> model, DataProvenance provenance) Constructs an OnlineEvaluator which accumulates predictions.

Method Summary

Modifier and Type	Method and Description
E	evaluate() Creates an Evaluation containing all the current predictions.
void	observe(List<Prediction<T>> newPredictions) Records all the supplied predictions.
void	observe(Prediction<T> newPrediction) Records the supplied prediction.
Prediction<T>	predictAndObserve(Example<T> example) Feeds the example to the model, records the prediction and returns it.
List<Prediction<T>>	predictAndObserve(Iterable<Example<T>> examples) Feeds the examples to the model, records the predictions and returns them.

Methods inherited from class java.lang.Object

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

Constructor Detail

OnlineEvaluator

public OnlineEvaluator(Evaluator<T,E> evaluator,
                       Model<T> model,
                       DataProvenance provenance)

Constructs an OnlineEvaluator which accumulates predictions.

Parameters:

evaluator - The evaluator to use to make Evaluations.

model - The model to use.

provenance - The provenance of the evaluation data.

Method Detail

evaluate

public E evaluate()

Creates an Evaluation containing all the current predictions.

Returns:

An Evaluation of the appropriate type.

predictAndObserve

public Prediction<T> predictAndObserve(Example<T> example)

Feeds the example to the model, records the prediction and returns it.

Parameters:

example - The example to predict.

Returns:

The model prediction for this example.

predictAndObserve

public List<Prediction<T>> predictAndObserve(Iterable<Example<T>> examples)

Feeds the examples to the model, records the predictions and returns them.

Parameters:

examples - The examples to predict.

Returns:

The model predictions for the supplied examples.

observe

public void observe(Prediction<T> newPrediction)

Records the supplied prediction.

Parameters:

newPrediction - The prediction to record.

observe

public void observe(List<Prediction<T>> newPredictions)

Records all the supplied predictions.

Parameters:

newPredictions - The predictions to record.