Class Evaluator<T>

Namespace

NOpenNLP.Tools.Util.Eval

Assembly

NOpenNLP.Tools.dll

The Evaluator<T> is an abstract base class for evaluators.

Evaluation results are the arithmetic mean of the scores calculated for each reference sample.

public abstract class Evaluator<T> where T : class

Type Parameters

T

Inheritance

object

Evaluator<T>

Derived

ChunkerEvaluator

DocumentCategorizerEvaluator

LanguageDetectorEvaluator

LemmatizerEvaluator

TokenNameFinderEvaluator

ParserEvaluator

POSEvaluator

SentenceDetectorEvaluator

DetokenizerEvaluator

TokenizerEvaluator

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Constructors

Evaluator(params IEvaluationMonitor<T>?[]?)

protected Evaluator(params IEvaluationMonitor<T>?[]? aListeners)

Parameters

aListeners IEvaluationMonitor<T>[]

Methods

Evaluate(IObjectStream<T?>)

Reads all sample objects from the stream and evaluates each sample object with EvaluateSample(T) method.

public void Evaluate(IObjectStream<T?> samples)

Parameters

samples IObjectStream<T>

the stream of reference which should be evaluated.

Exceptions

IOException

IOException

EvaluateSample(T)

Evaluates the given reference object. The default implementation calls ProcessSample(T).

note: this method will be changed to private in the future. Implementations should override ProcessSample(T) instead. If this method is overridden, the implementation has to update the score after every invocation.

public virtual void EvaluateSample(T sample)

Parameters

sample T

the sample to be evaluated

ProcessSample(T)

Evaluates the given reference sample object.

The implementation has to update the score after every invocation.

protected abstract T ProcessSample(T reference)

Parameters

reference T

the reference sample.

Returns

T

the predicted sample