it.uniroma2.sag.kelp.utils

Class ExperimentUtils

java.lang.Object

it.uniroma2.sag.kelp.utils.ExperimentUtils

public class ExperimentUtils
extends Object

Class containing some useful methods for evaluating the performance of a learning algorithm

Author:

Simone Filice

Constructor Summary

Constructors

Constructor and Description
ExperimentUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static <T extends Evaluator> List<T>	nFoldCrossValidation(int nFold, LearningAlgorithm algorithm, SimpleDataset allData, T evaluator) Performs a n-fold cross validation
static List<Prediction>	test(PredictionFunction predictionFunction, Evaluator evaluator, Dataset testset) Evaluates a prediction function over a testset

Methods inherited from class java.lang.Object

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

Constructor Detail

ExperimentUtils

public ExperimentUtils()

Method Detail

test

public static List<Prediction> test(PredictionFunction predictionFunction,
                    Evaluator evaluator,
                    Dataset testset)

Evaluates a prediction function over a testset

Parameters:

predictionFunction - the prediction function to be evaluated

evaluator - the evaluator to be applied during the evaluation process

testset - the dataset of containing the test examples

Returns:

the predictions provided by the prediction function on the testset

nFoldCrossValidation

public static <T extends Evaluator> List<T> nFoldCrossValidation(int nFold,
                                                 LearningAlgorithm algorithm,
                                                 SimpleDataset allData,
                                                 T evaluator)

Performs a n-fold cross validation

Parameters:

nFold - the number of folds

algorithm - the learning algorithm to be validated

allData - the dataset to be exploited

evaluator - the evaluator to be applied during the evaluation process

Returns:

a list containing nFold evaluators, each one storing the evaluations computed on the corresponding fold