com.insightml.data.samples.ISamples.java Source code

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Here is the source code for com.insightml.data.samples.ISamples.java

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/*
 * Copyright (C) 2016 Stefan Hen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.insightml.data.samples;

import java.util.Random;

import org.apache.commons.math3.util.Pair;

public interface ISamples<S extends Sample, E> extends Iterable<S> {

    S get(int i);

    int getId(int i);

    int size();

    int numLabels();

    E[] expected(int labelIndex);

    double[] weights(int labelIndex);

    int numFeatures();

    String[] featureNames();

    double[][] features();

    int[][] orderedIndexes();

    ISamples<S, E> subset(int[] indexes);

    ISamples<S, E> subset(int from, int to);

    Pair<ISamples<S, E>, ISamples<S, E>> sample(double ratio, Random random);

    ISamples<S, E> filterFeatures(boolean[] keep);

    ISamples<S, E> sampleFeatures(double ratio, Random random);

    ISamples<S, E> randomize(Random random);

}