sklearn.linear_model.BaseLinearRegressor.java Source code

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Here is the source code for sklearn.linear_model.BaseLinearRegressor.java

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/*
 * Copyright (c) 2015 Villu Ruusmann
 *
 * This file is part of JPMML-SkLearn
 *
 * JPMML-SkLearn is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JPMML-SkLearn is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with JPMML-SkLearn.  If not, see <http://www.gnu.org/licenses/>.
 */
package sklearn.linear_model;

import java.util.List;

import com.google.common.collect.Iterables;
import org.dmg.pmml.regression.RegressionModel;
import org.jpmml.converter.Schema;
import org.jpmml.sklearn.ClassDictUtil;
import sklearn.Regressor;

abstract public class BaseLinearRegressor extends Regressor {

    public BaseLinearRegressor(String module, String name) {
        super(module, name);
    }

    @Override
    public int getNumberOfFeatures() {
        int[] shape = getCoefShape();

        return shape[0];
    }

    @Override
    public boolean requiresContinuousInput() {
        return false;
    }

    @Override
    public RegressionModel encodeModel(Schema schema) {
        return RegressionModelUtil.encodeRegressionModel(getCoef(), Iterables.getOnlyElement(getIntercept()),
                schema);
    }

    public List<? extends Number> getCoef() {
        return (List) ClassDictUtil.getArray(this, "coef_");
    }

    public List<? extends Number> getIntercept() {
        return (List) ClassDictUtil.getArray(this, "intercept_");
    }

    private int[] getCoefShape() {
        return ClassDictUtil.getShape(this, "coef_", 1);
    }
}