Java Code Examples for org.apache.commons.math.exception.util.LocalizedFormats#INVALID_REGRESSION_OBSERVATION

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Example 1
Source File: MillerUpdatingRegression.java    From astor with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Adds an observation to the regression model
 * @param x the array with regressor values
 * @param y  the value of dependent variable given these regressors
 * @exception ModelSpecificationException if the length of {@code x} does not equal
 * the number of independent variables in the model
 */
public void addObservation(final double[] x, final double y) {

    if ((!this.hasIntercept && x.length != nvars) ||
           (this.hasIntercept && x.length + 1 != nvars)) {
        throw new ModelSpecificationException(LocalizedFormats.INVALID_REGRESSION_OBSERVATION,
                x.length, nvars);
    }
    if (!this.hasIntercept) {
        include(MathUtils.copyOf(x, x.length), 1.0, y);
    } else {
        double[] tmp = new double[x.length + 1];
        System.arraycopy(x, 0, tmp, 1, x.length);
        tmp[0] = 1.0;
        include(tmp, 1.0, y);
    }
    ++nobs;
    return;

}
Example 2
Source File: MillerUpdatingRegression.java    From astor with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Adds an observation to the regression model
 * @param x the array with regressor values
 * @param y  the value of dependent variable given these regressors
 * @exception ModelSpecificationException if the length of {@code x} does not equal
 * the number of independent variables in the model
 */
public void addObservation(final double[] x, final double y) {

    if ((!this.hasIntercept && x.length != nvars) ||
           (this.hasIntercept && x.length + 1 != nvars)) {
        throw new ModelSpecificationException(LocalizedFormats.INVALID_REGRESSION_OBSERVATION,
                x.length, nvars);
    }
    if (!this.hasIntercept) {
        include(MathUtils.copyOf(x, x.length), 1.0, y);
    } else {
        double[] tmp = new double[x.length + 1];
        System.arraycopy(x, 0, tmp, 1, x.length);
        tmp[0] = 1.0;
        include(tmp, 1.0, y);
    }
    ++nobs;
    return;

}