hex.genmodel.easy.EigenEncoder Maven / Gradle / Ivy
package hex.genmodel.easy;
import java.util.HashMap;
import java.util.Map;
public class EigenEncoder implements CategoricalEncoder {
private final String columnName;
private final int targetIndex;
private final Map domainMap;
private final double[] projectionEigenVec;
public EigenEncoder(String columnName, int targetIndex, String[] domainValues, double[] projectionEigenVec) {
this.columnName = columnName;
this.targetIndex = targetIndex;
domainMap = new HashMap<>();
for (int j = 0; j < domainValues.length; j++) {
domainMap.put(domainValues[j], j);
}
this.projectionEigenVec = projectionEigenVec;
}
@Override
public boolean encodeCatValue(String levelName, double[] rawData) {
Integer levelIndex = domainMap.get(levelName);
if (levelIndex == null)
return false;
rawData[targetIndex] = (float) this.projectionEigenVec[levelIndex]; // make it more reproducible by casting to float
return true;
}
@Override
public void encodeNA(double[] rawData) {
rawData[targetIndex] = Double.NaN;
}
}