com.expleague.ml.CompositeTrans Maven / Gradle / Ivy
package com.expleague.ml;
import com.expleague.commons.math.vectors.MxTools;
import com.expleague.commons.math.Trans;
import com.expleague.commons.math.vectors.Mx;
import com.expleague.commons.math.vectors.Vec;
import org.jetbrains.annotations.Nullable;
import sun.reflect.generics.reflectiveObjects.NotImplementedException;
/**
* User: solar
* Date: 21.12.2010
* Time: 22:07:07
*/
public class CompositeTrans extends Trans.Stub {
public final F f;
public final G g;
public CompositeTrans(final F f, final G g) {
this.f = f;
this.g = g;
}
@Override
public int xdim() {
return g.xdim();
}
@Override
public int ydim() {
return f.ydim();
}
@Override
public Vec trans(final Vec x) {
return f.trans(g.trans(x));
}
@Nullable
@Override
public Trans gradient() {
return new Stub() {
@Override
public int xdim() {
return g.xdim();
}
@Override
public int ydim() {
return f.ydim() * f.xdim();
}
@Nullable
@Override
public Trans gradient() {
throw new NotImplementedException();
}
@Override
public Vec trans(final Vec x) {
return MxTools.multiply((Mx) f.gradient().trans(g.trans(x)), (Mx) g.gradient().trans(x));
}
};
}
}
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