ParametersFloat.java
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package is2.data;
import is2.util.DB;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
final public class ParametersFloat {
public float[] parameters;
public float[] total;
public ParametersFloat(int size) {
parameters = new float[size];
total = new float[size];
for(int i = 0; i < parameters.length; i++) {
parameters[i] = 0F;
total[i] = 0F;
}
}
/**
* @param parameters2
*/
public ParametersFloat(float[] p) {
parameters =p;
}
public void average(double avVal) {
for(int j = 0; j < total.length; j++) {
parameters[j] = total[j]/((float)avVal);
}
total =null;
}
public ParametersFloat average2(double avVal) {
float[] px = new float[this.parameters.length];
for(int j = 0; j < total.length; j++) {
px[j] = total[j]/((float)avVal);
}
ParametersFloat pf = new ParametersFloat(px);
return pf;
}
public void update(FV pred, FV act, float upd, float err) {
float lam_dist = act.getScore(parameters,false)- pred.getScore(parameters,false);
float loss =(float)err - lam_dist;
FV dist = act.getDistVector(pred);
float alpha;
float A = dist.dotProduct(dist);
if (A<=0.0000000000000001) alpha=0.0f;
else alpha= loss/A;
// alpha = Math.min(alpha, 0.00578125F);
dist.update(parameters, total, alpha, upd,false);
}
public void update(FV pred, FV act, float upd, float err, float C) {
float lam_dist = act.getScore(parameters,false)- pred.getScore(parameters,false);
float loss =(float)err - lam_dist;
FV dist = act.getDistVector(pred);
float alpha;
float A = dist.dotProduct(dist);
if (A<=0.0000000000000001) alpha=0.0f;
else alpha= loss/A;
alpha = Math.min(alpha, C);
dist.update(parameters, total, alpha, upd,false);
}
public double update(FV a, double b) {
double A = a.dotProduct(a);
if (A<=0.0000000000000000001) return 0.0;
return b/A;
}
public double getScore(FV fv) {
if (fv ==null) return 0.0F;
return fv.getScore(parameters,false);
}
final public void write(DataOutputStream dos) throws IOException{
dos.writeInt(parameters.length);
for(float d : parameters) dos.writeFloat(d);
}
public void read(DataInputStream dis) throws IOException{
parameters = new float[dis.readInt()];
int notZero=0;
for(int i=0;i<parameters.length;i++) {
parameters[i]=dis.readFloat();
if (parameters[i]!=0.0F) notZero++;
}
DB.println("read parameters "+parameters.length+" not zero "+notZero);
}
public int countNZ() {
int notZero=0;
for(int i=0;i<parameters.length;i++) {
if (parameters[i]!=0.0F) notZero++;
}
return notZero;
}
public F2SF getFV() {
return new F2SF(parameters);
}
public int size() {
return parameters.length;
}
public void update(FVR act, FVR pred, Instances isd, int instc, Parse dx, double upd, double e, float lam_dist) {
e++;
float b = (float)e-lam_dist;
FVR dist = act.getDistVector(pred);
dist.update(parameters, total, hildreth(dist,b), upd,false);
}
public void update(FVR pred, FVR act, float upd, float e) {
e++;
float lam_dist = act.getScore(parameters,false)- pred.getScore(parameters,false);
float b = (float)e-lam_dist;
FVR dist = act.getDistVector(pred);
dist.update(parameters, total, hildreth(dist,b), upd,false);
}
protected double hildreth(FVR a, double b) {
double A = a.dotProduct(a);
if (A<=0.0000000000000000001) return 0.0;
return b/A;
}
public float getScore(FVR fv) { //xx
if (fv ==null) return 0.0F;
return fv.getScore(parameters,false);
}
}