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authorChris Dyer <cdyer@cab.ark.cs.cmu.edu>2012-10-02 00:19:43 -0400
committerChris Dyer <cdyer@cab.ark.cs.cmu.edu>2012-10-02 00:19:43 -0400
commite26434979adc33bd949566ba7bf02dff64e80a3e (patch)
treed1c72495e3af6301bd28e7e66c42de0c7a944d1f /gi/posterior-regularisation/prjava/src/optimization/examples/x2y2.java
parent0870d4a1f5e14cc7daf553b180d599f09f6614a2 (diff)
cdec cleanup, remove bayesian stuff, parsing stuff
Diffstat (limited to 'gi/posterior-regularisation/prjava/src/optimization/examples/x2y2.java')
-rw-r--r--gi/posterior-regularisation/prjava/src/optimization/examples/x2y2.java128
1 files changed, 0 insertions, 128 deletions
diff --git a/gi/posterior-regularisation/prjava/src/optimization/examples/x2y2.java b/gi/posterior-regularisation/prjava/src/optimization/examples/x2y2.java
deleted file mode 100644
index f087681e..00000000
--- a/gi/posterior-regularisation/prjava/src/optimization/examples/x2y2.java
+++ /dev/null
@@ -1,128 +0,0 @@
-package optimization.examples;
-
-
-import optimization.gradientBasedMethods.ConjugateGradient;
-
-import optimization.gradientBasedMethods.GradientDescent;
-import optimization.gradientBasedMethods.LBFGS;
-import optimization.gradientBasedMethods.Objective;
-import optimization.gradientBasedMethods.stats.OptimizerStats;
-import optimization.linesearch.GenericPickFirstStep;
-import optimization.linesearch.LineSearchMethod;
-import optimization.linesearch.WolfRuleLineSearch;
-import optimization.stopCriteria.GradientL2Norm;
-import optimization.stopCriteria.StopingCriteria;
-
-
-/**
- * @author javg
- *
- */
-public class x2y2 extends Objective{
-
-
- //Implements function ax2+ by2
- double a, b;
- public x2y2(double a, double b){
- this.a = a;
- this.b = b;
- parameters = new double[2];
- parameters[0] = 4;
- parameters[1] = 4;
- gradient = new double[2];
- }
-
- public double getValue() {
- functionCalls++;
- return a*parameters[0]*parameters[0]+b*parameters[1]*parameters[1];
- }
-
- public double[] getGradient() {
- gradientCalls++;
- gradient[0]=2*a*parameters[0];
- gradient[1]=2*b*parameters[1];
- return gradient;
-// if(debugLevel >=2){
-// double[] numericalGradient = DebugHelpers.getNumericalGradient(this, parameters, 0.000001);
-// for(int i = 0; i < parameters.length; i++){
-// double diff = Math.abs(gradient[i]-numericalGradient[i]);
-// if(diff > 0.00001){
-// System.out.println("Numerical Gradient does not match");
-// System.exit(1);
-// }
-// }
-// }
- }
-
-
-
- public void optimizeWithGradientDescent(LineSearchMethod ls, OptimizerStats stats, x2y2 o){
- GradientDescent optimizer = new GradientDescent(ls);
- StopingCriteria stop = new GradientL2Norm(0.001);
-// optimizer.setGradientConvergenceValue(0.001);
- optimizer.setMaxIterations(100);
- boolean succed = optimizer.optimize(o,stats,stop);
- System.out.println("Ended optimzation Gradient Descent\n" + stats.prettyPrint(1));
- System.out.println("Solution: " + " x0 " + o.parameters[0]+ " x1 " + o.parameters[1]);
- if(succed){
- System.out.println("Ended optimization in " + optimizer.getCurrentIteration());
- }else{
- System.out.println("Failed to optimize");
- }
- }
-
- public void optimizeWithConjugateGradient(LineSearchMethod ls, OptimizerStats stats, x2y2 o){
- ConjugateGradient optimizer = new ConjugateGradient(ls);
- StopingCriteria stop = new GradientL2Norm(0.001);
-
- optimizer.setMaxIterations(10);
- boolean succed = optimizer.optimize(o,stats,stop);
- System.out.println("Ended optimzation Conjugate Gradient\n" + stats.prettyPrint(1));
- System.out.println("Solution: " + " x0 " + o.parameters[0]+ " x1 " + o.parameters[1]);
- if(succed){
- System.out.println("Ended optimization in " + optimizer.getCurrentIteration());
- }else{
- System.out.println("Failed to optimize");
- }
- }
-
- public void optimizeWithLBFGS(LineSearchMethod ls, OptimizerStats stats, x2y2 o){
- LBFGS optimizer = new LBFGS(ls,10);
- StopingCriteria stop = new GradientL2Norm(0.001);
- optimizer.setMaxIterations(10);
- boolean succed = optimizer.optimize(o,stats,stop);
- System.out.println("Ended optimzation LBFGS\n" + stats.prettyPrint(1));
- System.out.println("Solution: " + " x0 " + o.parameters[0]+ " x1 " + o.parameters[1]);
- if(succed){
- System.out.println("Ended optimization in " + optimizer.getCurrentIteration());
- }else{
- System.out.println("Failed to optimize");
- }
- }
-
- public static void main(String[] args) {
- x2y2 o = new x2y2(1,10);
- System.out.println("Starting optimization " + " x0 " + o.parameters[0]+ " x1 " + o.parameters[1]);
- o.setDebugLevel(4);
- LineSearchMethod wolfe = new WolfRuleLineSearch(new GenericPickFirstStep(1),0.001,0.9);;
-// LineSearchMethod ls = new ArmijoLineSearchMinimization();
- OptimizerStats stats = new OptimizerStats();
- o.optimizeWithGradientDescent(wolfe, stats, o);
- o = new x2y2(1,10);
- System.out.println("Starting optimization " + " x0 " + o.parameters[0]+ " x1 " + o.parameters[1]);
-// ls = new ArmijoLineSearchMinimization();
- stats = new OptimizerStats();
- o.optimizeWithConjugateGradient(wolfe, stats, o);
- o = new x2y2(1,10);
- System.out.println("Starting optimization " + " x0 " + o.parameters[0]+ " x1 " + o.parameters[1]);
-// ls = new ArmijoLineSearchMinimization();
- stats = new OptimizerStats();
- o.optimizeWithLBFGS(wolfe, stats, o);
- }
-
- public String toString(){
- return "P1: " + parameters[0] + " P2: " + parameters[1] + " value " + getValue();
- }
-
-
-}