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-rw-r--r--gi/posterior-regularisation/prjava/src/optimization/gradientBasedMethods/AbstractGradientBaseMethod.java120
1 files changed, 0 insertions, 120 deletions
diff --git a/gi/posterior-regularisation/prjava/src/optimization/gradientBasedMethods/AbstractGradientBaseMethod.java b/gi/posterior-regularisation/prjava/src/optimization/gradientBasedMethods/AbstractGradientBaseMethod.java
deleted file mode 100644
index 2fcb7990..00000000
--- a/gi/posterior-regularisation/prjava/src/optimization/gradientBasedMethods/AbstractGradientBaseMethod.java
+++ /dev/null
@@ -1,120 +0,0 @@
-package optimization.gradientBasedMethods;
-
-import optimization.gradientBasedMethods.stats.OptimizerStats;
-import optimization.linesearch.DifferentiableLineSearchObjective;
-import optimization.linesearch.LineSearchMethod;
-import optimization.stopCriteria.StopingCriteria;
-import optimization.util.MathUtils;
-
-/**
- *
- * @author javg
- *
- */
-public abstract class AbstractGradientBaseMethod implements Optimizer{
-
- protected int maxNumberOfIterations=10000;
-
-
-
- protected int currentProjectionIteration;
- protected double currValue;
- protected double previousValue = Double.MAX_VALUE;;
- protected double step;
- protected double[] gradient;
- public double[] direction;
-
- //Original values
- protected double originalGradientL2Norm;
-
- protected LineSearchMethod lineSearch;
- DifferentiableLineSearchObjective lso;
-
-
- public void reset(){
- direction = null;
- gradient = null;
- previousValue = Double.MAX_VALUE;
- currentProjectionIteration = 0;
- originalGradientL2Norm = 0;
- step = 0;
- currValue = 0;
- }
-
- public void initializeStructures(Objective o,OptimizerStats stats, StopingCriteria stop){
- lso = new DifferentiableLineSearchObjective(o);
- }
- public void updateStructuresBeforeStep(Objective o,OptimizerStats stats, StopingCriteria stop){
- }
-
- public void updateStructuresAfterStep(Objective o,OptimizerStats stats, StopingCriteria stop){
- }
-
- public boolean optimize(Objective o,OptimizerStats stats, StopingCriteria stop){
- //Initialize structures
-
- stats.collectInitStats(this, o);
- direction = new double[o.getNumParameters()];
- initializeStructures(o, stats, stop);
- for (currentProjectionIteration = 1; currentProjectionIteration < maxNumberOfIterations; currentProjectionIteration++){
- //System.out.println("\tgradient descent iteration " + currentProjectionIteration);
- //System.out.print("\tparameters:" );
- //o.printParameters();
- previousValue = currValue;
- currValue = o.getValue();
- gradient = o.getGradient();
- if(stop.stopOptimization(o)){
- stats.collectFinalStats(this, o);
- return true;
- }
-
- getDirection();
- if(MathUtils.dotProduct(gradient, direction) > 0){
- System.out.println("Not a descent direction");
- System.out.println(" current stats " + stats.prettyPrint(1));
- System.exit(-1);
- }
- updateStructuresBeforeStep(o, stats, stop);
- lso.reset(direction);
- step = lineSearch.getStepSize(lso);
- //System.out.println("\t\tLeave with step: " + step);
- if(step==-1){
- System.out.println("Failed to find step");
- stats.collectFinalStats(this, o);
- return false;
- }
- updateStructuresAfterStep( o, stats, stop);
-// previousValue = currValue;
-// currValue = o.getValue();
-// gradient = o.getGradient();
- stats.collectIterationStats(this, o);
- }
- stats.collectFinalStats(this, o);
- return false;
- }
-
-
- public int getCurrentIteration() {
- return currentProjectionIteration;
- }
-
-
- /**
- * Method specific
- */
- public abstract double[] getDirection();
-
- public double getCurrentStep() {
- return step;
- }
-
-
-
- public void setMaxIterations(int max) {
- maxNumberOfIterations = max;
- }
-
- public double getCurrentValue() {
- return currValue;
- }
-}