public static boolean testCostAndGradient(Minimizable.ByGradient minable) {
Matrix parameters = minable.getNewMatrix();
parameters.setAll(0.0);
minable.setParameters(parameters);
testCostAndGradientCurrentParameters(minable);
parameters.setAll(0.0);
Matrix delta = minable.getNewMatrix();
minable.getCostGradient(delta);
delta.timesEquals(-0.0001);
parameters.plusEquals(delta);
minable.setParameters(parameters);
testCostAndGradientCurrentParameters(minable);
return true;
}
public static boolean testGetSetParameters(Minimizable minable) {
System.out.println("TestMinimizable testGetSetParameters");
// Set all the parameters to unique values using setParameters()
Matrix parameters = minable.getNewMatrix();
minable.getParameters(parameters);
for (int i = 0; i < parameters.singleSize(); i++) parameters.setSingleValue(i, (double) i);
minable.setParameters(parameters);
// Test to make sure those parameters are there
parameters.setAll(0.0);
minable.getParameters(parameters);
for (int i = 0; i < parameters.singleSize(); i++)
assertTrue(parameters.singleValue(i) == (double) i);
// Set all the parameters to unique values using setParameter()
parameters.setAll(0.0);
minable.setParameters(parameters);
int[] indices = new int[parameters.getNumDimensions()];
for (int i = 0; i < parameters.singleSize(); i++) {
parameters.singleToIndices(i, indices);
minable.setParameter(indices, (double) i);
}
// Test to make sure those parameters are there
parameters.setAll(0.0);
minable.getParameters(parameters);
for (int i = 0; i < parameters.singleSize(); i++) {
// System.out.println ("Got "+parameters.getSingle(i)+", expecting "+((double)i));
assertTrue(parameters.singleValue(i) == (double) i);
}
// Test to make sure they are also there when we look individually
for (int i = 0; i < parameters.singleSize(); i++) {
parameters.singleToIndices(i, indices);
assertTrue(minable.getParameter(indices) == (double) i);
}
return true;
}