org.apache.commons.math3.optim.nonlinear.scalar.gradient
Interfaces 
Preconditioner
Classes 
NonLinearConjugateGradientOptimizer
NonLinearConjugateGradientOptimizer.BracketingStep
NonLinearConjugateGradientOptimizer.IdentityPreconditioner
Enums 
NonLinearConjugateGradientOptimizer.Formula