| Package | Description | 
|---|---|
| org.hipparchus.optim.nonlinear.scalar.gradient | This package provides optimization algorithms that require derivatives. | 
| Modifier and Type | Method and Description | 
|---|---|
| static NonLinearConjugateGradientOptimizer.Formula | NonLinearConjugateGradientOptimizer.Formula. valueOf(String name)Returns the enum constant of this type with the specified name. | 
| static NonLinearConjugateGradientOptimizer.Formula[] | NonLinearConjugateGradientOptimizer.Formula. values()Returns an array containing the constants of this enum type, in
the order they are declared. | 
| Constructor and Description | 
|---|
| NonLinearConjugateGradientOptimizer(NonLinearConjugateGradientOptimizer.Formula updateFormula,
                                   ConvergenceChecker<PointValuePair> checker)Constructor with default tolerances for the line search (1e-8) and
  preconditioner. | 
| NonLinearConjugateGradientOptimizer(NonLinearConjugateGradientOptimizer.Formula updateFormula,
                                   ConvergenceChecker<PointValuePair> checker,
                                   double relativeTolerance,
                                   double absoluteTolerance,
                                   double initialBracketingRange)Constructor with default  preconditioner. | 
| NonLinearConjugateGradientOptimizer(NonLinearConjugateGradientOptimizer.Formula updateFormula,
                                   ConvergenceChecker<PointValuePair> checker,
                                   double relativeTolerance,
                                   double absoluteTolerance,
                                   double initialBracketingRange,
                                   Preconditioner preconditioner) | 
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