#include <itkLBFGS2Optimizerv4.h>
Definition at line 33 of file itkLBFGS2Optimizerv4.h.
◆ LineSearchMethod
Enumerator |
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LINESEARCH_DEFAULT | The default algorithm (MoreThuente method).
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LINESEARCH_MORETHUENTE | MoreThuente method proposed by More and Thuente.
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LINESEARCH_BACKTRACKING_ARMIJO | Backtracking method with the Armijo condition. The backtracking method finds the step length such that it satisfies the sufficient decrease (Armijo) condition,
- f(x + a * d) <= f(x) + lbfgs_parameter_t::ftol * a * g(x)^T d,
where x is the current point, d is the current search direction, and a is the step length.
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LINESEARCH_BACKTRACKING | The backtracking method with the default (regular Wolfe) condition.
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LINESEARCH_BACKTRACKING_WOLFE | Backtracking method with regular Wolfe condition. The backtracking method finds the step length such that it satisfies both the Armijo condition (LINESEARCH_BACKTRACKING_ARMIJO) and the curvature condition,
- g(x + a * d)^T d >= lbfgs_parameter_t::wolfe * g(x)^T d,
where x is the current point, d is the current search direction, and a is the step length.
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LINESEARCH_BACKTRACKING_STRONG_WOLFE | Backtracking method with strong Wolfe condition. The backtracking method finds the step length such that it satisfies both the Armijo condition (LINESEARCH_BACKTRACKING_ARMIJO) and the following condition,
- |g(x + a * d)^T d| <= lbfgs_parameter_t::wolfe * |g(x)^T d|,
where x is the current point, d is the current search direction, and a is the step length.
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Definition at line 40 of file itkLBFGS2Optimizerv4.h.
The documentation for this class was generated from the following file: