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+ | ====== CmaOptimizer ====== | ||
+ | [[optimizer|Optimizer]] based on the CMA-ES algorithm by [Hansen]. | ||
+ | |||
+ | **Inherits from** [[es_optimizer|EsOptimizer]]. | ||
+ | |||
+ | ==== Public Attributes ==== | ||
+ | ^ Parameter ^ Type ^ Description ^ | ||
+ | ^ max_errors | int | Maximum number of errors allowed during evaluation, use a negative value equates to '' | ||
+ | ^ lambda | int | Lambda parameter (population size); default = automatic. | | ||
+ | ^ mu | int | Mu parameter (offspring size); default = automatic. | | ||
+ | ^ sigma | double | Sigma parameter (step size); default = automatic. | | ||
+ | ^ random_seed | long | Random seed used by the optimizer; default = 123. | | ||
+ | ^ flat_fitness_epsilon | double | Epsilon value to detect flat fitness; default = 1e-6. | | ||
+ | ^ enable_boundary_transformer | bool | Enable boundary transformer (experimental); | ||
+ | ^ init_file | path | Parameter file (.par) to be used for initial parameter values. | | ||
+ | ^ use_init_file | bool | Use init_file (if exists); default = true. | | ||
+ | ^ use_init_file_std | bool | Use the standard deviations from the init_file; when set to false, the initial standard deviation is computed as follows: STDEV = parameter value * init_file_std_factor + init_file_std_offset; | ||
+ | ^ use_init_file_best_as_mean | bool | Use values from the first column of the .par file (generation best) as mean; default = false. | | ||
+ | ^ init_file_std_factor | double | Factor by which to multiply the standard deviations from the init_file; default = 1.0. | | ||
+ | ^ init_file_std_offset | double | Offset added to the standard deviations from init_file; default = 0. | | ||
+ | ^ init_file_include | String | Pattern matching the init_file parameters to include (semicolon seperated); default = "" | ||
+ | ^ init_file_exclude | String | Pattern matching the init_file parameters to exclude (semicolon seperated); default = "" | ||
+ | ^ init | [[par_init_settings|ParInitSettings]] | Section with parameter initialization settings (.par), multiple allowed; see [[par_init_settings|ParInitSettings]] for details. | | ||
+ | ^ max_threads | size_t | Maximum number of threads to use for this optimization (deprecated, | ||
+ | ^ thread_priority | int | Thread priority of the optimization; | ||
+ | ^ max_generations | size_t | Number of iterations after which to stop the optimization; | ||
+ | ^ min_progress | double | Minimum progress after which to stop the optimization; | ||
+ | ^ min_progress_samples | size_t | Minimum number of samples after which progress is measured; default = 200. | | ||
+ | ^ window_size | size_t | Window size used for measureing progress; default = 500. | | ||
+ | ^ min_improvement_for_file_output | Real | The minimum relative improvement needed for file output; default = 0.05. | | ||
+ | ^ max_generations_without_file_output | size_t | The maximum number of iterations without file output; default = 1000. | | ||
+ | ^ target_fitness | double | Target fitness value, stop optimization if better; default = not set. | | ||
+ | ^ log_level | xo:: | ||
+ | ^ signature_prefix | String | Prefix signature with custom string. Special tags: DATE_TIME, DATE_TIME_EXACT, | ||
+ | ^ signature_postfix | String | Append custom string to signature. Special tags: DATE_TIME, DATE_TIME_EXACT, | ||
+ | ^ signature | String | Set custom signature and omit the auto-generated signature. | | ||
+ | |||
+ | < | ||