CmaOptimizer [SCONE]

Optimizer based on the CMA-ES algorithm by [Hansen].

This is an abstract base class, use a derived class instead.

Inherits from Optimizer.

Parameter	Type	Description
mu_	int	Mu parameter of CMA-ES.
lambda_	int	Lambda parameter of CMA-ES.
sigma_	double	Initial Sigma parameter of CMA-ES.
window_size	size_t	Window size used for fitness prediction; default = 500.
random_seed	long	Random seed that will determine the randomness during the optimization.
flat_fitness_epsilon_	double	Epsilon value to detect flat fitness; default = 1e-6.
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; default = true.
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.
max_threads	size_t	Maximum number of threads to use for this optimization; default = 32.
thread_priority	int	Thread priority of the optimization; 0 = lowest, 7 = highest, default = 1.
max_generations	size_t	Number of iterations after which to stop the optimization; default = 10000.
min_progress	double	Minimum progress after which to stop the optimization; default = 1e-6.
min_progress_samples	size_t	Minimum number of samples after which progress is measured; default = 200.
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.
signature_prefix	String	Prefix signature with custom string. Special tags: DATE_TIME, DATE_TIME_EXACT, SCONE_VERSION.
signature_postfix	String	Append custom string to signature. Special tags: DATE_TIME, DATE_TIME_EXACT, SCONE_VERSION.

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CmaOptimizer

Public Attributes