CmaPoolOptimizer [SCONE]

Optimizer that runs multiple CMA-ES optimizations in a prioritized fashion, based on their predicted fitness.

The CmaPoolOptimizer can be used in place of a CmaOptimzer. Example usage:

CmaPoolOptimizer {
    optimizations = 12 # Total number of optimizations
    active_optimizations = 6 # Number of optimizations active at the same time

    SimulationObjective { ... }
}

Inherits from Optimizer.

Parameter	Type	Description
optimizations	size_t	Maximum total number of optimizations; default = 6.
active_optimizations	size_t	Maximum number of optimizations active at the same time; default = 6.
concurrent_optimizations	size_t	Maximum number of optimizations that are evaluated concurrently; default = 2.
use_predicted_fitness_stop_condition	bool	Terminate optimizations with a predicted fitness lower than the current best; default = 1.
random_seed	long	Random seed of the first optimization; default = 1.
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.
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 = “” (all).
init_file_exclude	String	Pattern matching the init_file parameters to exclude (semicolon seperated); default = “” (none).
init	ParInitSettings	Section with parameter initialization settings (.par), multiple allowed; see ParInitSettings for details.
max_threads	size_t	Maximum number of threads to use for this optimization (deprecated, use global settings instead); 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 = 100000.
min_progress	double	Minimum progress after which to stop the optimization; default = 1e-5.
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::log::level	Set the log level [1-7] for the optimization.log file (higher is less logging); default = 3.
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.
signature	String	Set custom signature and omit the auto-generated signature.

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CmaPoolOptimizer

Public Attributes