GPyOpt.core package¶
Submodules¶
GPyOpt.core.bo module¶
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class
GPyOpt.core.bo.
BO
(model, space, objective, acquisition, evaluator, X_init, Y_init=None, cost=None, normalize_Y=True, model_update_interval=1, de_duplication=False)¶ Bases:
object
Runner of Bayesian optimization loop. This class wraps the optimization loop around the different handlers. :param model: GPyOpt model class. :param space: GPyOpt space class. :param objective: GPyOpt objective class. :param acquisition: GPyOpt acquisition class. :param evaluator: GPyOpt evaluator class. :param X_init: 2d numpy array containing the initial inputs (one per row) of the model. :param Y_init: 2d numpy array containing the initial outputs (one per row) of the model. :param cost: GPyOpt cost class (default, none). :param normalize_Y: whether to normalize the outputs before performing any optimization (default, True). :param model_update_interval: interval of collected observations after which the model is updated (default, 1). :param de_duplication: GPyOpt DuplicateManager class. Avoids re-evaluating the objective at previous, pending or infeasible locations (default, False).
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evaluate_objective
()¶ Evaluates the objective
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get_evaluations
()¶
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plot_acquisition
(filename=None)¶ - Plots the model and the acquisition function.
- if self.input_dim = 1: Plots data, mean and variance in one plot and the acquisition function in another plot if self.input_dim = 2: as before but it separates the mean and variance of the model in two different plots
Parameters: filename – name of the file where the plot is saved
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plot_convergence
(filename=None)¶ - Makes twp plots to evaluate the convergence of the model:
- plot 1: Iterations vs. distance between consecutive selected x’s plot 2: Iterations vs. the mean of the current model in the selected sample.
Parameters: filename – name of the file where the plot is saved
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run_optimization
(max_iter=0, max_time=inf, eps=1e-08, context=None, verbosity=False, save_models_parameters=True, report_file=None, evaluations_file=None, models_file=None)¶ Runs Bayesian Optimization for a number ‘max_iter’ of iterations (after the initial exploration data)
Parameters: - max_iter – exploration horizon, or number of acquisitions. If nothing is provided optimizes the current acquisition.
- max_time – maximum exploration horizon in seconds.
- eps – minimum distance between two consecutive x’s to keep running the model.
- verbosity – flag to print the optimization results after each iteration (default, False).
- report_file – filename of the file where the results of the optimization are saved (default, None).
- context – fixes specified variables to a particular context (values) for the optimization run (default, None).
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save_evaluations
(evaluations_file=None)¶ Saves a report with the results of the iterations of the optimization
Parameters: evaluations_file – name of the file in which the results are saved.
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save_models
(models_file)¶ Saves a report with the results of the iterations of the optimization
Parameters: models_file – name of the file or a file buffer, in which the results are saved.
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save_report
(report_file=None)¶ Saves a report with the main resutls of the optimization.
Parameters: report_file – name of the file in which the results of the optimization are saved.
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suggest_next_locations
(context=None, pending_X=None, ignored_X=None)¶ Run a single optimization step and return the next locations to evaluate the objective. Number of suggested locations equals to batch_size.
Parameters: - context – fixes specified variables to a particular context (values) for the optimization run (default, None).
- pending_X – matrix of input configurations that are in a pending state (i.e., do not have an evaluation yet) (default, None).
- ignored_X – matrix of input configurations that the user black-lists, i.e., those configurations will not be suggested again (default, None).
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GPyOpt.core.errors module¶
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exception
GPyOpt.core.errors.
FullyExploredOptimizationDomainError
¶ Bases:
exceptions.Exception
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exception
GPyOpt.core.errors.
InvalidConfigError
¶ Bases:
exceptions.Exception
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exception
GPyOpt.core.errors.
InvalidVariableNameError
¶ Bases:
exceptions.Exception