smac.model.gaussian_process.priors.tophat_prior

Classes

SoftTopHatPrior(lower_bound, upper_bound, ...)	Soft Tophat prior as it used in the original spearmint code.
TophatPrior(lower_bound, upper_bound[, seed])	Tophat prior as it used in the original spearmint code.

Interfaces

class smac.model.gaussian_process.priors.tophat_prior.SoftTopHatPrior(lower_bound, upper_bound, exponent, seed=0)

Bases: AbstractPrior

Soft Tophat prior as it used in the original spearmint code.

Parameters:

• lower_bound (float) – Lower bound of the prior. In original scale.

• upper_bound (float) – Upper bound of the prior. In original scale.

• exponent (float) – Exponent of the prior.

• seed (int, defaults to 0)

get_gradient(theta)

Computes the gradient of the prior with respect to theta. Internally, his method calls self._get_gradient.

Warning

Theta must be on the original scale.

Parameters:

theta (float) – Hyperparameter configuration in log space

Returns:

gradient – The gradient of the prior at theta.

Return type:

float

get_log_probability(theta)

Returns the log probability of theta. This method exponentiates theta and calls self._get_log_probability.

Warning

Theta must be on a log scale!

Parameters:

theta (float) – Hyperparameter configuration in log space.

Returns:

The log probability of theta

Return type:

float

property meta: dict[str, Any]

Returns the meta data of the created object.

class smac.model.gaussian_process.priors.tophat_prior.TophatPrior(lower_bound, upper_bound, seed=0)

Bases: AbstractPrior

Tophat prior as it used in the original spearmint code.

Parameters:

• lower_bound (float) – Lower bound of the prior. In original scale.

• upper_bound (float) – Upper bound of the prior. In original scale.

• seed (int, defaults to 0)

get_gradient(theta)

Computes the gradient of the prior with respect to theta. Internally, his method calls self._get_gradient.

Warning

Theta must be on the original scale.

Parameters:

theta (float) – Hyperparameter configuration in log space

Returns:

gradient – The gradient of the prior at theta.

Return type:

float

property meta: dict[str, Any]

Returns the meta data of the created object.

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