Acquisition Functions#
- pybads.acquisition_functions.acq_fcn_lcb.acq_fcn_lcb(xi, func_count: int, gp: GP, sqrt_beta=None)[source]#
Lower Confidence Bound (LCB) acquisition function. It retrieves the point at the lower confidence bound of the GP surrogate model.
- Parameters:
- xi: np.ndarray
Input points
- func_count: int
Number of function evaluations
- gp: GP
Gaussian process
- sqrt_beta: float
LCB parameter
- Returns:
- z: lower confidence bound
Point at the lower confidence bound
- f_mu: GP prediction at xi
GP prediction at z.
- f_s: GP variance
GP variance at z.