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Return GridSearch suggestions in random order. #101

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Return GridSearch suggestions in random order. #101

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6 changes: 5 additions & 1 deletion sherpa/algorithms/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -332,19 +332,23 @@ class GridSearch(Algorithm):

Args:
num_grid_points (int): number of grid points for continuous / discrete.
random_order (bool): If true, return suggestions in random order.

"""
allows_repetition = True

def __init__(self, num_grid_points=2):
def __init__(self, num_grid_points=2, random_order=True):
self.grid = None
self.num_grid_points = num_grid_points
self.count = 0 # number of sampled configs
self.random_order = random_order

def get_suggestion(self, parameters, results=None, lower_is_better=True):
if self.count == 0:
param_dict = self._get_param_dict(parameters)
self.grid = list(sklearn.model_selection.ParameterGrid(param_dict))
if self.random_order:
random.shuffle(self.grid)

if self.count >= len(self.grid):
return AlgorithmState.DONE
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