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Craft duplicate check before insert

This commit is contained in:
coolneng 2021-04-20 18:14:41 +02:00
parent 5b63b993df
commit 6b67e6db34
Signed by: coolneng
GPG Key ID: 9893DA236405AF57
1 changed files with 8 additions and 1 deletions
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9
src/local_search.py
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@ -7,11 +7,18 @@ def get_first_random_solution(m, data):
return data.loc[random_indexes] return data.loc[random_indexes]
def element_in_dataframe(solution, element):
duplicates = solution.query(
f"(source == {element.source} and destination == {element.destination}) or (source == {element.destination} and destination == {element.source})"
)
return not duplicates.empty
def replace_worst_element(previous, data): def replace_worst_element(previous, data):
solution = previous.copy() solution = previous.copy()
worst_index = solution["distance"].astype(float).idxmin() worst_index = solution["distance"].astype(float).idxmin()
random_element = data.sample().squeeze() random_element = data.sample().squeeze()
while solution.isin(random_element.values.ravel()).any().any(): while element_in_dataframe(solution=solution, element=random_element):
random_element = data.sample().squeeze() random_element = data.sample().squeeze()
solution.loc[worst_index] = random_element solution.loc[worst_index] = random_element
return solution, worst_index return solution, worst_index