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Fix: Found array with 0 sample(s) #743

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Fix: Found array with 0 sample(s) #743

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7 changes: 7 additions & 0 deletions imblearn/over_sampling/_smote.py
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Original file line number Diff line number Diff line change
Expand Up @@ -554,12 +554,19 @@ def _fit_resample(self, X, y):
support_vector = _safe_indexing(X, support_index)

self.nn_m_.fit(X)

prev_support_vector = support_vector

noise_bool = self._in_danger_noise(
self.nn_m_, support_vector, class_sample, y, kind="noise"
)
support_vector = _safe_indexing(
support_vector, np.flatnonzero(np.logical_not(noise_bool))
)

if len(support_vector) == 0:
support_vector = prev_support_vector

danger_bool = self._in_danger_noise(
self.nn_m_, support_vector, class_sample, y, kind="danger"
)
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