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normalization: avoid division by zero for constant feature dimensions

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mschiegg 2014-10-31 13:40:10 +01:00
parent 585a3b00f8
commit 7bbb6c0f74
1 changed files with 1 additions and 0 deletions
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GPy/core/gp_base.py
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@ -29,6 +29,7 @@ class GPBase(Model):
if normalize_X:
self._Xoffset = X.mean(0)[None, :]
self._Xscale = X.std(0)[None, :]
self._Xscale[np.where(self._Xscale==0)] = 1
self.X = (X.copy() - self._Xoffset) / self._Xscale
else:
self._Xoffset = np.zeros((1, self.input_dim))