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small bugfix in white kernel

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This commit is contained in:
James Hensman 2015-04-02 22:37:32 +01:00
parent 592414ce64
commit a3679b9f61
1 changed files with 4 additions and 1 deletions
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3
GPy/kern/_src/static.py
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@ -60,7 +60,10 @@ class White(Static):
return np.zeros((Z.shape[0], Z.shape[0]), dtype=np.float64) return np.zeros((Z.shape[0], Z.shape[0]), dtype=np.float64)
def update_gradients_full(self, dL_dK, X, X2=None): def update_gradients_full(self, dL_dK, X, X2=None):
if X2 is None:
self.variance.gradient = np.trace(dL_dK) self.variance.gradient = np.trace(dL_dK)
else:
self.variance.gradient = 0.
def update_gradients_diag(self, dL_dKdiag, X): def update_gradients_diag(self, dL_dKdiag, X):
self.variance.gradient = dL_dKdiag.sum() self.variance.gradient = dL_dKdiag.sum()