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Changed kern.py so that X2 is correctly passed as None to the kern parts for dK_dX. Modified several kern parts so that dK_dX is correctly computed (factors of 2 missing). Removed spurious factors of 2 from gplvm, bcgplvm, sparse_gp and fitc code.

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This commit is contained in:
Neil Lawrence 2013-09-14 20:02:40 +01:00
parent 2e6cac0d34
commit 00d335444d
20 changed files with 259 additions and 68 deletions
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GPy/models/gplvm.py
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@ -61,7 +61,7 @@ class GPLVM(GP):
GP._set_params(self, x[self.X.size:])
def _log_likelihood_gradients(self):
dL_dX = 2.*self.kern.dK_dX(self.dL_dK, self.X)
dL_dX = self.kern.dK_dX(self.dL_dK, self.X)
return np.hstack((dL_dX.flatten(), GP._log_likelihood_gradients(self)))