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This commit is contained in:
James Hensman 2013-04-29 12:11:36 +01:00
parent 5fca43f980
commit 50a68e1a65
2 changed files with 6 additions and 5 deletions
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6
GPy/models/GPLVM.py
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@ -1,4 +1,4 @@
# Copyright (c) 2012, GPy authors (see AUTHORS.txt).
### Copyright (c) 2012, GPy authors (see AUTHORS.txt).
# Licensed under the BSD 3-clause license (see LICENSE.txt)
@ -91,8 +91,8 @@ class GPLVM(GP):
Xtest_full[:, :2] = Xtest
mu, var, low, up = self.predict(Xtest_full)
var = var[:, :1]
ax.imshow(var.reshape(resolution, resolution).T[::-1, :],
extent=[xmin[0], xmax[0], xmin[1], xmax[1]], cmap=pb.cm.binary,interpolation='bilinear')
ax.imshow(var.reshape(resolution, resolution).T,
extent=[xmin[0], xmax[0], xmin[1], xmax[1]], cmap=pb.cm.binary,interpolation='bilinear',origin='lower')
for i,ul in enumerate(np.unique(labels)):
if type(ul) is np.string_:

5
GPy/models/sparse_GP.py
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@ -102,13 +102,14 @@ class sparse_GP(GP):
tmp = linalg.lapack.flapack.dtrtrs(self.Lm,np.asfortranarray(self.Bi),lower=1,trans=1)[0]
self.C = linalg.lapack.flapack.dtrtrs(self.Lm,np.asfortranarray(tmp.T),lower=1,trans=1)[0]
#self.Cpsi1V = np.dot(self.C,self.psi1V)
#back substutue C into psi1V
tmp,info1 = linalg.lapack.flapack.dtrtrs(self.Lm,np.asfortranarray(self.psi1V),lower=1,trans=0)
tmp,info2 = linalg.lapack.flapack.dpotrs(self.LB,tmp,lower=1)
self.Cpsi1V,info3 = linalg.lapack.flapack.dtrtrs(self.Lm,tmp,lower=1,trans=1)
#self.Cpsi1V = np.dot(self.C,self.psi1V)
self.Cpsi1VVpsi1 = np.dot(self.Cpsi1V,self.psi1V.T)
self.Cpsi1VVpsi1 = np.dot(self.Cpsi1V,self.psi1V.T) #TODO: stabilize?
self.E = tdot(self.Cpsi1V/sf)