apunkt/GPy
1
0
Fork 0
mirror of https://github.com/SheffieldML/GPy.git synced 2026-05-12 13:32:39 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

[exponential] fixed exponential *2 error

Browse source
This commit is contained in:
mzwiessele 2016-04-07 07:42:12 +01:00
parent e4d71bc8f6
commit bfd0ee0db2
2 changed files with 4 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

4
GPy/kern/src/sde_stationary.py
View file

@ -129,14 +129,14 @@ class sde_Exponential(Exponential):
"""
self.variance.gradient = gradients[0]
self.lengthscale.gradient = gradients[1] * 2.0
self.lengthscale.gradient = gradients[1]
def sde(self):
"""
Return the state space representation of the covariance.
"""
variance = float(self.variance.values)
lengthscale = float(self.lengthscale*2.0)
lengthscale = float(self.lengthscale)
F = np.array(((-1.0/lengthscale,),))
L = np.array(((1.0,),))

4
GPy/kern/src/stationary.py
View file

@ -315,10 +315,10 @@ class Exponential(Stationary):
super(Exponential, self).__init__(input_dim, variance, lengthscale, ARD, active_dims, name)
def K_of_r(self, r):
return self.variance * np.exp(-0.5 * r)
return self.variance * np.exp(-r)
def dK_dr(self, r):
return -0.5*self.K_of_r(r)
return -self.K_of_r(r)
# def sde(self):
# """