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Merge branch 'devel' into params

Browse source 
Conflicts:
	GPy/core/transformations.py
	GPy/kern/parts/kernpart.py
This commit is contained in:
Max Zwiessele 2013-09-20 17:20:46 +01:00
commit c2d217e72c
77 changed files with 3608 additions and 807 deletions
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4
GPy/core/transformations.py
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@ -18,9 +18,11 @@ class Transformation(object):
def gradfactor(self, f):
""" df_dx evaluated at self.f(x)=f"""
raise NotImplementedError
def initialize(self, f):
""" produce a sensible initial value for f(x)"""
raise NotImplementedError
def __str__(self):
raise NotImplementedError
@ -47,8 +49,6 @@ class Negative_logexp(Transformation):
return Logexp.finv(-f) # np.log(np.exp(-f) - 1.)
def gradfactor(self, f):
return -Logexp.gradfactor(-f)
#ef = np.exp(-f)
#return -(ef - 1.) / ef
def initialize(self, f):
return -Logexp.initialize(f) # np.abs(f)
def __str__(self):