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gradients now lazy instantiated

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Max Zwiessele 2014-02-20 08:38:14 +00:00
parent 1c3fe0c51e
commit 46f59f9f64
2 changed files with 11 additions and 3 deletions
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11
GPy/core/parameterization/param.py
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@ -54,7 +54,7 @@ class Param(ObservableArray, Constrainable, Gradcheckable, Indexable, Parentable
obj._tied_to_me_ = SetDict()
obj._tied_to_ = []
obj._original_ = True
obj.gradient = None
obj._gradient_ = None
return obj
def __init__(self, name, input_array, default_constraint=None):
@ -76,10 +76,17 @@ class Param(ObservableArray, Constrainable, Gradcheckable, Indexable, Parentable
self._updated_ = getattr(obj, '_updated_', None)
self._original_ = getattr(obj, '_original_', None)
self._name = getattr(obj, 'name', None)
self.gradient = getattr(obj, 'gradient', None)
self._gradient_ = getattr(obj, '_gradient_', None)
self.constraints = getattr(obj, 'constraints', None)
self.priors = getattr(obj, 'priors', None)
@property
def gradient(self):
if self._gradient_ is None:
self._gradient_ = numpy.zeros(self._realshape_)
return self._gradient_
#===========================================================================
# Pickling operations
#===========================================================================