def expand_test2():
k1 = fk.MaskKernel(2, 0, fk.SqExpKernel(1, 1))
k2 = fk.MaskKernel(2, 1, fk.SqExpPeriodicKernel(2, 2, 2))
e = fk.SumKernel([k1, k2])
g = grammar.MultiDGrammar(2)
print ''
for f in grammar.expand(e, g):
print f.pretty_print()
print grammar.canonical(f).pretty_print()
print
print ' ***** duplicates removed *****'
print
kernels = grammar.expand(e, g)
for f in grammar.remove_duplicates(kernels):
print f.pretty_print()
print
print '%d originally, %d without duplicates' % (
len(kernels), len(grammar.remove_duplicates(kernels)))
print 'expand_test complete'
def expand_test():
k1 = fk.SqExpKernel(1, 1)
k2 = fk.SqExpPeriodicKernel(2, 2, 2)
e = fk.SumKernel([k1, k2])
g = grammar.OneDGrammar()
print ''
for f in grammar.expand(e, g):
#print f
print f.pretty_print()
print grammar.canonical(f).pretty_print()
print
print ' ***** duplicates removed *****'
print
kernels = grammar.expand(e, g)
for f in grammar.remove_duplicates(kernels):
print f.pretty_print()
print
print '%d originally, %d without duplicates' % (len(kernels), len(grammar.remove_duplicates(kernels)))
print 'expand_test complete'
def expand(self, base_kernels='SE'):
"""
Expand this kernel using grammar defined in grammar.py.
:returns: list of GPCKernel resulting from the expansion
"""
ndim = self.data.getDim()
g = grammar.MultiDGrammar(ndim, base_kernels=base_kernels, rules=None)
kernels = grammar.expand(self.kernel, g)
kernels = [k.canonical() for k in kernels]
kernels = ff.remove_duplicates(kernels)
for k in kernels:
k.initialise_params(data_shape=self.data.getDataShape())
kernels = [k.simplified() for k in kernels]
kernels = ff.remove_duplicates(kernels)
kernels = [k for k in kernels if not isinstance(k, ff.NoneKernel)]
kernels = [GPCKernel(k, self.data, depth=self.depth+1, parent=self) for k in kernels]
return kernels
def fear_expand_kernels(D, seed_kernels, verbose=False):
'''
Just expands
'''
g = grammar.MultiDGrammar(D)
print 'Seed kernels :'
for k in seed_kernels:
print k.pretty_print()
kernels = []
for k in seed_kernels:
kernels = kernels + grammar.expand(k, g)
kernels = grammar.remove_duplicates(kernels)
print 'Expanded kernels :'
for k in kernels:
print k.pretty_print()
return (kernels)
def fear_expand_kernels(D, seed_kernels, verbose=False):
'''
Just expands
'''
g = grammar.MultiDGrammar(D)
print 'Seed kernels :'
for k in seed_kernels:
print k.pretty_print()
kernels = []
for k in seed_kernels:
kernels = kernels + grammar.expand(k, g)
kernels = grammar.remove_duplicates(kernels)
print 'Expanded kernels :'
for k in kernels:
print k.pretty_print()
return (kernels)
def expand(self, base_kernels='SE'):
"""
Expand this kernel using grammar defined in grammar.py.
:returns: list of GPCKernel resulting from the expansion
"""
ndim = self.data.getDim()
g = grammar.MultiDGrammar(ndim, base_kernels=base_kernels, rules=None)
kernels = grammar.expand(self.kernel, g)
kernels = [k.canonical() for k in kernels]
kernels = ff.remove_duplicates(kernels)
for k in kernels:
k.initialise_params(data_shape=self.data.getDataShape())
kernels = [k.simplified() for k in kernels]
kernels = ff.remove_duplicates(kernels)
kernels = [k for k in kernels if not isinstance(k, ff.NoneKernel)]
kernels = [
GPCKernel(k, self.data, depth=self.depth + 1, parent=self)
for k in kernels
]
return kernels