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some tifying in the models classes
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6 changed files with 15 additions and 26 deletions
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@ -22,8 +22,12 @@ class Bernoulli(Likelihood):
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.. See also::
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likelihood.py, for the parent class
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"""
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def __init__(self, gp_link=None, analytical_mean=False, analytical_variance=False):
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super(Bernoulli, self).__init__(gp_link, analytical_mean, analytical_variance)
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def __init__(self, gp_link=None):
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if gp_link is None:
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gp_link = link_functions.Probit()
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super(Bernoulli, self).__init__(gp_link, 'Bernoulli')
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if isinstance(gp_link , (link_functions.Heaviside, link_functions.Probit)):
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self.log_concave = True
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@ -1,7 +1,7 @@
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# Copyright (c) 2013, Ricardo Andrade
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# Copyright (c) 2013, the GPy Authors (see AUTHORS.txt)
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# Licensed under the BSD 3-clause license (see LICENSE.txt)
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import numpy as np
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from ..core import GP
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from .. import likelihoods
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@ -15,27 +15,16 @@ class GPClassification(GP):
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:param X: input observations
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:param Y: observed values, can be None if likelihood is not None
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:param likelihood: a GPy likelihood, defaults to Binomial with probit link_function
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:param kernel: a GPy kernel, defaults to rbf
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:param normalize_X: whether to normalize the input data before computing (predictions will be in original scales)
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:type normalize_X: False|True
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:param normalize_Y: whether to normalize the input data before computing (predictions will be in original scales)
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:type normalize_Y: False|True
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.. Note:: Multiple independent outputs are allowed using columns of Y
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"""
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def __init__(self,X,Y=None,likelihood=None,kernel=None,normalize_X=False,normalize_Y=False):
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def __init__(self, X, Y, kernel=None):
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if kernel is None:
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kernel = kern.rbf(X.shape[1])
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if likelihood is None:
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noise_model = likelihoods.binomial()
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likelihood = likelihoods.EP(Y, noise_model)
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elif Y is not None:
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if not all(Y.flatten() == likelihood.data.flatten()):
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raise Warning, 'likelihood.data and Y are different.'
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likelihood = likelihoods.Bernoulli()
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GP.__init__(self, X, likelihood, kernel, normalize_X=normalize_X)
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self.ensure_default_constraints()
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GP.__init__(self, X=X, Y=Y, kernel=kernel, likelihood=likelihood, name='gp_classification')
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@ -1,7 +1,6 @@
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# Copyright (c) 2013, Ricardo Andrade
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# Licensed under the BSD 3-clause license (see LICENSE.txt)
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import numpy as np
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from ..core import GP
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from .. import likelihoods
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@ -22,6 +22,7 @@ class GPRegression(GP):
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"""
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def __init__(self, X, Y, kernel=None):
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if kernel is None:
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kernel = kern.rbf(X.shape[1])
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@ -1,8 +1,6 @@
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'''
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Created on 17 Jul 2013
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# ## Copyright (c) 2012, GPy authors (see AUTHORS.txt).
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# Licensed under the BSD 3-clause license (see LICENSE.txt)
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@author: maxz
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'''
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from GPy.core.model import Model
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import itertools
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import numpy
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@ -1,8 +1,6 @@
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'''
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Created on 10 Apr 2013
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# ## Copyright (c) 2013, GPy authors (see AUTHORS.txt).
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# Licensed under the BSD 3-clause license (see LICENSE.txt)
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@author: Max Zwiessele
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'''
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from GPy.core import Model
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from GPy.core import SparseGP
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from GPy.util.linalg import PCA
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