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pyAgrum is a Python wrapper for the C++ aGrUM library

Project Description

pyAgrum

pyAgrum is a Python wrapper for the Agrum library, to make flexible and scalable probabilistic graphical models for inference and diagnosis.

Sample code:

import pyAgrum as gum

bn=gum.BayesNet('WaterSprinkler')
print(bn)

Example

import pyAgrum as gum

# Creating BayesNet with 4 variables
bn=gum.BayesNet('WaterSprinkler')
print(bn)
# Adding nodes the long way
c=bn.add(gum.LabelizedVariable('c','cloudy ?',2))
print(c)
# Adding nodes the short way
s, r, w = [ bn.add(name, 2) for name in "srw" ]
print (s,r,w)
print (bn)
# Addings arcs c -> s, c -> r, s -> w, r -> w
bn.addArc(c,s)
for link in [(c,r),(s,w),(r,w)]:
  bn.addArc(*link)
print(bn)
# Filling CPTs
bn.cpt(c).fillWith([0.5,0.5])
bn.cpt(s)[0,:]=0.5 # equivalent to [0.5,0.5]
bn.cpt(s)[1,:]=[0.9,0.1]
bn.cpt(w)[0,0,:] = [1, 0] # r=0,s=0
bn.cpt(w)[0,1,:] = [0.1, 0.9] # r=0,s=1
bn.cpt(w)[1,0,:] = [0.1, 0.9] # r=1,s=0
bn.cpt(w)[1,1,:] = [0.01, 0.99] # r=1,s=1
bn.cpt(r)[{'c':0}]=[0.8,0.2]
bn.cpt(r)[{'c':1}]=[0.2,0.8]
# Saving BN as a BIF file
gum.saveBN(bn,"WaterSprinkler.bif")
# Loading BN from a BIF file
bn2=gum.loadBN("WaterSprinkler.bif")
# Inference
ie=gum.LazyPropagation(bn)
ie.makeInference()
print (ie.posterior(w))
# Adding evidence
ie.setEvidence({'s': 1, 'c': 0})
ie.makeInference()
print(ie.posterior(w))
ie.setEvidence({'s': [0, 1], 'c': [1, 0]})
ie.makeInference()
print(ie.posterior(w))

LICENSE

Copyright (C) 2005 by Pierre-Henri WUILLEMIN et Christophe GONZALES {prenom.nom}_at_lip6.fr

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

Authors

  • Pierre-Henri Wuillemin
  • Christophe Gonzales

Maintainers

  • Lionel Torti
Release History

Release History

History Node

0.12.0.3

History Node

0.12.0.1

History Node

0.12.0

History Node

0.11.2

History Node

0.11.1.9

History Node

0.10.4.3

History Node

0.10.3.4

This version
History Node

0.10.1.1

History Node

0.10.0.1

History Node

0.9.3.7

History Node

0.9.3.6

History Node

0.9.3.5

History Node

0.9.3.4

Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pyagrum-0.10.1.1-cp27-cp27m-macosx_10_12_intel.whl (11.7 MB) Copy SHA256 Checksum SHA256 cp27 Wheel Dec 13, 2016
pyagrum-0.10.1.1-cp35-cp35m-macosx_10_11_x86_64.whl (7.9 MB) Copy SHA256 Checksum SHA256 cp35 Wheel Dec 13, 2016
pyagrum-0.10.1.1-cp35-cp35m-win32.whl (4.8 MB) Copy SHA256 Checksum SHA256 cp35 Wheel Dec 14, 2016
pyagrum-0.10.1.1-cp35-cp35m-win_amd64.whl (5.2 MB) Copy SHA256 Checksum SHA256 cp35 Wheel Dec 14, 2016
pyagrum-0.10.1.1.tar.gz (2.1 MB) Copy SHA256 Checksum SHA256 Source Dec 13, 2016

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