def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.instance = DiscreteBayesianNetwork(skel, nodedata)
def set_bayesnet(self):
nd = NodeData()
skel = GraphSkeleton()
nd.load(self.file)
skel.load(self.file)
skel.toporder()
self.bn = DiscreteBayesianNetwork(skel, nd)
def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.instance = DiscreteBayesianNetwork(skel, nodedata)
def setUp(self):
nodedata = NodeData()
nodedata.load("unittestlgdict.txt")
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
self.lgb = LGBayesianNetwork(skel, nodedata)
def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.bn = DiscreteBayesianNetwork(skel, nodedata)
self.fn = TableCPDFactorization(self.bn)
def setUp(self):
nodedata = NodeData()
nodedata.load("unittestlgdict.txt")
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
self.lgb = LGBayesianNetwork(skel, nodedata)
def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.bn = DiscreteBayesianNetwork(skel, nodedata)
self.fn = TableCPDFactorization(self.bn)
def getTableCPD():
nd = NodeData()
skel = GraphSkeleton()
jsonpath = ""
nd.load(jsonpath)
skel.load(jsonpath)
bn = DiscreteBayesianNetwork(skel, nd)
tablecpd = TableCPDFactorization(bn)
return tablecpd
def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.instance = DiscreteBayesianNetwork(skel, nodedata)
self.factor = TableCPDFactor("Grade", self.instance)
self.factor2 = TableCPDFactor("Letter", self.instance)
class TestNodeData(unittest.TestCase):
def setUp(self):
self.nd = NodeData()
def test_entriestoinstances(self):
self.nd.load("unittesthdict.txt")
self.nd.entriestoinstances()
result = self.nd.nodes["Intelligence"].choose([])
self.assertTrue(result == 'low' or result == 'high')
def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.instance = DiscreteBayesianNetwork(skel, nodedata)
self.factor = TableCPDFactor("Grade", self.instance)
self.factor2 = TableCPDFactor("Letter", self.instance)
def getTableCPD():
nd = NodeData()
skel = GraphSkeleton()
jsonpath = "./graph/graph_example.txt"
nd.load(jsonpath)
skel.load(jsonpath)
# load Bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
tablecpd = TableCPDFactorization(bn)
return tablecpd
class TestNodeData(unittest.TestCase):
def setUp(self):
self.nd = NodeData()
def test_entriestoinstances(self):
self.nd.load("unittesthdict.txt")
self.nd.entriestoinstances()
result = self.nd.nodes["Intelligence"].choose([])
self.assertTrue(result == 'low' or result == 'high')
def load(self, file_name):
#### Load BN
nd = NodeData()
skel = GraphSkeleton()
nd.load(file_name) # any input file
skel.load(file_name)
# topologically order graphskeleton
skel.toporder()
super(DiscreteBayesianNetworkExt, self).__init__(skel, nd)
def getTableCPD(): nd = NodeData() skel = GraphSkeleton() jsonpath = "job_interview.txt" nd.load(jsonpath) skel.load(jsonpath) #load bayesian network bn = DiscreteBayesianNetwork(skel, nd) tablecpd = TableCPDFactorization(bn) return tablecpd
def test_query(self):
teacher_nd = NodeData()
teacher_nd.load(self.teacher_data_path)
req = DiscreteQueryRequest()
req.nodes = U.discrete_nodes_to_ros(teacher_nd.Vdata)
req.evidence = [DiscreteNodeState("Letter", "weak")]
req.query = ["Grade"]
res = self.query(req)
self.assertEqual(len(res.nodes), 1)
n = res.nodes[0]
self.assertEqual(n.name, "Grade")
self.assertListEqual(['A','B','C'], n.outcomes)
def test_query(self):
teacher_nd = NodeData()
teacher_nd.load(self.teacher_data_path)
req = DiscreteQueryRequest()
req.nodes = U.discrete_nodes_to_ros(teacher_nd.Vdata)
req.evidence = [DiscreteNodeState("Letter", "weak")]
req.query = ["Grade"]
res = self.query(req)
self.assertEqual(len(res.nodes), 1)
n = res.nodes[0]
self.assertEqual(n.name, "Grade")
self.assertListEqual(['A', 'B', 'C'], n.outcomes)
def load(self, file_name):
#### Load BN
nd = NodeData()
skel = GraphSkeleton()
nd.load(file_name) # any input file
skel.load(file_name)
# topologically order graphskeleton
skel.toporder()
super(DiscreteBayesianNetworkExt, self).__init__(skel, nd)
##TODO load evidence
def loadbn(param_file):
"""
This function loads the bn model into the workspace from its associated .txt file.
"""
file_path = os.path.join(experiment_dir, 'parameters', param_file + '.txt')
nd = NodeData()
skel = GraphSkeleton()
nd.load(file_path)
skel.load(file_path)
skel.toporder()
bn = DiscreteBayesianNetwork(skel, nd)
return bn
class TestDynDiscBayesianNetwork(unittest.TestCase):
def setUp(self):
self.nd = NodeData()
self.nd.load("unittestdyndict.txt")
self.skel = GraphSkeleton()
self.skel.load("unittestdyndict.txt")
self.skel.toporder()
self.d = DynDiscBayesianNetwork(self.skel, self.nd)
def test_randomsample(self):
sample = self.d.randomsample(10)
for i in range(1, 10):
self.assertEqual(sample[0]['Difficulty'], sample[i]['Difficulty'])
class TestDynDiscBayesianNetwork(unittest.TestCase):
def setUp(self):
self.nd = NodeData()
self.nd.load("unittestdyndict.txt")
self.skel = GraphSkeleton()
self.skel.load("unittestdyndict.txt")
self.skel.toporder()
self.d = DynDiscBayesianNetwork(self.skel, self.nd)
def test_randomsample(self):
sample = self.d.randomsample(10)
for i in range(1, 10):
self.assertEqual(sample[0]['Difficulty'], sample[i]['Difficulty'])
class TestHyBayesianNetwork(unittest.TestCase):
def setUp(self):
self.nd = NodeData()
self.nd.load("unittesthdict.txt")
self.nd.entriestoinstances()
self.skel = GraphSkeleton()
self.skel.load("unittestdict.txt")
self.skel.toporder()
self.hybn = HyBayesianNetwork(self.skel, self.nd)
def test_randomsample(self):
sample = self.hybn.randomsample(1)[0]
self.assertTrue(isinstance(sample['Grade'], float))
self.assertTrue(isinstance(sample['Intelligence'], str))
self.assertEqual(sample["SAT"][-12:], 'blueberries!')
def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.bn = DiscreteBayesianNetwork(skel, nodedata)
agg = SampleAggregator()
agg.aggregate(self.bn.randomsample(50))
self.rseq = agg.seq
self.ravg = agg.avg
self.fn = TableCPDFactorization(self.bn)
evidence = dict(Letter='weak')
agg.aggregate(self.fn.gibbssample(evidence, 51))
self.gseq = agg.seq
self.gavg = agg.avg
def createData(): nd = NodeData() skel = GraphSkeleton() fpath = "job_interview.txt" nd.load(fpath) skel.load(fpath) skel.toporder() bn = DiscreteBayesianNetwork(skel, nd) learner = PGMLearner() data = bn.randomsample(1000) X, Y = 'Grades', 'Offer' c,p,w=learner.discrete_condind(data, X, Y, ['Interview']) print "independence between X and Y: ", c, " p-value ", p, " witness node: ", w result = learner.discrete_constraint_estimatestruct(data) print result.E
def setUp(self):
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
nodedata = NodeData()
nodedata.load("unittestdict.txt")
self.bn = DiscreteBayesianNetwork(skel, nodedata)
agg = SampleAggregator()
agg.aggregate(self.bn.randomsample(50))
self.rseq = agg.seq
self.ravg = agg.avg
self.fn = TableCPDFactorization(self.bn)
evidence = dict(Letter='weak')
agg.aggregate(self.fn.gibbssample(evidence, 51))
self.gseq = agg.seq
self.gavg = agg.avg
class TestHyBayesianNetwork(unittest.TestCase):
def setUp(self):
self.nd = NodeData()
self.nd.load("unittesthdict.txt")
self.nd.entriestoinstances()
self.skel = GraphSkeleton()
self.skel.load("unittestdict.txt")
self.skel.toporder()
self.hybn = HyBayesianNetwork(self.skel, self.nd)
def test_randomsample(self):
sample = self.hybn.randomsample(1)[0]
self.assertTrue(isinstance(sample['Grade'], float))
self.assertTrue(isinstance(sample['Intelligence'], str))
self.assertEqual(sample["SAT"][-12:], 'blueberries!')
def net2():
nd = NodeData()
skel = GraphSkeleton()
nd.load("net.txt") # an input file
skel.load("net.txt")
# topologically order graphskeleton
skel.toporder()
# load bayesian network
lgbn = LGBayesianNetwork(skel, nd)
in_data = read_data.getdata2()
learner = PGMLearner()
bn = learner.lg_mle_estimateparams(skel, in_data)
p = cal_prob(in_data[300:500], bn)
print p
return 0
def net2():
nd = NodeData()
skel = GraphSkeleton()
nd.load("net.txt") # an input file
skel.load("net.txt")
# topologically order graphskeleton
skel.toporder()
# load bayesian network
lgbn = LGBayesianNetwork(skel, nd)
in_data=read_data.getdata2()
learner = PGMLearner()
bn=learner.lg_mle_estimateparams(skel,in_data)
p=cal_prob(in_data[300:500],bn)
print p
return 0
def test_structure_estimation(self):
req = DiscreteStructureEstimationRequest()
skel = GraphSkeleton()
skel.load(self.data_path)
skel.toporder()
teacher_nd = NodeData()
teacher_nd.load(self.teacher_data_path)
bn = DiscreteBayesianNetwork(skel, teacher_nd)
data = bn.randomsample(8000)
for v in data:
gs = DiscreteGraphState()
for k_s, v_s in v.items():
gs.node_states.append(DiscreteNodeState(node=k_s, state=v_s))
req.states.append(gs)
res = self.struct_estimate(req)
self.assertIsNotNone(res.graph)
self.assertEqual(len(res.graph.nodes), 5)
self.assertGreater(len(res.graph.edges), 0)
def setUp(self):
# instantiate learner
self.l = PGMLearner()
# generate graph skeleton
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
# generate sample sequence to try to learn from - discrete
nd = NodeData.load("unittestdict.txt")
self.samplediscbn = DiscreteBayesianNetwork(nd)
self.samplediscseq = self.samplediscbn.randomsample(5000)
# generate sample sequence to try to learn from - discrete
nda = NodeData.load("unittestlgdict.txt")
self.samplelgbn = LGBayesianNetwork(nda)
self.samplelgseq = self.samplelgbn.randomsample(10000)
self.skel = skel
def setUp(self):
# instantiate learner
self.l = PGMLearner()
# generate graph skeleton
skel = GraphSkeleton()
skel.load("unittestdict.txt")
skel.toporder()
# generate sample sequence to try to learn from - discrete
nd = NodeData.load("unittestdict.txt")
self.samplediscbn = DiscreteBayesianNetwork(nd)
self.samplediscseq = self.samplediscbn.randomsample(5000)
# generate sample sequence to try to learn from - discrete
nda = NodeData.load("unittestlgdict.txt")
self.samplelgbn = LGBayesianNetwork(nda)
self.samplelgseq = self.samplelgbn.randomsample(10000)
self.skel = skel
def test_structure_estimation(self):
req = DiscreteStructureEstimationRequest()
skel = GraphSkeleton()
skel.load(self.data_path)
skel.toporder()
teacher_nd = NodeData()
teacher_nd.load(self.teacher_data_path)
bn = DiscreteBayesianNetwork(skel, teacher_nd)
data = bn.randomsample(8000)
for v in data:
gs = DiscreteGraphState()
for k_s, v_s in v.items():
gs.node_states.append(DiscreteNodeState(node=k_s, state=v_s))
req.states.append(gs)
res = self.struct_estimate(req)
self.assertIsNotNone(res.graph)
self.assertEqual(len(res.graph.nodes), 5)
self.assertGreater(len(res.graph.edges), 0)
def main():
in_data = read_data.getdata()
f_data = format_data(in_data)
nd = NodeData()
nd.load("net4.txt") # an input file
skel = GraphSkeleton()
skel.load("net4.txt")
skel.toporder()
bn = DiscreteBayesianNetwork(skel, nd)
#training dataset:70%
bn2 = em(f_data[1:6000], bn, skel)
pr_training = precision(f_data[1:6000], bn2)
print "Prediction accuracy for training data:", pr_training[1]
#testing dataset:30%
pr = precision(f_data[6700:6800], bn2)
print "Prediction accuracy for test data:", pr[1]
def test_param_estimation(self):
req = DiscreteParameterEstimationRequest()
# load graph structure
skel = GraphSkeleton()
skel.load(self.data_path)
req.graph.nodes = skel.V
req.graph.edges = [GraphEdge(k, v) for k,v in skel.E]
skel.toporder()
# generate trial data
teacher_nd = NodeData()
teacher_nd.load(self.teacher_data_path)
bn = DiscreteBayesianNetwork(skel, teacher_nd)
data = bn.randomsample(200)
for v in data:
gs = DiscreteGraphState()
for k_s, v_s in v.items():
gs.node_states.append(DiscreteNodeState(node=k_s, state=v_s))
req.states.append(gs)
self.assertEqual(len(self.param_estimate(req).nodes), 5)
def main():
in_data=read_data.getdata()
f_data=format_data(in_data)
nd = NodeData()
nd.load("net4.txt") # an input file
skel = GraphSkeleton()
skel.load("net4.txt")
skel.toporder()
bn=DiscreteBayesianNetwork(skel,nd)
#training dataset:70%
bn2=em(f_data[1:6000],bn,skel)
pr_training = precision(f_data[1:6000],bn2)
print "Prediction accuracy for training data:" , pr_training[1]
#testing dataset:30%
pr=precision(f_data[6700:6800],bn2)
print "Prediction accuracy for test data:", pr[1]
def test_param_estimation(self):
req = DiscreteParameterEstimationRequest()
# load graph structure
skel = GraphSkeleton()
skel.load(self.data_path)
req.graph.nodes = skel.V
req.graph.edges = [GraphEdge(k, v) for k, v in skel.E]
skel.toporder()
# generate trial data
teacher_nd = NodeData()
teacher_nd.load(self.teacher_data_path)
bn = DiscreteBayesianNetwork(skel, teacher_nd)
data = bn.randomsample(200)
for v in data:
gs = DiscreteGraphState()
for k_s, v_s in v.items():
gs.node_states.append(DiscreteNodeState(node=k_s, state=v_s))
req.states.append(gs)
self.assertEqual(len(self.param_estimate(req).nodes), 5)
# ], (...)
#
# This means that the survival probability given Class=1 and Sex = 0 is 0.968; the prob of not survival given the same conditions is 0.032.
# I now create a bayesian network in order to run queries on it, given
# some evidence. In this case, we're not learning any parameters,
# we've calculated them previously and we use them to define the net.
# In[ ]:
nd = NodeData()
skel = GraphSkeleton()
jsonpath_skel ="titanic_skel.json"
jsonpath_node ="titanic_nodes.json"
nd.load(jsonpath_node)
skel.load(jsonpath_skel)
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
print (skel.getchildren("Class"),skel.getchildren("Sex"),skel.getchildren("Fare"),skel.getchildren("Surv"))
([u'Surv'], [u'Surv'], [u'Class'], [])
# In[ ]:
# We can now start querying our network. We provide a query (first dictionary in the arguments)
# and an evidence (second dictionary in the args))
tablecpd=TableCPDFactorization(bn)
print ("P(Surv=0) = {}".format(tablecpd.specificquery(dict(Surv='0'),dict())))
def setUp(self):
self.nd = NodeData.load("unittestdyndict.txt")
self.skel = GraphSkeleton()
self.skel.load("unittestdyndict.txt")
self.skel.toporder()
self.d = DynDiscBayesianNetwork(self.skel, self.nd)
from libpgm.graphskeleton import GraphSkeleton
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.lgbayesiannetwork import LGBayesianNetwork
from libpgm.hybayesiannetwork import HyBayesianNetwork
from libpgm.dyndiscbayesiannetwork import DynDiscBayesianNetwork
from libpgm.tablecpdfactorization import TableCPDFactorization
from libpgm.sampleaggregator import SampleAggregator
from libpgm.pgmlearner import PGMLearner
# (1) ---------------------------------------------------------------------
# Generate a sequence of samples from a discrete-CPD Bayesian network
# load nodedata and graphskeleton
nd = NodeData()
skel = GraphSkeleton()
nd.load("../tests/unittestdict.txt")
skel.load("../tests/unittestdict.txt")
# topologically order graphskeleton
skel.toporder()
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
# sample
result = bn.randomsample(10)
# output - toggle comment to see
#print json.dumps(result, indent=2)
# (2) ----------------------------------------------------------------------
param_estimate = rospy.ServiceProxy(
"pgm_learner/linear_gaussian/parameter_estimation", LinearGaussianParameterEstimation
)
req = LinearGaussianParameterEstimationRequest()
dpath = os.path.join(PKG_PATH, "test", "graph-test.txt")
tpath = os.path.join(PKG_PATH, "test", "graph-lg-test.txt")
# load graph structure
skel = GraphSkeleton()
skel.load(dpath)
req.graph.nodes = skel.V
req.graph.edges = [GraphEdge(k, v) for k, v in skel.E]
skel.toporder()
# generate trial data
teacher_nd = NodeData()
teacher_nd.load(tpath)
bn = LGBayesianNetwork(skel, teacher_nd)
data = bn.randomsample(200)
for v in data:
gs = LinearGaussianGraphState()
for k_s, v_s in v.items():
gs.node_states.append(LinearGaussianNodeState(node=k_s, state=v_s))
req.states.append(gs)
PP.pprint(param_estimate(req).nodes)
temp = []
#temp.append(min(list)+float(max(list) - min(list))*1/3)
#temp.append(min(list)+float(max(list) - min(list))*2/3)
temp.append(float(max(list))/3)
temp.append(float(max(list))/3*2)
return temp
EachLikeThreshold = Threshold(EachLike)
EachLikedThreshold = Threshold(EachLiked)
print EachLikeThreshold
print EachLikedThreshold
BulliedPro = []
nd = NodeData()
skel = GraphSkeleton()
nd.load('unittestdict.txt')
skel.load('unittestdict.txt')
bn = DiscreteBayesianNetwork(skel, nd)
fn = TableCPDFactorization(bn)
for i in range(len(EachLike)):
evidence = {}
if EachLike[i] <= EachLikeThreshold[0]:
evidence['LikeN'] = 'Small'
elif EachLikeThreshold[0] < EachLike[i] and EachLike[i] <= EachLikeThreshold[1]:
evidence['LikeN'] = 'Mid'
else:
evidence['LikeN'] = 'Big'
if EachLiked[i] <= EachLikedThreshold[0]:
evidence['LikedN'] = 'Small'
elif EachLikedThreshold[0] < EachLiked[i] and EachLiked[i] <= EachLikedThreshold[1]:
import json
from libpgm.graphskeleton import GraphSkeleton
from libpgm.nodedata import NodeData
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.tablecpdfactorization import TableCPDFactorization
# load nodedata and graphskeleton
nd = NodeData()
skel = GraphSkeleton()
nd.load("grades.txt")
skel.load("grades.txt")
# toporder graph skeleton
skel.toporder()
# load evidence
evidence = dict(Letter='weak')
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
# load factorization
fn = TableCPDFactorization(bn)
# sample
result = fn.gibbssample(evidence, 1000)
# output
print json.dumps(result, indent=2)
import json
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.pgmlearner import PGMLearner
nd = NodeData()
nd.load("nodedata.json")
skel = GraphSkeleton()
skel.load("nodedata.json")
skel.toporder()
bn = DiscreteBayesianNetwork(skel,nd)
with open("manipulatedata.json") as fp:
data = json.load(fp)
learner = PGMLearner()
# result = learner.discrete_constraint_estimatestruct(data)
result = learner.discrete_estimatebn(data)
print json.dumps(result.E, indent=2)
print json.dumps(result.Vdata, indent=2)
import json
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.pgmlearner import PGMLearner
# generate some data to use
nd = NodeData()
nd.load("grades.txt") # an input file
skel = GraphSkeleton()
skel.load("grades.txt")
skel.toporder()
bn = DiscreteBayesianNetwork(skel, nd)
data = bn.randomsample(80000)
# instantiate my learner
learner = PGMLearner()
# estimate structure
result = learner.discrete_constraint_estimatestruct(data)
# output
print json.dumps(result.E, indent=2)
rospy.init_node("pgm_learner_sample_discrete")
param_estimate = rospy.ServiceProxy(
"pgm_learner/discrete/parameter_estimation",
DiscreteParameterEstimation)
req = DiscreteParameterEstimationRequest()
dpath = os.path.join(PKG_PATH, "test", "graph-test.txt")
tpath = dpath
# load graph structure
skel = GraphSkeleton()
skel.load(dpath)
req.graph.nodes = skel.V
req.graph.edges = [GraphEdge(k, v) for k, v in skel.E]
skel.toporder()
# generate trial data
teacher_nd = NodeData()
teacher_nd.load(dpath)
bn = DiscreteBayesianNetwork(skel, teacher_nd)
data = bn.randomsample(200)
for v in data:
gs = DiscreteGraphState()
for k_s, v_s in v.items():
gs.node_states.append(DiscreteNodeState(node=k_s, state=v_s))
req.states.append(gs)
PP.pprint(param_estimate(req).nodes)
data_l = []
for line in data_r.readlines():
data_l.append(map(int, line.split()))
truth_l = []
for row in truth_r:
truth_l.append(row[0])
w = csv.writer(open("bayesian_outcome.txt", "wb"))
count = 0
for i in range(104):
nd = NodeData()
skel = GraphSkeleton()
nd.load('bayes_net/'+str(i)+".txt") # any input file
skel.load('bayes_net/'+str(i)+".txt")
# topologically order graphskeleton
skel.toporder()
# load bayesian network
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
dic1 = {}
k = 1
for c in data_l[i]:
dic1[str(k)] = str(c)
k += 2
print dic1
# # instantiate my learner
# learner = PGMLearner()
#
# # estimate parameters
# result = learner.discrete_mle_estimateparams(skel, data)
#
# # output - toggle comment to see
# print json.dumps(result.Vdata, indent=2)
# (5) --------------------------------------------------------------------------
# Compute the probability distribution over a specific node or nodes
# load nodedata and graphskeleton
nd = NodeData()
skel = GraphSkeleton()
nd.load("../tests/unittestdict.txt")
skel.load("../tests/unittestdict.txt")
# toporder graph skeleton
print skel.toporder()
# load evidence
evidence = {"Intelligence": "high"}
query = {"Grade": "A"}
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
# load factorization
fn = TableCPDFactorization(bn)
import json
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.tablecpdfactorization import TableCPDFactorization
# load nodedata and graphskeleton
nd = NodeData()
skel = GraphSkeleton()
nd.load("tests/net1.json") # any input file
skel.load("tests/net1.json")
# topologically order graphskeleton
skel.toporder()
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
fn = TableCPDFactorization(bn)
# sample
result = fn.specificquery(dict(C='T'), dict(B='F'))
# output
print json.dumps(result, indent=2)
import json
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.pgmlearner import PGMLearner
# generate some data to use
nd = NodeData()
nd.load("bayes_structure.txt") # an input file
skel = GraphSkeleton()
skel.load("bayes_structure.txt")
skel.toporder()
bn = DiscreteBayesianNetwork(skel, nd)
data = bn.randomsample(200)
# instantiate my learner
learner = PGMLearner()
# estimate parameters from data and skeleton
result = learner.discrete_mle_estimateparams(skel, data)
# output
print json.dumps(result.Vdata, indent=2)
#Draw sample from beta distribution
sampled_theta += [dist.rvs()]
# Return the index of the sample with the largest value
return sampled_theta.index(max(sampled_theta))
def regret(self, bestprob):
# regret as ratio between reward and expectation of reward had we always selected best
reward = sum(self.successes) / float(sum(self.trials))
optimal = bestprob
return 1 - reward / bestprob
# load nodedata and graphskeleton
nd = NodeData()
skel = GraphSkeleton()
nd.load("bayesnet.json") # any input file
skel.load("bayesnet.json")
# topologically order graphskeleton
skel.toporder()
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
simulations = 10000 # the number of simulations of the whole process
experiments = 32 # the number of experiments we run in each simulation
# specify what the interventions are for the 'try all combinations of interventions' bandit
interventions = [{
"X1": '0',
"X2": '0',
if __name__ == '__main__':
rospy.init_node("pgm_learner_sample_discrete")
param_estimate = rospy.ServiceProxy("pgm_learner/discrete/parameter_estimation", DiscreteParameterEstimation)
req = DiscreteParameterEstimationRequest()
dpath = os.path.join(PKG_PATH, "test", "graph-test.txt")
tpath = dpath
# load graph structure
skel = GraphSkeleton()
skel.load(dpath)
req.graph.nodes = skel.V
req.graph.edges = [GraphEdge(k, v) for k,v in skel.E]
skel.toporder()
# generate trial data
teacher_nd = NodeData()
teacher_nd.load(dpath)
bn = DiscreteBayesianNetwork(skel, teacher_nd)
data = bn.randomsample(200)
for v in data:
gs = DiscreteGraphState()
for k_s, v_s in v.items():
gs.node_states.append(DiscreteNodeState(node=k_s, state=v_s))
req.states.append(gs)
PP.pprint(param_estimate(req).nodes)
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from inference.exact_inference import ExactInferenceEngine
from inference.approximate_inference import ApproximateInferenceEngine
node_data = NodeData()
network_skeleton = GraphSkeleton()
node_data.load('test_bayesian_networks/network.txt')
network_skeleton.load('test_bayesian_networks/network.txt')
network = DiscreteBayesianNetwork(network_skeleton, node_data)
exact_inference_engine = ExactInferenceEngine(network)
approximate_inference_engine = ApproximateInferenceEngine(network)
query_variable = 'Burglary'
evidence_variables = {'MaryCalls': 'true', 'JohnCalls': 'true'}
resulting_distribution = exact_inference_engine.perform_inference(query_variable, evidence_variables)
print 'P(B|m,j) - enumeration: ', resulting_distribution
resulting_distribution = exact_inference_engine.perform_ve_inference(query_variable, evidence_variables)
print '(B|m,j) - variable elimination: ', resulting_distribution
resulting_distribution = approximate_inference_engine.perform_rs_inference(query_variable, evidence_variables, 100000)
print 'P(B|m,j) - approximate - rejection sampling: ', resulting_distribution
resulting_distribution = approximate_inference_engine.perform_lw_inference(query_variable, evidence_variables, 100000)
print 'P(B|m,j) - approximate - likelihood weighting: ', resulting_distribution
resulting_distribution = approximate_inference_engine.perform_gibbs_inference(query_variable, evidence_variables, 100000)
print 'P(B|m,j) - approximate - Gibbs: ', resulting_distribution
print
query_variable = 'JohnCalls'
import json
from libpgm.graphskeleton import GraphSkeleton
from libpgm.nodedata import NodeData
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.tablecpdfactorization import TableCPDFactorization
# load nodedata and graphskeleton
nd = NodeData()
skel = GraphSkeleton()
nd.load("grades.txt")
skel.load("grades.txt")
# toporder graph skeleton
skel.toporder()
# load evidence
evidence = dict(Letter='weak')
# load bayesian network
bn = DiscreteBayesianNetwork(skel, nd)
# load factorization
fn = TableCPDFactorization(bn)
# sample
result = fn.gibbssample(evidence, 1000)
# output
print json.dumps(result, indent=2)
import json
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.lgbayesiannetwork import LGBayesianNetwork
from libpgm.pgmlearner import PGMLearner
# generate some data to use
nd = NodeData()
nd.load("gaussGrades.txt") # an input file
skel = GraphSkeleton()
skel.load("gaussGrades.txt")
skel.toporder()
lgbn = LGBayesianNetwork(skel, nd)
data = lgbn.randomsample(8000)
print data
# instantiate my learner
learner = PGMLearner()
# estimate structure
result = learner.lg_constraint_estimatestruct(data)
# output
print json.dumps(result.E, indent=2)
if len(sys.argv) != 2: # the program name and the datafile
# stop the program and print an error message
sys.exit("usage: ch16.py datafile.txt ")
filename = sys.argv[1]
try:
f = open(filename, 'r') # opens the input file
except IOError:
print("Cannot open file %s" % filename)
sys.exit("BYE!")
#load data
nd = NodeData()
skel = GraphSkeleton()
nd.load(filename)
skel.load(filename)
#load B Network
skel.toporder()
bn = DiscreteBayesianNetwork(skel, nd)
#set up function
jp = []
temp = []
cal = []
#initiralization
sc = {}
for i in range(len(bn.V)):
sc[bn.V[i]] = '0'
temp.append(bn.V[i])
temp.append('p')
import json
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.lgbayesiannetwork import LGBayesianNetwork
from libpgm.pgmlearner import PGMLearner
# generate some data to use
nd = NodeData()
nd.load("gaussGrades.txt") # an input file
skel = GraphSkeleton()
skel.load("gaussGrades.txt")
skel.toporder()
lgbn = LGBayesianNetwork(skel, nd)
data = lgbn.randomsample(8000)
print data
# instantiate my learner
learner = PGMLearner()
# estimate structure
result = learner.lg_constraint_estimatestruct(data)
# output
print json.dumps(result.E, indent=2)
def setUp(self):
self.nd = NodeData.load("unittestdyndict.txt")
self.skel = GraphSkeleton()
self.skel.load("unittestdyndict.txt")
self.skel.toporder()
self.d = DynDiscBayesianNetwork(self.skel, self.nd)
dictionary = set().union(wkdayValsList, hourValsList, locatValsList,
activValsList)
# checking if input from user was approppriate
if set(userinput).issubset(dictionary):
# initializing probabilities lists
wkdayProbList = []
hourProbList = []
locatProbList = []
activProbList = []
#INITIALIZING BN 1
# load nodedata and graphskeleton
nd1 = NodeData()
skel1 = GraphSkeleton()
nd1.load(path_bn1)
skel1.load(path_bn1)
skel1.toporder() # toporder graph skeleton
#INITIALIZING BN 2
# load nodedata and graphskeleton
nd2 = NodeData()
skel2 = GraphSkeleton()
nd2.load(path_bn2)
skel2.load(path_bn2)
skel2.toporder() # toporder graph skeleton
# FINDING NEXT ACTIVITY ATTRIBUTES THROUGH INFERENCE ON BN 1
# wkday variable query
evidence1 = dict(wkdayT0=userinput[0])
for i, item in enumerate(wkdayValsList):
import json
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.discretebayesiannetwork import DiscreteBayesianNetwork
from libpgm.pgmlearner import PGMLearner
# generate some data to use
nd = NodeData()
nd.load("grades.txt") # an input file
skel = GraphSkeleton()
skel.load("grades.txt")
skel.toporder()
bn = DiscreteBayesianNetwork(skel, nd)
data = bn.randomsample(80000)
# instantiate my learner
learner = PGMLearner()
# estimate structure
result = learner.discrete_constraint_estimatestruct(data)
# output
print json.dumps(result.E, indent=2)
