rvs = truncrvs
aimean = rvs[0].stats('m')[()]
rv_am = stats.norm(aimean, sigmae)
pod = 1. - stats.norm.cdf((np.log(aimean) - lmd2) / beta2)
probs = rv_am.cdf(node_mi.bins[1:]) - rv_am.cdf(node_mi.bins[:-1])
print 'labels: {}, progress: {}%, prob: {}'.format(
label,
float(i) / len(labels) * 100, np.array_str(probs, precision=3))
probs = probs / np.sum(probs) * pod
probs[0] = probs[0] + (1. - pod)
node_mi.assign_cpt(probs,
label=np.asarray(label),
statenames=node_mi.statenames)
# create new network
dbnet = Network("Soliman2014DBN")
# add nodes to network
dbnet.add_nodes([node_m, node_k] + aarray + marray)
# add link: must be prior to defining nodes
dbnet.add_link()
# define nodes
dbnet.define_nodes()
# compile the net
dbnet.compile_net()
# enable autoupdate
dbnet.set_autoupdate()
# save the network
dbnet.save_net("Soliman2014DBN.dne")
from pyNetica import Network, Node
import numpy as np
# create new net
netp = Network("ChestClinic")
# define nodes
visitAsia = Node("VisitAsia", parents=None, rvname='discrete')
smoking = Node("Smoking", parents=None, rvname='discrete')
tuberculosis = Node("Tuberculosis", parents=[visitAsia], rvname='discrete')
cancer = Node("Cancer", parents=[smoking], rvname='discrete')
tbOrCa = Node("TbOrCa", parents=[tuberculosis, cancer], rvname='discrete')
xRay = Node("XRay", parents=[tbOrCa], rvname='discrete')
# assign CPT
visitAsiaCpt = np.array([0.01, 0.99])[np.newaxis, :]
visitAsia.assign_cpt(visitAsiaCpt, statenames=['visit', 'no_visit'])
smokingCpt = np.array([0.50, 0.50])[np.newaxis, :]
smoking.assign_cpt(smokingCpt, statenames=['smoker', 'nonsmoker'])
tuberCpt = np.array([[0.05, 0.95], [0.01, 0.99]])
tuberculosis.assign_cpt(tuberCpt, statenames=['present', 'absent'])
cancerCpt = np.array([[0.10, 0.90], [0.01, 0.99]])
cancer.assign_cpt(cancerCpt, statenames=['present', 'absent'])
tbOrCaCpt = np.array([[1.0, 0.0], [1.0, 0.0], [1.0, 0.0], [0.0, 1.0]])
tbOrCa.assign_cpt(tbOrCaCpt, statenames=['true', 'false'])
xRayCpt = np.array([[0.98, 0.02], [0.05, 0.95]])
xRay.assign_cpt(xRayCpt, statenames=['abnormal', 'normal'])
# add node
netp.add_nodes([visitAsia])
netp.add_nodes([smoking])
aistate, = pstate
acrstate = np.searchsorted(node_al.bins, acrit + 1e-10) - 1
truncrv_ai = node_ai.truncate_rv(aistate, lmd=trunclmd)
if aistate < acrstate:
utilr = 0.
elif aistate > acrstate:
utilr = -Cfail
elif aistate == acrstate:
pf = 1. - truncrv_ai.cdf(acrit)
utilr = -pf * Cfail
return utilr
node_fr.assign_func(failure_risk)
# create new network
dbnet = Network("Soliman2014InfDiag")
# add nodes to network
dbnet.add_nodes([node_m, node_k] + aarray + marray + insparray + uiarray +
rarray + urarray + [node_fr])
# add link: must be prior to defining nodes
dbnet.add_link()
# define nodes
dbnet.define_nodes()
# compile the net
dbnet.compile_net()
# enable autoupdate
dbnet.set_autoupdate()
# save the network
dbnet.save_net("Soliman2014InfDiag.dne")
truncrvs.append(e.parents[j + 1].truncate_rv(pstate))
if label[0] == 1: # failure in previous time slot
prob = 1.
else:
prob = intg2e(truncrvs[0], truncrvs[1])
print 'labels: {}, progress: {}%, prob: {}'.format(
label,
float(i) / len(labels) * 100, prob)
probs = np.array([1. - prob, prob])
e.assign_cpt(probs,
label=np.asarray(label),
statenames=['safe', 'fail'],
labels=labels)
# create new network
dbnet = Network("Straub2010Ex2")
# add nodes to network
dbnet.add_nodes([r5, r4, m5, m4, uh, q] + harray + earray)
# add link: must be prior to defining nodes
dbnet.add_link()
# define nodes
dbnet.define_nodes()
# compile the net
dbnet.compile_net()
# enable autoupdate
dbnet.set_autoupdate()
# save the network
dbnet.save_net("Straub2010Ex2.dne")
nstate = 2
labels = itertools.product(np.arange(x2.nstates()))
rvnames = [x2.name, 'X3']
corr = np.eye(nstate)
for i, label in enumerate(labels):
rvs = []
probs=[]
for j, pstate in enumerate(label):
rvs.append(y.parents[j].truncate_rv(pstate, lmd=lmd))
rvs.append(rvX3)
pf = form2y(rvnames, rvs, corr)
probs = np.array([1.-pf, pf])
y.assign_cpt(probs,label=np.asarray(label),statenames=['neg', 'init'])
# create new network
dbnet = Network("BNexample1")
# add nodes to network
dbnet.add_nodes([x1, x2, y])
# add link: must before define nodes
dbnet.add_link()
# define nodes
dbnet.define_nodes()
# compile the net
dbnet.compile_net()
# enable autoupdate
dbnet.set_autoupdate()
# save the network
dbnet.save_net("BNexample1.dne")
from pyNetica import Network
def statename2edges(statenames):
edges = []
for statename in statenames:
numstr = statename[1:].replace('_', '.')
if numstr != 'inf':
edges.append(numstr)
else:
continue
return np.array(edges, dtype=float)
if __name__ == '__main__':
# load net from dbn file
dbnet = Network('Soliman2014DBN', file='Soliman2014DBN.dne')
# compile the net
dbnet.compile_net()
# enable autoupdate
dbnet.set_autoupdate()
m3 = dbnet.find_nodenamed('M3')
if m3 == 'error':
print "ERROR: cannot find node M3"
sys.exit(1)
m3meaure = 0.6
m3edges = statename2edges(m3.statenames)
m3bins = np.hstack((-np.inf, m3edges, np.inf))
m3state = np.searchsorted(m3bins, m3meaure)-1
dbnet.enter_finding(m3, m3state)
a5 = dbnet.find_nodenamed('A5')
