def __init__(self, name):
self._messages = []
self._name = "Factor[%s]" % name
self._variables = []
self._messageToVariableBinding = HashMap()
def __init__(self, name):
self._messages = []
self._name = "Factor[%s]" % name
self._variables = []
self._messageToVariableBinding = HashMap()
class Factor (object):
def __init__(self, name):
self._messages = []
self._name = "Factor[%s]" % name
self._variables = []
self._messageToVariableBinding = HashMap()
def getLogNormalization(self) :
'''return The log-normalization constant of that factor'''
return 0
def getNumberOfMessages(self) :
'''@return The number of messages that the factor has'''
return len(self._messages)
def getVariables(self) :
return self._variables
def getMessages(self) :
return self._messages
def updateMessageIndex(self, messageIndex) :
'''Update the message and marginal of the i-th variable that the factor is connected to'''
Guard.argumentIsValidIndex(messageIndex, len(self._messages), "messageIndex")
message = self._messages[messageIndex]
variable = self._messageToVariableBinding.getValue(message)
return self.updateMessageVariable(message, variable)
def updateMessageVariable(self, message, variable) :
raise Exception()
def resetMarginals(self) :
''' Resets the marginal of the variables a factor is connected to'''
allValues = self._messageToVariableBinding.getAllValues()
for currentVariable in allValues:
currentVariable.resetToPrior()
def sendMessageIndex(self, messageIndex) :
'''Sends the ith message to the marginal and returns the log-normalization constant'''
Guard.argumentIsValidIndex(messageIndex, len(self._messages), "messageIndex")
message = self._messages[messageIndex]
variable = self._messageToVariableBinding.getValue(message)
return self.sendMessageVariable(message, variable)
def sendMessageVariable(self, message, variable) :
pass
def createVariableToMessageBinding(self, variable) :
pass
def createVariableToMessageBindingWithMessage(self, variable, message) :
index = len(self._messages)
localMessages = self._messages
localMessages.append(message)
self._messageToVariableBinding.setValue(message, variable)
localVariables = self._variables
localVariables.append(variable)
return message
def __str__(self):
if self._name != None :
return self._name
class Factor(object):
def __init__(self, name):
self._messages = []
self._name = "Factor[%s]" % name
self._variables = []
self._messageToVariableBinding = HashMap()
def getLogNormalization(self):
"""return The log-normalization constant of that factor"""
return 0
def getNumberOfMessages(self):
"""@return The number of messages that the factor has"""
return len(self._messages)
def getVariables(self):
return self._variables
def getMessages(self):
return self._messages
def updateMessageIndex(self, messageIndex):
"""Update the message and marginal of the i-th variable that the factor is connected to"""
Guard.argumentIsValidIndex(messageIndex, len(self._messages), "messageIndex")
message = self._messages[messageIndex]
variable = self._messageToVariableBinding.getValue(message)
return self.updateMessageVariable(message, variable)
def updateMessageVariable(self, message, variable):
raise Exception()
def resetMarginals(self):
""" Resets the marginal of the variables a factor is connected to"""
allValues = self._messageToVariableBinding.getAllValues()
for currentVariable in allValues:
currentVariable.resetToPrior()
def sendMessageIndex(self, messageIndex):
"""Sends the ith message to the marginal and returns the log-normalization constant"""
Guard.argumentIsValidIndex(messageIndex, len(self._messages), "messageIndex")
message = self._messages[messageIndex]
variable = self._messageToVariableBinding.getValue(message)
return self.sendMessageVariable(message, variable)
def sendMessageVariable(self, message, variable):
pass
def createVariableToMessageBinding(self, variable):
pass
def createVariableToMessageBindingWithMessage(self, variable, message):
index = len(self._messages)
localMessages = self._messages
localMessages.append(message)
self._messageToVariableBinding.setValue(message, variable)
localVariables = self._variables
localVariables.append(variable)
return message
def __str__(self):
if self._name != None:
return self._name