/**
* Sends the ith message to the marginal and returns the log-normalization constant
*/
public function sendMessageIndex($messageIndex)
{
Guard::argumentIsValidIndex($messageIndex, count($this->_messages), "messageIndex");
$message =& $this->_messages[$messageIndex];
$variable =& $this->_messageToVariableBinding->getValue($message);
return $this->sendMessageVariable($message, $variable);
}
public function updateMessageIndex($messageIndex)
{
$allMessages = $this->getMessages();
$allVariables = $this->getVariables();
Guard::argumentIsValidIndex($messageIndex, count($allMessages), "messageIndex");
$updatedMessages = array();
$updatedVariables = array();
$indicesToUse = $this->_variableIndexOrdersForWeights[$messageIndex];
// The tricky part here is that we have to put the messages and variables in the same
// order as the weights. Thankfully, the weights and messages share the same index numbers,
// so we just need to make sure they're consistent
$allMessagesCount = count($allMessages);
for ($i = 0; $i < $allMessagesCount; $i++) {
$updatedMessages[] = $allMessages[$indicesToUse[$i]];
$updatedVariables[] = $allVariables[$indicesToUse[$i]];
}
return $this->updateHelper($this->_weights[$messageIndex], $this->_weightsSquared[$messageIndex], $updatedMessages, $updatedVariables);
}
