The error, "Unhandled exception at 0x75aa9617 in learning.exe: Microsoft C++ exception:
HAPI::ExceptionMemory at memory location 0x001cf9c4..", will happen, when I add the
parsecases ( ) based on EM class.
The program:
# include "hugin"
# include <vector>
# include <string>
# include <cstdio>
# include <iostream>
# include <exception>
class EM {
public:
EM (const string &fileName);
private:
void specifyLearningParameters (Domain *d);
void printLearningParameters (Domain *d);
void loadCases (Domain *d);
void printCases (Domain *d);
void printNodeMarginals (Domain *d);
};
int main()
{
new EM ("C:\\learning");
return 0;
}
EM::EM (const string &fileName)
{
string netFileName = fileName + ".net";
Domain d (netFileName, NULL);
string logFileName = fileName + ".log";
FILE *logFile = fopen (logFileName.c_str (), "w");
d.setLogFile (logFile);
d.compile ();
specifyLearningParameters (&d);
loadCases (&d);
DefaultParseListener pl;
d.parseCases("C:\\learningdata", &pl);
d.learnTables ();
cout << "Log likelihood: " << d.getLogLikelihood () << endl;
d.saveAsNet ("q.net");
}
void EM::specifyLearningParameters (Domain *d)
{
const NodeList nl = d->getNodes ();
NumberList data;
for (NodeList::const_iterator nlIter = nl.begin (), nlEnd = nl.end ();
nlIter != nlEnd; ++nlIter) {
DiscreteChanceNode *node = dynamic_cast<DiscreteChanceNode*> (*nlIter);
if (node != 0) {
Table *table = node->getExperienceTable ();
data.clear ();
data.insert (data.end (), table->getSize (), 1);
table->setData (data);
}
}
d->setLogLikelihoodTolerance (0.000001);
d->setMaxNumberOfEMIterations (1000);
}
void EM::loadCases (Domain *d)
{
d->setNumberOfCases (0);
size_t iCase = d->newCase ();
cout << "Case index: " << iCase << endl;
d->setCaseCount (iCase, 2.5);
const NodeList nl = d->getNodes ();
for (NodeList::const_iterator nlIter = nl.begin (), nlEnd = nl.end ();
nlIter != nlEnd; ++nlIter) {
DiscreteChanceNode *dcNode = dynamic_cast<DiscreteChanceNode*> (*nlIter);
if (dcNode != 0)
dcNode->setCaseState (iCase, 0);
}
DiscreteChanceNode *dcNode = dynamic_cast<DiscreteChanceNode*> (nl[1]);
if (dcNode != 0)
dcNode->unsetCase (iCase);
}
I don't know why the error happen.
Can you help me?
Thank you very much!
