Beispiel #1
0
void transacc(GArgReader& args)
{
	// Parse options
	unsigned int seed = getpid() * (unsigned int)time(NULL);
	while(args.next_is_flag())
	{
		if(args.if_pop("-seed"))
			seed = args.pop_uint();
		else
			ThrowError("Invalid crossvalidate option: ", args.peek());
	}

	// Load the data
	if(args.size() < 1)
		ThrowError("No training set specified.");
	GMatrix* pTrain = loadData(args.pop_string());
	Holder<GMatrix> hTrain(pTrain);
	if(args.size() < 1)
		ThrowError("No test set specified.");
	GMatrix* pTest = loadData(args.pop_string());
	Holder<GMatrix> hTest(pTest);

	// Instantiate the recommender
	GRand prng(seed);
	GCollaborativeFilter* pModel = InstantiateAlgorithm(prng, args);
	Holder<GCollaborativeFilter> hModel(pModel);
	if(args.size() > 0)
		ThrowError("Superfluous argument: ", args.peek());

	// Do cross-validation
	double mae;
	double mse = pModel->trainAndTest(*pTrain, *pTest, &mae);
	cout << "MSE=" << mse << ", MAE=" << mae << "\n";
}
Beispiel #2
0
void GRecommenderLib::transacc(GArgReader& args)
{
	// Parse options
	unsigned int seed = getpid() * (unsigned int)time(NULL);
	while(args.next_is_flag())
	{
		if(args.if_pop("-seed"))
			seed = args.pop_uint();
		else
			throw Ex("Invalid crossvalidate option: ", args.peek());
	}

	// Load the data
	if(args.size() < 1)
		throw Ex("No training set specified.");
	GMatrix train;
	loadData(train, args.pop_string());
	if(args.size() < 1)
		throw Ex("No test set specified.");
	GMatrix test;
	loadData(test, args.pop_string());

	// Instantiate the recommender
	GCollaborativeFilter* pModel = InstantiateAlgorithm(args);
	std::unique_ptr<GCollaborativeFilter> hModel(pModel);
	if(args.size() > 0)
		throw Ex("Superfluous argument: ", args.peek());
	pModel->rand().setSeed(seed);

	// Do cross-validation
	double mae;
	double mse = pModel->trainAndTest(train, test, &mae);
	cout << "MSE=" << mse << ", MAE=" << mae << "\n";
}