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// Copyright (C) 2002 Samy Bengio (bengio@idiap.ch)
//
//
// This file is part of Torch. Release II.
// [The Ultimate Machine Learning Library]
//
// Torch is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Torch is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Torch; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "TableLookupDistribution.h"
namespace Torch {
TableLookupDistribution::TableLookupDistribution(int column_, bool apply_log_, real prior_) : Distribution()
{
column = column_;
apply_log = apply_log_;
prior = prior_;
n_observations = column+1;
n_inputs = 0;
}
int TableLookupDistribution::numberOfParams()
{
return 0;
}
real TableLookupDistribution::frameLogProbability(real *observations, real *inputs, int t)
{
real lp = observations[column] * prior;
if (apply_log)
lp = log(lp);
return lp;
}
TableLookupDistribution::~TableLookupDistribution()
{
}
}
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