void computeWordFrequencies(AddressableMatrixT const & points, U * histogram, double const * point_weights = NULL,
typename std::enable_if<
std::is_base_of< AbstractAddressableMatrix<typename AddressableMatrixT::Value>,
AddressableMatrixT >::value >::type * dummy = NULL) const
{
long num_points = points.rows();
Array<long> labeling((size_t)num_points);
vocabulary.mapToClusters(points, &labeling[0]);
long num_words = numWords();
for (long i = 0; i < num_words; ++i)
histogram[i] = 0;
for (size_t i = 0; i < labeling.size(); ++i)
{
if (labeling[i] >= 0)
histogram[labeling[i]] += static_cast<U>(point_weights ? point_weights[i] : 1);
}
}
// PathCounter(S&& s): spec(std::forward<S>(s)), hasher(spec), stateWords(numWords(spec.datasize())) {
// }
PathCounter(S& s)
: spec(s), hasher(spec), stateWords(numWords(spec.datasize())) {
}
