/**
* Creates a matrix to process genre data and generate the first factor of the proximity matrix
* needed for a {@code HIRItemScorer}.
*
* @param dao The DataAccessObject interfacing with the item data for the model
* @param gDao The genreDataAccessObject interfacing with the genre data for the model
*/
public RowStochasticFactorOfProximity(ItemDAO dao, ItemGenreDAO gDao) {
LongSet items = dao.getItemIds();
int genreSize = gDao.getGenreSize();
itemSize = items.size();
double[][] data = new double[itemSize][genreSize];
rowStochastic = MatrixUtils.createRealMatrix(data);
int i = 0;
LongIterator iter = items.iterator();
while (iter.hasNext()) {
long item = iter.nextLong();
rowStochastic.setRowVector(i, gDao.getItemGenre(item));
i++;
}
}
