public void TestShowFeatures()
{
var newsFeatures = new NewsFeatures();
(var allW, var artW, var artT) = newsFeatures.GetArticleWords();
(var wordMatrix, var wordVec) = newsFeatures.MakeMatrix(allW, artW);
var nmf = new Nmf(o => TestOutput(o.ToString()));
var matrix = DenseMatrix.OfRows(wordMatrix);
(var weights, var feat) = nmf.Factorize(matrix, 20, 50);
newsFeatures.ShowFeatures(weights, feat, artT, wordVec);
}
public void TestFactorize()
{
var m1 = DenseMatrix.OfArray(new[, ] {
{ 1d, 2d, 3d }, { 4d, 5d, 6d }
});
var m2 = DenseMatrix.OfArray(new[, ] {
{ 1d, 2d }, { 3d, 4d }, { 5d, 6d }
});
var m12 = m1 * m2;
TestOutput(m12);
var nmf = new Nmf(o => TestOutput(o.ToString()));
(var w, var h) = nmf.Factorize(m12, 3, 100);
TestOutput(w);
TestOutput(h);
TestOutput(w * h);
}