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Slightly simplified the code

This commit is contained in:
Davis King 2014-04-23 20:25:27 -04:00
parent 50a2113f17
commit d6c1081841
1 changed files with 1 additions and 3 deletions
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4
dlib/svm/structural_svm_problem.h
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@ -566,14 +566,12 @@ namespace dlib
f = matrix_cast<double>(reshape(rowm(m, range(idx, idx+size-1)), nr, nc)); f = matrix_cast<double>(reshape(rowm(m, range(idx, idx+size-1)), nr, nc));
svd3(f, u,w,v); svd3(f, u,w,v);
w = round_zeros(w, std::max(1e-9,max(w)*1e-7));
const double norm = sum(w); const double norm = sum(w);
obj += strength*norm; obj += strength*norm;
nuclear_norm_part += strength*norm/C; nuclear_norm_part += strength*norm/C;
w = w>0; f = u*trans(v);
f = u*diagm(w)*trans(v);
set_rowm(grad, range(idx, idx+size-1)) = matrix_cast<double>(strength*reshape_to_column_vector(f)); set_rowm(grad, range(idx, idx+size-1)) = matrix_cast<double>(strength*reshape_to_column_vector(f));
} }