نتایج جستجو برای: rank
تعداد نتایج: 72341 فیلتر نتایج به سال:
2008
BO DONG
MATTHEW M. LIN
MOODY T. CHU
Abstract. Any given nonnegative matrix A ∈ R can be expressed as the product A = UV for some nonnegative matrices U ∈ R and V ∈ R with k ≤ min{m, n}. The smallest k that makes this factorization possible is called the nonnegative rank of A. Computing the exact nonnegative rank and the corresponding factorization are known to be NP-hard. Even if the nonnegative rank is known a priori, no simple ...
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