نتایج جستجو برای: nonnegative

تعداد نتایج: 9314  

Journal: :Illinois Journal of Mathematics 1968

Journal: :SIAM Journal on Computing 2016

Journal: :Linear Algebra and its Applications 1972

Journal: :Proceedings of the American Mathematical Society 1970

Journal: :Journal of Symbolic Computation 2012

Journal: :Linear Algebra and its Applications 1981

2009
Changhu Wang Zheng Song Shuicheng Yan Lei Zhang HongJiang Zhang

In this paper, we study the problem of nonnegative graph embedding, originally investigated in [14] for reaping the benefits from both nonnegative data factorization and the specific purpose characterized by the intrinsic and penalty graphs [13]. Our contributions are two-fold. On the one hand, we present a multiplicative iterative procedure for nonnegative graph embedding, which significantly ...

Journal: :iranian journal of fuzzy systems 2012
r. ezzati s. khezerloo z. valizadeh n. mahdavi-amiri

we present a model and propose an approach to compute an approximate solution of fully fuzzy linear system $(ffls)$ of equations in which all the components of the coefficient matrix are either nonnegative or nonpositive. first, in discussing an $ffls$ with a nonnegative coefficient matrix, we consider an equivalent $ffls$ by using an appropriate permutation to simplify fuzzy multiplications. t...

The main results of this paper are generalizations of classical results from the numerical range to the block numerical range. A different and simpler proof for the Perron-Frobenius theory on the block numerical range of an irreducible nonnegative matrix is given. In addition, the Wielandt's lemma and the Ky Fan's theorem on the block numerical range are extended.

2012
ADEL ALAHMEDI

We present a nonnegative rank factorization of a nonnegative matrix A for the case in which one or both of A(1)A and AA(1) are nonnegative. This gives, in particular, a known result for characterizing nonnegative matrices when A†A or AA† is nonnegative. We applied this characterization to the derivation of known results based on the characterization of nonnegative monotone matrices. A matrix A ...

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