Results 21 to 30 of about 13,849 (192)
Approximate cone factorizations and lifts of polytopes [PDF]
, 2013 In this paper we show how to construct inner and outer convex approximations of a polytope from an approximate cone factorization of its slack matrix.
Gouveia, João +2 more
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A Provable Splitting Approach for Symmetric Nonnegative Matrix Factorization
IEEE Transactions on Knowledge and Data Engineering, 2021 The symmetric Nonnegative Matrix Factorization (NMF), a special but important class of the general NMF, has found numerous applications in data analysis such as various clustering tasks. Unfortunately, designing fast algorithms for the symmetric NMF is not as easy as for its nonsymmetric counterpart, since the latter admits the splitting property that ...
Li, Xiao +3 more
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Coordinate Descent Methods for Symmetric Nonnegative Matrix Factorization
IEEE Transactions on Signal Processing, 2015 25 pages, 5 figures, 7 tables. Main changes: comparison with another symNMF algorithm (namely, BetaSNMF), and correction of an error in the convergence ...
Vandaele, Arnaud +4 more
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Microbial community pattern detection in human body habitats via ensemble clustering framework [PDF]
, 2014 The human habitat is a host where microbial species evolve, function, and continue to evolve. Elucidating how microbial communities respond to human habitats is a fundamental and critical task, as establishing baselines of human microbiome is essential ...
Chua, Hon-Nian +5 more
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Frontiers in Genetics, 2018 Increasing evidence has indicated that microRNAs (miRNAs) are associated with numerous human diseases. Studying the associations between miRNAs and diseases contributes to the exploration of effective diagnostic and treatment approaches for diseases ...
Yan Zhao, Xing Chen, Jun Yin
doaj +1 more source
Approximating a similarity matrix by a latent class model: A reappraisal of additive fuzzy clustering [PDF]
, 2009 Let Q be a given n×n square symmetric matrix of nonnegative elements between 0 and 1, similarities. Fuzzy clustering results in fuzzy assignment of individuals to K clusters.
Bink, M.C.A.M. +3 more
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On reduced rank nonnegative matrix factorization for symmetric nonnegative matrices
Linear Algebra and its Applications, 2004 Let \(V\) be a nonnegative matrix. The nonnegative matrix factorization problem consists of finding nonnegative matrix factors \(W \in \mathbb{R}^{m,r}\) and \(H \in \mathbb{R}^{r,n}\) such that \(V \approx WH\). \textit{D. D. Lee} and \textit{H. S. Seung} [Unsupervised learning by convex and conic coding, Adv. Neural Inf. Process. Syst.
Catral, M. +3 more
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CASNMF: A Converged Algorithm for symmetrical nonnegative matrix factorization [PDF]
Neurocomputing, 2018 Abstract Nonnegative matrix factorization (NMF) is a very popular unsupervised or semi-supervised learning method useful in various applications including data clustering, image processing, and semantic analysis of documents. This study focuses on Symmetric NMF (SNMF), which is a special case of NMF and can be useful in network analysis.
Li-Ping Tian +4 more
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Lyrics-to-Audio Alignment by Unsupervised Discovery of Repetitive Patterns in Vowel Acoustics
IEEE Access, 2017 Most of the previous approaches to lyrics-to-audio alignment used a pre-developed automatic speech recognition (ASR) system that innately suffered from several difficulties to adapt the speech model to individual singers.
Sungkyun Chang, Kyogu Lee
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Lifts of convex sets and cone factorizations [PDF]
, 2012 In this paper we address the basic geometric question of when a given convex set is the image under a linear map of an affine slice of a given closed convex cone.
Barvinok A +6 more
core +4 more sources