Showing 1 - 4 results of 4 for search '"Polyhedral combinatorics"', query time: 0.12s Refine Results
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    On Rationality of Nonnegative Matrix Factorization by Chistikov, D, Kiefer, S, Marusic, I, Shirmohammadi, M, Worrell, J

    Published 2017
    “…NMF has a wide variety of applications, in- cluding bioinformatics, chemometrics, communication com- plexity, machine learning, polyhedral combinatorics, among many others. A longstanding open question, posed by Cohen and Rothblum in 1993, is whether every rational matrix M has an NMF with minimal d whose factors W and H are also rational. …”
    Conference item
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    Exact information ratios for secret sharing on small graphs with girth at least 5 by Harsányi Károly, Ligeti Péter

    Published 2019-06-01
    “…In this paper, the information ratios of all but one graph-based schemes on 8 or 9 vertices with a girth at least 5 and all graph-based schemes on 10 vertices and 10 edges with a girth at least 5 are determined using two polyhedral combinatoric tools: the entropy method and covering with stars. …”
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