Results 81 to 90 of about 2,052,954 (190)

On the geometric interpretation of the nonnegative rank [PDF]

open access: yes
The nonnegative rank of a nonnegative matrix is the minimum number of nonnegative rank-one factors needed to reconstruct it exactly. The problem of determining this rank and computing the corresponding nonnegative factors is difficult; however it has ...
GILLIS, Nicolas, GLINEUR, François
core  

Development of a Real Time Sparse Non-Negative Matrix Factorization Module for Cochlear Implants by Using xPC Target

open access: yes, 2013
Cochlear implants (CIs) require efficient speech processing to maximize information transmission to the brain, especially in noise. A novel CI processing strategy was proposed in our previous studies, in which sparsity-constrained non-negative matrix ...
Mark Lutman   +7 more
core   +1 more source

On the effect of the perturbation of a nonnegative matrix on its Perron eigenvector [PDF]

open access: yes, 1982
Elsner L, Johnson CR, Neumann MM. On the effect of the perturbation of a nonnegative matrix on its Perron eigenvector. Czechoslovak Mathematical Journal.
Elsner, Ludwig F.   +5 more
core   +1 more source

Clustering algorithm for symmetric nonnegative matrix factorization based on adaptive optimization graph

open access: yes四川大学学报. 自然科学版
Clustering is an important unsupervised learning technique in machine learning and artificial intelligence.Clustering algorithms can uncover latent structures and patterns from unlabeled data, and provide strong support for subsequent data analysis ...
GAO Hai-Yan, HE Wen-Hui
doaj  

TAMAVAQ/Q‐TAMAVAQ: Fubini–study CTQW graph transport and constrained margin‐based ranking for neoantigen candidate prioritization in lower‐grade glioma and glioblastoma

open access: yesClinical and Translational Discovery, Volume 6, Issue 6, December 2026.
Abstract Background Personalized neoantigen vaccine design for glioma requires the integration of mutation‐derived peptide evidence, molecular properties, HLA coverage and finite manufacturing capacity. TAMAVAQ/Q‐TAMAVAQ combines quantum‐geometric descriptor representation with graph transport and auditable peptide‐panel assembly.
Ioannis Grigoriadis
wiley   +1 more source

The 2‐D Orthogonal Packing Problem With Multiple Levels of Prioritization: A Spatial Optimization Perspective

open access: yesNaval Research Logistics (NRL), Volume 73, Issue 8, Page 1279-1300, December 2026.
ABSTRACT This paper addresses two‐dimensional orthogonal packing within a confined space, integrating bin packing principles with facility layout concepts to address scenarios in which items must not only fit but also be arranged according to spatial priorities.
William K. Kirschenman   +4 more
wiley   +1 more source

On the Complexity of the Paper Selection Problem for the Italian Research Quality Evaluation (VQR)

open access: yesNetworks, Volume 88, Issue 4, Page 437-452, December 2026.
ABSTRACT This work addresses the paper selection problem that each Italian university and department faced in the context of the research quality evaluation (VQR) of the Italian university system for the period 2020–2024. Given the set of researchers of a university and their associated papers, the problem consists of selecting a fixed number of ...
Francesco Carrabs   +2 more
wiley   +1 more source

Statistical Monitoring of Multivariate Count Data From Real‐Time Particle Counters

open access: yesQuality and Reliability Engineering International, Volume 42, Issue 8, Page 4765-4809, December 2026.
ABSTRACT In the pharmaceutical industry, production environments are monitored for bacterial contamination. Particle counters are increasingly investigated for real‐time monitoring of viable microorganisms using count data for different particle size intervals.
Mona Emampour   +2 more
wiley   +1 more source

Segmented Nonnegative Matrix Factorization for Hyperspectral Image Classification

open access: yes, 2023
Segmented Nonnegative Matrix Factorization for Hyperspectral Image ...
MI Afjal (15370294)   +5 more
core  

On the additive image of zeroth persistent homology

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract For a category X$X$ and a finite field F$F$, we study the additive image of the functor H0(−;F)∗:rep(X,Top)→rep(X,VectF)$\operatorname{H}_0(-;F)_* \colon \operatorname{rep}(X, \mathbf {Top}) \rightarrow \operatorname{rep}(X, \mathbf {Vect}_F)$, or equivalently, of the free functor rep(X,Set)→rep(X,VectF)$\operatorname{rep}(X, \mathbf {Set ...
Ulrich Bauer   +3 more
wiley   +1 more source

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