Results 11 to 20 of about 1,406,601 (220)

Canonical Decompositions of Completely Nonunitary Contractions

open access: yesJournal of Mathematical Analysis and Applications, 1984
The author discusses with an application the isometric part and the coisometric part of a completely nonunitary contraction on a Hilbert space. [Probably, researchers who wish to know more general decomposition theorems should refer to \textit{W. Szymański}, Stud. Math. 50, 265-280 (1974; Zbl 0264.47036), \textit{M. Fujii}, \textit{Y. Kato}, Math. Jap.,
N. Levan
semanticscholar   +3 more sources

Canonical tree-decompositions of finite graphs I. Existence and algorithms [PDF]

open access: greenJ. Comb. Theory B, 2013
We construct tree-decompositions of graphs that distinguish all their k-blocks and tangles of order k, for any fixed integer k. We describe a family of algorithms to construct such decompositions, seeking to maximize their diversity subject to the ...
Johannes Carmesin   +3 more
openalex   +3 more sources

Canonical Decompositions of Certain Generalized Brownian Bridges [PDF]

open access: yesElectronic Communications in Probability, 2002
We define a generalized Brownian bridge and we provide some information about its filtration. Two decompositions of this process as a semi-martingale are given.
L. Alili
semanticscholar   +4 more sources

Belief functions contextual discounting and canonical decompositions

open access: yesInternational Journal of Approximate Reasoning, 2012
In this article, the contextual discounting of a belief function, a classical discounting generalization, is extended and its particular link with the canonical disjunctive decomposition is highlighted. A general family of correction mechanisms allowing one to weaken the information provided by a source is then introduced, as well as the dual of this ...
D. Mercier, E. Lefevre, F. Delmotte
semanticscholar   +3 more sources

Correcting variance and polarity indeterminacies of extracted components by canonical polyadic decomposition

open access: diamondBrain-Apparatus Communication
Background Back-projection has been used to correct the variance and polarity indeterminacies for the independent component analysis. The variance and polarity of the components are essential features of neuroscience studies.Objective This work extends ...
Yuxing Hao   +4 more
doaj   +2 more sources

Note on the canonical decomposition of contraction [PDF]

open access: bronzeTohoku Mathematical Journal, 1964
Teishirô Saitô, Takashi Yoshino
openalex   +3 more sources

Canonical decompositions in monadically stable and bounded shrubdepth graph classes [PDF]

open access: yesInternational Colloquium on Automata, Languages and Programming, 2023
We use model-theoretic tools originating from stability theory to derive a result we call the Finitary Substitute Lemma, which intuitively says the following.
Pierre Ohlmann   +3 more
semanticscholar   +1 more source

Semistable torsion classes and canonical decompositions in Grothendieck groups [PDF]

open access: yesProceedings of the London Mathematical Society, 2021
We study two classes of torsion classes that generalize functorially finite torsion classes, that is, semistable torsion classes and morphism torsion classes.
Sotaro Asai, O. Iyama
semanticscholar   +1 more source

Generalized Canonical Polyadic Tensor Decomposition [PDF]

open access: yesSIAM Review, 2020
Tensor decomposition is a fundamental unsupervised machine learning method in data science, with applications including network analysis and sensor data processing. This work develops a generalized canonical polyadic (GCP) low-rank tensor decomposition that allows other loss functions besides squared error.
Hong, David   +2 more
openaire   +2 more sources

Cross Tensor Approximation Methods for Compression and Dimensionality Reduction

open access: yesIEEE Access, 2021
Cross Tensor Approximation (CTA) is a generalization of Cross/skeleton matrix and CUR Matrix Approximation (CMA) and is a suitable tool for fast low-rank tensor approximation.
Salman Ahmadi-Asl   +6 more
doaj   +1 more source

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