Results 61 to 70 of about 5,239,116 (369)

A Survey on the Computational Complexity of Coloring Graphs with Forbidden Subgraphs [PDF]

open access: yesJournal of Graph Theory, 2014
For a positive integer k, a k‐coloring of a graph G=(V,E) is a mapping c:V→{1,2,...,k} such that c(u)≠c(v) whenever uv∈E . The Coloring problem is to decide, for a given G and k, whether a k‐coloring of G exists.
P. Golovach   +3 more
semanticscholar   +1 more source

On the Complexity of Computing Treelength [PDF]

open access: yesDiscrete Applied Mathematics, 2007
AbstractWe resolve the computational complexity of determining the treelength of a graph, thereby solving an open problem of Dourisboure and Gavoille, who introduced this parameter, and asked to determine the complexity of recognizing graphs of a bounded treelength Dourisboure and Gavoille (2007) [6].
openaire   +3 more sources

The Computational Complexity of Duality

open access: yes, 2016
We show that for any given norm ball or proper cone, weak membership in its dual ball or dual cone is polynomial-time reducible to weak membership in the given ball or cone.
Friedland, Shmuel, Lim, Lek-Heng
core   +1 more source

An overview on polynomial approximation of NP-hard problems [PDF]

open access: yesYugoslav Journal of Operations Research, 2009
The fact that polynomial time algorithm is very unlikely to be devised for an optimal solving of the NP-hard problems strongly motivates both the researchers and the practitioners to try to solve such problems heuristically, by making a trade-off between
Paschos Vangelis Th.
doaj   +1 more source

An overview of computational complexity [PDF]

open access: yesCommunications of the ACM, 1983
An historical overview of computational complexity is presented. Emphasis is on the fundamental issues of defining the intrinsic computational complexity of a problem and proving upper and lower bounds on the complexity of problems. Probabilistic and parallel computation are discussed.
openaire   +6 more sources

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Reducing Computational Complexity of Quantum Correlations

open access: yes, 2015
We address the issue of reducing the resource required to compute information-theoretic quantum correlation measures like quantum discord and quantum work deficit in two qubits and higher dimensional systems.
A. S. Holevo   +12 more
core   +1 more source

Depth, Highness and DNR degrees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2017
We study Bennett deep sequences in the context of recursion theory; in particular we investigate the notions of O(1)-deepK, O(1)-deepC , order-deep K and order-deep C sequences. Our main results are that Martin-Loef random sets are not order-deepC , that
Philippe Moser, Frank Stephan
doaj   +1 more source

Membrane fission: A computational complexity perspective

open access: yesComplex, 2016
Membrane fission is a process by which a biological membrane is split into two new ones in the manner that the content of the initial membrane is separated and distributed between the new membranes.
Luis F. Macías-Ramos   +4 more
semanticscholar   +1 more source

Mechanisms and kinetic assays of aminoacyl‐tRNA synthetases

open access: yesFEBS Letters, EarlyView.
Accurate protein synthesis is crucial for life. The key players are aminoacyl‐tRNA synthetases (AARSs), which read the genetic code by pairing cognate amino acids and tRNAs. AARSs establish high amino acid selectivity by employing physicochemical limits in molecular recognition.
Igor Zivkovic   +2 more
wiley   +1 more source

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