Results 91 to 100 of about 1,491,574 (265)

A new perspective on computational complexity theory in Membrane Computing [PDF]

open access: yes, 2019
A single Turing machine can solve decision problems with an in nite number of instances. On the other hand, in the framework of membrane computing, a \solution" to an abstract decision problem consists of a family of membrane systems (where each ...
Orellana Martín, David   +4 more
core  

On the Constant-Depth Circuit Complexity of Generating Quasigroups [PDF]

open access: yesTheoretiCS
We investigate the constant-depth circuit complexity of the Isomorphism Problem, Minimum Generating Set Problem (MGS), and Sub(quasi)group Membership Problem (Membership) for groups and quasigroups (=Latin squares), given as input in terms of their ...
Nathaniel A. Collins   +3 more
doaj   +1 more source

Turing's algorithmic lens: from computability to complexity theory

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2013
[EN]: The decidability question, i.e., whether any mathematical statement could be computationally proven true or false, was raised by Hilbert and remained open until Turing answered it in the negative. Then, most efforts in theoretical computer science turned to complexity theory and the need to classify decidable problems according to their ...
Díaz Cort, Josep, Torras, Carme
openaire   +5 more sources

A novel perturbation based compression complexity measure for networks

open access: yesHeliyon, 2019
Measuring complexity of brain networks in the form of integrated information is a leading approach towards building a fundamental theory of consciousness.
Mohit Virmani, Nithin Nagaraj
doaj   +1 more source

Two-Dimensional Direction-of-Arrival Fast Estimation of Multiple Signals with Matrix Completion Theory in Coprime Planar Array

open access: yesSensors, 2018
In estimating the two-dimensional (2D) direction-of-arrival (DOA) using a coprime planar array, the main issues are the high complexity of spectral peak search and the limited degree of freedom imposed by the number of sensors.
Haiyun Xu   +4 more
doaj   +1 more source

Theories with self-application and computational complexity

open access: yesInformation and Computation, 2003
The author gives a very elegant and uniform characterization of various complexity classes -- namely FPtime, FPtimeLinspace, FPspace, and FLinspace -- in the context of Feferman's explicit mathematics [``Constructive theories of functions and classes'', Logic colloquium '78, Stud. Logic Found. Math. 97, 159--224 (1979; Zbl 0441.03022)]. It makes use of
openaire   +2 more sources

Arithmetic theories for computational complexity problems

open access: yesInformation and Control, 1986
Ein Ansatz zum genaueren Verständnis der Hierarchie von Komplexitätsklassen besteht darin, eine ''Übersetzung'' der komplexitätstheoretischen Probleme in entsprechende logische Probleme zu finden. Die Autoren verallgemeinern eine solche Konstruktion von R. A. DeMillo und R. J. Lipton (1979) und geben eine Reihe von Anwendungen an.
Homer, Steve, Reif, John
openaire   +1 more source

Time-memory trade-offs for index calculus in genus 3

open access: yesJournal of Mathematical Cryptology, 2015
In this paper, we present a variant of Diem's O˜(q)${\widetilde{O}(q)}$ index calculus algorithm to attack the discrete logarithm problem (DLP) in Jacobians of genus 3 non-hyperelliptic curves over a finite field 𝔽q.
Laine Kim, Lauter Kristin
doaj   +1 more source

Multiuser detection using evolutionary and local search heuristic algorithms

open access: yesSemina: Ciências Exatas e Tecnológicas, 2004
The characteristics of the main heuristic algorithms based on genetic evolution theory and local search, applied to a DS/CDMA multi-user detection problem in Flat Rayleigh fading channel, are shown.
Paul Jean Etienne Jeszensky   +2 more
doaj  

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