Computing
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A set of compact finite-difference approximations to first and second derivatives, related to the extended Numerov method of Chawla on nonuniform grids
Computing - - 2007
The extended Numerov scheme of Chawla, adopted for nonuniform grids, is a useful
compact finite-difference discretisation, suitable for the numerical solution of
boundary value problems in singularly perturbed second order non-linear ordinary
differential equations. A new set of three-point compact approximations to first
and second derivatives, related to the Chawla scheme and valid for nonunifor...
Particle swarm optimization based on temporal-difference learning for solving multi-objective optimization problems
Computing - Tập 105 - Trang 1795-1820 - 2023
Multi-objective evolutionary algorithms have become the most important method to
deal with multi-objective optimization problems (MOP). To improve the
performance of particle swarm optimization (PSO) in addressing MOPs, a
multi-objective PSO based on temporal-difference learning (TDLMOPSO) is proposed
in this paper. The iteration process of TDLMOPSO is transformed into a Markov
decision process, p...
Adaptive federated learning scheme for recognition of malicious attacks in an IoT network
Computing - - Trang 1-16 - 2023
The Internet of Things (IoT) is crucial for deploying a novel Artificial
Intelligence (AI) model for both network and application management. However,
using classical centralized learning algorithms in the IoT environment is
challenging, given massively distributed private datasets. Advancements in AI
have helped us solve various use cases, but it operates under two significant
challenges. Firstly...
Implicitization of Parametric Curves via Lagrange Interpolation
Computing - Tập 77 - Trang 379-386 - 2006
A simple algorithm for finding the implicit equation of a parametric plane curve
given by its parametric equations is presented. The algorithm is based on an
efficient computation of the Bézout resultant and Lagrange interpolation. One of
main features of our approach is the fact that it considerably reduces the
problem of computing intermediate expressions.
Context recognition and ubiquitous computing in smart cities: a systematic mapping
Computing - Tập 103 - Trang 801-825 - 2021
Smart cities are one of the emerging domains for computational applications.
Many of these applications may benefit from the ubiquitous computing paradigm to
provide better services. An important aspect of these applications is how to
obtain data about their users and understand them. Context-aware approaches has
been proven to be successful in understanding these data. These solutions obtain
data...
Numerical solution of the Boltzmann equation on the uniform grid
Computing - Tập 69 - Trang 163-186 - 2002
In the present paper a new numerical method for the Boltzmann equation is
developed. The gain part of the collision integral is written in a form which
allows its numerical computation on the uniform grid to be carried out
efficiently. The amount of numerical work is shown to be of the order O(n
6log(n)) for the most general model of interaction and of the order O(n 6) for
the Variable Hard Sphere...
MDER: modified degree with exclusion ratio algorithm for influence maximisation in social networks
Computing - Tập 104 - Trang 359-382 - 2021
The online social network has become an integral part of our day to life and
serves as an excellent platform for sharing ideas, opinions, and products.
Influence maximization (IM) is a widely studied topic in the area of social
network analysis. The objective of IM is to find influential nodes that can
disseminate information to a larger extent in the network. Many local and global
centrality meas...
A second order monotone upwind scheme
Computing - Tập 36 - Trang 57-67 - 1986
We analyze a special finite difference scheme of upwind type for an ordinary
singularly perturbed nonlinear boundary value problem. In particular we prove
the uniqueness and monotone dependence upon the right hand sides of the discrete
solutions and the second order accuracy in the global domain.
Distribution of Lattice Points
Computing - Tập 78 - Trang 173-193 - 2006
We discuss the lattice structure of congruential random number generators and
examine figures of merit. Distribution properties of lattice measures in various
dimensions are demonstrated by using large numerical data. Systematic search
methods are introduced to diagnose multiplier areas exhibiting good, bad and
worst lattice structures. We present two formulae to express multipliers
producing wors...
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