Cybernetics and Information Technologies Volume 20 Issue 6

Journal Article

Preface

Karaivanova, Aneta; Margenov, Svetozar

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0055

AbstractWe are pleased to present the special issue “New developments in scalable computing” of the scientific journal “Cybernetics and Information Technologies”. For this issue (Volume 20, No 6 – December 2020), we have selected 19 papers which have gone through peer review and represent novel...

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Journal Article

Performance Optimization System for Hadoop and Spark Frameworks

Astsatryan, Hrachya; Kocharyan, Aram; Hagimont, Daniel; Lalayan, Arthur

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0056

AbstractThe optimization of large-scale data sets depends on the technologies and methods used. The MapReduce model, implemented on Apache Hadoop or Spark, allows splitting large data sets into a set of blocks distributed on several machines. Data compression reduces data size and transfer time...

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Journal Article

New Uniform Subregular Parallelisms of PG(3, 4) Invariant under an Automorphism of Order 2

Betten, Anton; Topalova, Stela; Zhelezova, Svetlana

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0057

AbstractA spread in PG(n, q) is a set of lines which partition the point set. A parallelism is a partition of the set of lines by spreads. A parallelism is uniform if all its spreads are isomorphic. Up to isomorphism, there are three spreads of PG(3, 4) – regular, subregular and aregular....

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Journal Article

Two-Stage Search-Based Approach for Determining and Sorting of Mountain Hiking Routes Using Directed Weighted Multigraph

Dimitrova, Zornitsa; Dimitrov, Vasil; Borissova, Daniela; Garvanov, Ivan; Garvanova, Magdalena

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0058

AbstractThe mountain hiking destinations become more popular as this is one of the possible ways to cope with workplace stress and to prevent burnout. In contrast to the tourist destinations, mountain hiking requires special attention due to the variety of mountain trails satisfying the same...

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Journal Article

New Local Search Procedure for Workforce Planning Problem

Fidanova, Stefka; Luque, Gabriel

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0059

AbstractOptimization of workforce planning is important for any production area. This leads to an improvement in production process. The aim is minimization of the assignment costs of the workers, who will do the jobs. The problem is to select and assign employers to the jobs to be performed. The...

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Journal Article

High Performance Machine Learning Models of Large Scale Air Pollution Data in Urban Area

Gocheva-Ilieva, Snezhana G.; Ivanov, Atanas V.; Livieris, Ioannis E.

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0060

AbstractPreserving the air quality in urban areas is crucial for the health of the population as well as for the environment. The availability of large volumes of measurement data on the concentrations of air pollutants enables their analysis and modelling to establish trends and dependencies in...

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Journal Article

Evaluating Machine Learning Approaches for Discovering Optimal Sets of Projection Operators for Quantum State Tomography of Qubit Systems

Ivanova-Rohling, Violeta N.; Rohling, Niklas

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0061

AbstractFinding optimal measurement schemes in quantum state tomography is a fundamental problem in quantum computation. It is known that for non-degenerate operators the optimal measurement scheme is based on mutually unbiassed bases. This paper is a follow up from our previous work, where we...

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Journal Article

A New Class of “Growth Functions” with Polynomial Variable Transfer Generated by Real Reaction Networks

Kyurkchiev, Nikolay

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0062

AbstractIn [4, 5], two classes of growth models with “exponentially variable transfer” and “correcting amendments of Bateman-Gompertz-Makeham-type” based on a specific extended reaction network have been studied [1]. In this article we will look at the new scheme with “polynomial variable...

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Journal Article

Comments on the Half Logistic Inverse Rayleigh (HLIR) cdf with “Polynomial Variable Transfer”. Some Applications

Kyurkchiev, Nikolay; Iliev, Anton; Rahnev, Asen

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0063

AbstractOn the base of the Half Logistic – G family of distributions proposed by Cordeiro, Alizadeh and Marinho [2] some mathematical properties are investigated by Almarashi et al. [1]. We study the “saturation” to the horizontal asymptote: t=1 by the new growth function M(t) in the Hausdorff...

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Journal Article

Performance Analysis of a Scalable Algorithm for 3D Linear Transforms on Supercomputer with Intel Processors/Co-Processors

Lirkov, Ivan

2020 Cybernetics and Information Technologies

doi:10.2478/cait-2020-0064

AbstractPractical realizations of 3D forward/inverse separable discrete transforms, such as Fourier transform, cosine/sine transform, etc. are frequently the principal limiters that prevent many practical applications from scaling to a large number of processors. Existing approaches, which are...

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Cybernetics and Information Technologies Volume 20 Issue 6

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