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169 results on '"Borowik, Grzegorz"'

1. Improved Mesh Processing using Distorted Pole Spherical Coordinates

Author

Borowik, Grzegorz, Balicki, Michał, Kasprzak, Michał, and Cukier, Piotr

Subjects
Computer Science - Graphics, I.3.5
Abstract

The Cartesian coordinate system is the most commonly used system in computer visualization. This is due to its ease of use and processing speed. However, it is not always suitable for a given problem. Angular measures often allow us to operate more efficiently on a three-dimensional model. When dealing with issues related to the processing of three-dimensional objects described using polygon meshes, it often happens that these standard systems do not satisfy specific properties that are crucial to us. The topic of the paper is to discuss a specific transformation to spherical coordinates with distorted poles, which allows us to eliminate singular points from the determined subset of the mesh and bypass inconvenient seam lines in its two-dimensional projection, which can hinder further calculations., Comment: 10 pages, 5 figures, submitted to 30th INTERNATIONAL CONFERENCE ON SYSTEMS ENGINEERING, ICSEng 2023, Las Vegas, NV, USA, August 22-24, 2023

Published
2023

2. On computing the symplectic $LL^T$ factorization

Author

Bujok, Maksymilian, Smoktunowicz, Alicja, and Borowik, Grzegorz

Subjects
Mathematics - Numerical Analysis, 15B10, 15B57, 65F25, 65F35
Abstract

We analyze two algorithms for computing the symplectic $LL^T$ factorization $A=LL^T$ of a given symmetric positive definite symplectic matrix $A$. The first algorithm $W_1$ is an implementation of the $HH^T$ factorization from [Dopico et al., 2009], see Theorem 5.2. The second one, algorithm $W_2$ uses both Cholesky and Reverse Cholesky decompositions of symmetric positive definite matrices. We presents a comparison of these algorithms and illustrate their properties by numerical experiments in MATLAB. A particular emphasis is given on simplecticity properties of the computed matrices in floating-point arithmetic.

Published
2022

3. Exploring the Convergence of Financial Forecasting with Multilateral Accounting and Artificial Intelligence

Author

Wedler, Jarosław Bogusław, Borowik, Grzegorz, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Selvaraj, Henry, editor, Chmaj, Grzegorz, editor, and Zydek, Dawid, editor

Published
2023
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4. Case Studies in Access Control

Author

Chaczko, Zenon, Borowik, Grzegorz, Alsawwaf, Mohammad, Kulbacki, Marek, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Selvaraj, Henry, editor, and Fujimoto, Takayuki, editor

Published
2023
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10. Reference Datasets for Analysis of Traditional Japanese and German Martial Arts

Author

Kluwak, Konrad, Klempous, Ryszard, Ito, Atsushi, Górski, Tomasz, Nikodem, Jan, Wojciechowski, Konrad, Rozenblit, Jerzy, Borowik, Grzegorz, Chaczko, Zenon, Bożejko, Wojciech, Kulbacki, Marek, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor

Published
2022
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11. Synthesis of Index Generation Function Using Linear and Functional Decomposition

Author

Borowik, Grzegorz, Łuba, Tadeusz, Wąsicki, Dariusz, Chmaj, Grzegorz, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Selvaraj, Henry, editor, Chmaj, Grzegorz, editor, and Zydek, Dawid, editor

Published
2021
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13. A First Attempt to Cloud-Based User Verification in Distributed System

Author

Wozniak, Marcin, Polap, Dawid, Borowik, Grzegorz, and Napoli, Christian

Subjects
Computer Science - Neural and Evolutionary Computing, Computer Science - Artificial Intelligence, Computer Science - Cryptography and Security, Computer Science - Distributed, Parallel, and Cluster Computing, 68T05, 68T10, 68T45, 68U10, 68W25, 68W99, I.2.6, I.2.10, I.4.8
Abstract

In this paper, the idea of client verification in distributed systems is presented. The proposed solution presents a sample system where client verification through cloud resources using input signature is discussed. For different signatures the proposed method has been examined. Research results are presented and discussed to show potential advantages., Comment: Final version published on: Asia-Pacific Conference on Computer Aided System Engineering (APCASE), pp. 226-231 (2015)

Published
2016
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15. Optimization on the Complementation Procedure Towards Efficient Implementation of the Index Generation Function

Author

Borowik Grzegorz

Subjects
data reduction, feature selection, indiscernibility matrix, logic synthesis, index generation function, Mathematics, QA1-939, Electronic computers. Computer science, QA75.5-76.95
Abstract

In the era of big data, solutions are desired that would be capable of efficient data reduction. This paper presents a summary of research on an algorithm for complementation of a Boolean function which is fundamental for logic synthesis and data mining. Successively, the existing problems and their proposed solutions are examined, including the analysis of current implementations of the algorithm. Then, methods to speed up the computation process and efficient parallel implementation of the algorithm are shown; they include optimization of data representation, recursive decomposition, merging, and removal of redundant data. Besides the discussion of computational complexity, the paper compares the processing times of the proposed solution with those for the well-known analysis and data mining systems. Although the presented idea is focused on searching for all possible solutions, it can be restricted to finding just those of the smallest size. Both approaches are of great application potential, including proving mathematical theorems, logic synthesis, especially index generation functions, or data processing and mining such as feature selection, data discretization, rule generation, etc. The problem considered is NP-hard, and it is easy to point to examples that are not solvable within the expected amount of time. However, the solution allows the barrier of computations to be moved one step further. For example, the unique algorithm can calculate, as the only one at the moment, all minimal sets of features for few standard benchmarks. Unlike many existing methods, the algorithm additionally works with undetermined values. The result of this research is an easily extendable experimental software that is the fastest among the tested solutions and the data mining systems.

Published
2018
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23. On computing the symplectic LLT factorization.

Author

Bujok, Maksymilian, Smoktunowicz, Alicja, and Borowik, Grzegorz

Subjects
FLOATING-point arithmetic, MATRICES (Mathematics)
Abstract

We analyze two algorithms for computing the symplectic factorization A = LLT of a given symmetric positive definite symplectic matrix A. The first algorithm W1 is an implementation of the HHT factorization from Dopico and Johnson (SIAM J. Matrix Anal. Appl. 31(2):650–673, 2009), see Theorem 5.2. The second one is a new algorithm W2 that uses both Cholesky and Reverse Cholesky decompositions of symmetric positive definite matrices. We present a comparison of these algorithms and illustrate their properties by numerical experiments in MATLAB. A particular emphasis is given on symplecticity properties of the computed matrices in floating-point arithmetic. [ABSTRACT FROM AUTHOR]

Published
2023
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24. Control System Design Based on Modern Embedded Systems

Author

Khamis, Ahmed, Zydek, Dawid, Borowik, Grzegorz, Naidu, D. Subbaram, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor

Published
2013
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25. Boolean Function Complementation Based Algorithm for Data Discretization

Author

Borowik, Grzegorz, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor

Published
2013
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26. On Memory Capacity to Implement Logic Functions

Author

Borowik, Grzegorz, Łuba, Tadeusz, Tomaszewicz, Paweł, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor

Published
2012
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27. Method of Generating Irreducible Polynomials over GF(3) on the Basis of Trinomials

Author

Borowik, Grzegorz, Paszkiewicz, Andrzej, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor

Published
2012
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28. Trading-Off Error Detection Efficiency with Implementation Cost for Sequential Circuits Implemented with FPGAs

Author

Borowik, Grzegorz, Kraśniewski, Andrzej, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor

Published
2012
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30. Decomposing Pattern Matching Circuit

Author

Borowik, Grzegorz, Łuba, Tadeusz, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Moreno-Díaz, Roberto, editor, Pichler, Franz, editor, and Quesada-Arencibia, Alexis, editor

Published
2009
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31. Neural Networks Classification for Training of Five German Longsword Mastercuts - A Novel Application of Motion Capture: Analysis of Performance of Sword Fencing in the Historical European Martial Arts (HEMA) Domain

Author

Klempous, Ryszard, primary, Kluwak, Konrad, additional, Atsushi, Ito, additional, Gorski, Tomasz, additional, Nikodem, Jan, additional, Bozejko, Wojciech, additional, Chaczko, Zenon, additional, Borowik, Grzegorz, additional, Rozenblit, Jerzy, additional, and Kulbacki, Marek, additional

Published
2021
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39. The data-based methodology for crime forecasting

Author

Wawrzyniak, Zbigniew M., primary, Pytlak, Radoslaw, additional, Cichosz, Paweł, additional, Jankowski, Stanisław, additional, Borowik, Grzegorz, additional, Olszewski, Wojciech, additional, Szczechla, Eliza, additional, and Michalak, Paweł, additional

Published
2020
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47. Video signals integrator: configuration database

Author

Bukowiecka, Danuta, primary, Tyburska, Agata, additional, Struniawski, Jarosław, additional, Jastrzebski, Pawel, additional, Jewartowski, Blazej, additional, Poźniak, Krzysztof T., additional, Kasprowicz, Grzegorz, additional, Zabołotny, Wojciech, additional, Pastuszak, Grzegorz, additional, Buchowicz, Andrzej, additional, Borowik, Grzegorz, additional, Gąska, Michał, additional, Jarosiński, Jakub, additional, Brawata, Sebastian, additional, Pawelski, Daniel, additional, Katewicz, Ewelina, additional, Frasunek, Przemysław, additional, Jurkiewicz, Rafał, additional, Nalbach-Moszynska, Małgorzata, additional, Sokół, Grzegorz, additional, and Wawrzusiak, Radosław, additional

Published
2019
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50. Video Signals Integrator: Configuration Database.

Author

Bukowiecka, Danuta, Tyburska, Agata, Struniawski, Jarosław, Jastrzebski, Pawel, Jewartowski, Blazej, Poźniak, Krzysztof, Kasprowicz, Grzegorz, Zabołotny, Wojciech, Pastuszak, Grzegorz, Buchowicz, Andrzej, Borowik, Grzegorz, Gąska, Michał, Jarosiński, Jakub, Brawata, Sebastian, Pawelski, Daniel, Katewicz, Ewelina, Frasunek, Przemysław, Jurkiewicz, Rafał, Nalbach-Moszynska, Małgorzata., and Sokół, Grzegorz

Published
2019
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