Waldemar W. Koczkodaj

Publication Activity (10 Years)

Years Active: 1991-2024
Publications (10 Years): 22

Top Topics

Pairwise Comparison

Preference Learning

Differential Evolution

Top Venues

Int. J. Approx. Reason.

Fundam. Informaticae

Appl. Math. Comput.

Publications

Julio Benítez, Waldemar W. Koczkodaj, Adam Kowalczyk
Computationally efficient orthogonalization for pairwise comparisons method. Appl. Math. Comput. 473 (2024)
Waldemar W. Koczkodaj, Witold Pedrycz, Alexander Pigazzini, Yingli Song, Jacek Szybowski
On homology groups for pairwise comparisons method. Inf. Sci. 681 (2024)
Julio Benítez, Waldemar W. Koczkodaj, Adam Kowalczyk
Computationally efficient orthogonalization for pairwise comparisons method. CoRR (2024)
Waldemar W. Koczkodaj, M. Mazurek, Witold Pedrycz, E. Rogalska, R. Roth, Dominik Strzalka, A. Szymanska, Alicja Wolny-Dominiak, Marc Woodbury-Smith, O. S. Xue, R. Zbyrowski
Combating harmful Internet use with peer assessment and differential evolution. CoRR (2023)
Waldemar W. Koczkodaj, Victor W. Marek, Yusuf Yayli
Pairwise comparisons matrix decomposition into approximation and orthogonal component using Lie theory. Int. J. Approx. Reason. 139 (2021)
Waldemar W. Koczkodaj, Ryszard Smarzewski, Jacek Szybowski
On Orthogonal Projections on the Space of Consistent Pairwise Comparisons Matrices. CoRR (2020)
Waldemar W. Koczkodaj, Ryszard Smarzewski, Jacek Szybowski
On Orthogonal Projections on the Space of Consistent Pairwise Comparisons Matrices. Fundam. Informaticae 172 (4) (2020)
Waldemar W. Koczkodaj, Fang Liu, Victor W. Marek, Jirí Mazurek, Miroslaw Mazurek, Ludmil Mikhailov, Cenap Özel, Witold Pedrycz, Artur Przelaskowski, Andrew Schumann, Ryszard Smarzewski, Dominik Strzalka, Jacek Szybowski, Yusuf Yayli
On the use of group theory to generalize elements of pairwise comparisons matrix: A cautionary note. Int. J. Approx. Reason. 124 (2020)
Waldemar W. Koczkodaj, Tamar Kakiashvili, Feng Li, Alicja Wolny-Dominiak, Jolanta Masiak
Optimizing predictability of rating scales by differential evolution for the use by collective intelligent information and database systems. J. Intell. Fuzzy Syst. 37 (6) (2019)
Viera Cernanová, Waldemar W. Koczkodaj, Jacek Szybowski
Inconsistency of special cases of pairwise comparisons matrices. Int. J. Approx. Reason. 95 (2018)
Waldemar W. Koczkodaj, Feng Li, Alicja Wolny-Dominiak
RatingScaleReduction package: stepwise rating scale item reduction without predictability loss. R J. 10 (1) (2018)
Waldemar W. Koczkodaj, Pawel Dymora, Miroslaw Mazurek, Dominik Strzalka
Consistency-Driven Pairwise Comparisons Approach to Software Product Management and Quality Measurement. DepCoS-RELCOMEX (2018)
Waldemar W. Koczkodaj, Roman Urban
Axiomatization of inconsistency indicators for pairwise comparisons. Int. J. Approx. Reason. 94 (2018)
Waldemar W. Koczkodaj, Jean-Pierre Magnot, Jirí Mazurek, James F. Peters, Hojjat Rakhshani, Michael Soltys, Dominik Strzalka, Jacek Szybowski, Arturo Tozzi
On normalization of inconsistency indicators in pairwise comparisons. Int. J. Approx. Reason. 86 (2017)
Waldemar W. Koczkodaj, Jean-Pierre Magnot, Jirí Mazurek, James F. Peters, Hojjat Rakhshani, Michael Soltys, Dominik Strzalka, Jacek Szybowski, Arturo Tozzi
On normalization of inconsistency indicators in pairwise comparisons. CoRR (2017)
Waldemar W. Koczkodaj, Tamar Kakiashvili, A. Szymanska, J. Montero-Marin, Ricardo Araya, Javier García-Campayo, K. Rutkowski, Dominik Strzalka
How to reduce the number of rating scale items without predictability loss? Scientometrics 111 (2) (2017)
Waldemar W. Koczkodaj, Ludmil Mikhailov, Grzegorz Redlarski, Michael Soltys, Jacek Szybowski, Gaik Tamazian, Eliza Wajch, Kevin Kam Fung Yuen
Important Facts and Observations about Pairwise Comparisons (the special issue edition). Fundam. Informaticae 144 (3-4) (2016)
Waldemar W. Koczkodaj, Jacek Szybowski, Eliza Wajch
Inconsistency indicator maps on groups for pairwise comparisons. Int. J. Approx. Reason. 69 (2016)
Waldemar W. Koczkodaj, Jacek Szybowski
The Limit of Inconsistency Reduction in Pairwise Comparisons. Int. J. Appl. Math. Comput. Sci. 26 (3) (2016)
Waldemar W. Koczkodaj
Pairwise Comparisons Rating Scale Paradox. Trans. Comput. Collect. Intell. 22 (2016)
Waldemar W. Koczkodaj, Anna Tatarczak
Developing Coalitions by Pairwise Comparisons: a Preliminary Study. FedCSIS (Position Papers) (2016)
Grzegorz Redlarski, Waldemar W. Koczkodaj, Marek Krawczuk, Janusz Siebert, Katarzyna E. Mrozik, Aleksander Palkowski, Piotr Tojza
A Conception of Pairwise Comparisons Model for Selection of Appropriate Body Surface Area Calculation Formula. FedCSIS (2016)
Waldemar W. Koczkodaj, Jacek Szybowski
The key properties of inconsistency indicators for a triad in pairwise comparison matrices. CoRR (2015)
Waldemar W. Koczkodaj, Jacek Szybowski
Axiomatization of Inconsistency Indicators for Pairwise Comparisons Matrices Revisited. CoRR (2015)
Sándor Bozóki, Jándor Fülöp, Waldemar W. Koczkodaj
An LP-based inconsistency monitoring of pairwise comparison matrices. CoRR (2015)
Michael W. Herman, Waldemar W. Koczkodaj
A Monte Carlo Study of Pairwise Comparisons. CoRR (2015)
Waldemar W. Koczkodaj, Jacek Szybowski
On the Convergence of the Pairwise Comparisons Inconsistency Reduction Process. CoRR (2015)
Jándor Fülöp, Waldemar W. Koczkodaj, Stanislaw J. Szarek
A different perspective on a scale for pairwise comparisons. CoRR (2015)
Waldemar W. Koczkodaj, Jacek Szybowski
Pairwise comparisons simplified. Appl. Math. Comput. 253 (2015)
Waldemar W. Koczkodaj, Michael W. Herman, Marian Orlowski
Managing Null Entries in Pairwise Comparisons. CoRR (2015)
Waldemar W. Koczkodaj, Marek Kosiek, Jacek Szybowski, Ding Xu
Fast Convergence of Distance-based Inconsistency in Pairwise Comparisons. Fundam. Informaticae 137 (3) (2015)
Waldemar W. Koczkodaj, Marian Orlowski
An Algorithm for the Optimal Consistent Approximation to a Pairwise Comparisons Matrix by Orthogonal Projections. CoRR (2015)
Waldemar W. Koczkodaj
Pairwise Comparisons Rating Scale Paradox. CoRR (2015)
Waldemar W. Koczkodaj, Konrad Kulakowski, Antoni Ligeza
On the quality evaluation of scientific entities in Poland supported by consistency-driven pairwise comparisons method. Scientometrics 99 (3) (2014)
Waldemar W. Koczkodaj, Ryszard Szwarc
On Axiomatization of Inconsistency Indicators for Pairwise Comparisons. Fundam. Informaticae 132 (4) (2014)
Waldemar W. Koczkodaj, Jacek Szybowski
Pairwise Comparisons Simplified. CoRR (2013)
Yiqun Gan, Tamar Kakiashvili, Waldemar W. Koczkodaj, Feng Li
A note on relevance of diagnostic classification and rating scales used in psychiatry. Comput. Methods Programs Biomed. 112 (1) (2013)
Waldemar W. Koczkodaj, Ryszard Szwarc
On Axiomatization of Inconsistency Indicators in Pairwise Comparisons. CoRR (2013)
Tamar Kakiashvili, Waldemar W. Koczkodaj, Marc Woodbury-Smith
Improving the medical scale predictability by the pairwise comparisons method: Evidence from a clinical data study. Comput. Methods Programs Biomed. 105 (3) (2012)
Jándor Fülöp, Waldemar W. Koczkodaj, S. J. Szarek
On some convexity properties of the Least Squares Method for pairwise comparisons matrices without the reciprocity condition. J. Glob. Optim. 54 (4) (2012)
Mohammed Alqarni, Yassen Arabi, Tamar Kakiashvili, Mohammed Khedr, Waldemar W. Koczkodaj, J. Leszek, Artur Przelaskowski, K. Rutkowski
Improving the predictiveness of ICU medical scales by the method of pairwise comparisons. FedCSIS (2011)
Marcin Anholcer, Volodymyr Babiy, Sándor Bozóki, Waldemar W. Koczkodaj
A simplified implementation of the least squares solution for pairwise comparisons matrices. Central Eur. J. Oper. Res. 19 (4) (2011)
Sándor Bozóki, Jándor Fülöp, Waldemar W. Koczkodaj
An LP-based inconsistency monitoring of pairwise comparison matrices. Math. Comput. Model. 54 (1-2) (2011)
Waldemar W. Koczkodaj, Vova Babiy, Agnieszka D. Bogobowicz, Ryszard Janicki, Alan Wassyng
Selecting the best strategy in a software certification process. IMCSIT (2010)
Jándor Fülöp, Waldemar W. Koczkodaj, S. J. Szarek
A Different Perspective on a Scale for Pairwise Comparisons. Trans. Comput. Collect. Intell. 1 (2010)
Waldemar W. Koczkodaj, S. J. Szarek
On distance-based inconsistency reduction algorithms for pairwise comparisons. Log. J. IGPL 18 (6) (2010)
Volodymyr Babiy, Ryszard Janicki, Tiffany Jingco, Tamar Kakiashvili, Waldemar W. Koczkodaj, Marc Woodbury-Smith
Benefits of Using Tabular Expressions in Planning Health Services. Software Engineering Research and Practice (2009)
Tamar Kakiashvili, Waldemar W. Koczkodaj, Phyllis Montgomery, Kalpdrum Passi, Ryszard Tadeusiewicz
Assessing the properties of the World Health Organization's Quality of Life Index. IMCSIT (2008)
Ratvinder Singh Grewal, Ryszard Janicki, Tamar Kakiashvili, K. Kielan, Waldemar W. Koczkodaj, Kalpdrum Passi, Ryszard Tadeusiewicz
Attacking the Web Cancer with the Automatic Understanding Approach. AWIC (2007)
Waldemar W. Koczkodaj, Michael W. Herman, Marian Orlowski
Managing Null Entries in Pairwise Comparisons. Knowl. Inf. Syst. 1 (1) (1999)
Ryszard Janicki, Waldemar W. Koczkodaj
A weak order solution to a group ranking and consistency-driven pairwise comparisons. Appl. Math. Comput. 94 (2-3) (1998)
Waldemar W. Koczkodaj, Marian Orlowski, V. Wiktor Marek
Myths about Rough Set Theory. Commun. ACM 41 (11) (1998)
Waldemar W. Koczkodaj, Michael W. Herman, Marian Orlowski
Using Consistency-driven Pairwise Comparisons in Knowledge-based Systems. CIKM (1997)
Wlodzimierz Holsztynski, Waldemar W. Koczkodaj
Convergence of Inconsistency Algorithms for the Pairwise Comparisons. Inf. Process. Lett. 59 (4) (1996)
Eugeniusz Eberbach, Waldemar W. Koczkodaj
A self-modifiable approach to scheduling and mapping algorithms in multiprocessor systems. Int. J. Comput. Math. 59 (3-4) (1996)
Michael W. Herman, Waldemar W. Koczkodaj
A Monte Carlo Study of Parwise Comparison. Inf. Process. Lett. 57 (1) (1996)
Zbigniew Duszak, Waldemar W. Koczkodaj
Generalization of a New Definition of Consistency for Pairwise Comparisons. Inf. Process. Lett. 52 (5) (1994)
Michael W. Herman, Waldemar W. Koczkodaj
APL2 implementation of a new definition of consistency of pairwise comparisons. ACM SIGAPL APL Quote Quad 24 (4) (1994)
Zbigniew Duszak, Waldemar W. Koczkodaj
Principal Components and the Accuracy of Machine Learning. DEXA (1992)
Waldemar W. Koczkodaj
Guest Editor's Introduction: Induction Algorithms. Int. J. Softw. Eng. Knowl. Eng. 1 (4) (1991)