foto

Peter Butka

English Slovak

2018

  • Fault detection and isolation of an aircraft turbojet engine using a multi-sensor network and multiple model approach / Ladislav Nyulászi, Rudolf Andoga, Peter Butka [et al.] - 2018. In: Acta Polytechnica Hungarica. Vol. 15, no. 2 (2018), p. 189-209. - ISSN 1785-8860
  • Nitric Oxide Production by Centimeter-Sized Meteoroids and the Role of Linear and Nonlinear Processes in the Shock Bound Flow Fields / Elizabeth Silber, Mihai Niculescu, Butka Peter, Reynold Silber - 2018. In: Atmosphere. - Basel (Švajčiarsko) : MDPI Roč. 9, č. 5 (2018), s. 1-21 [print]. - ISSN 2073-4433
  • Novel meteor simulation and observation techniques that emerged from BIG-SKY-EARTH COST action / Peter Butka [et al.] - 2018. In: Meteoritics & Planetary Science, Vol.53,Supl.1 (2018), p.6293-6293. - ISSN 1086-9379
  • Meteor activities within the BigSkyEarth COST Action: enabling new approaches in modeling and observations / Peter Butka [et al.] - 2018. In: EPSC Abstracts, European Planetary Science Congress 2018, Vol.12, paper no.EPSC2018-826.
  • Chytré zariadenia v priemysle (7) / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: ATP Journal. Roč. 25, č. 7 (2018), s. 44-45. - ISSN 1335-2237
  • Design of an application for an experimental identification of a system in MATLABSimulink environment / Ladislav Nyulászi, Peter Butka, Vladimír Gašpar - 2018. In: Acta Electrotechnica et Informatica. Roč. 18, č. 2 (2018), s. 55-60. - ISSN 1335-8243
  • Chytré zariadenia v priemysle (6) / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: ATP Journal. Roč. 25, č. 6 (2018), s. 46-47. - ISSN 1335-2237
  • Exploration of Web Search Results Based on the Formal Concept Analysis / Peter Butka, Thomas Low, Michael Kotzyba, Stefan Haun, Andreas Nurnberger - 2018. In: Semantic Keyword-Based Search on Structured Data Sources. - Cham : Springer, 2018 P. 123-135. - ISBN 978-3-319-74496-4 - ISSN 0302-9743
  • Chytré zariadenia v priemysle (5) / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: ATP Journal. Roč. 25, č. 5 (2018), s. 46-47. - ISSN 1335-2237
  • Analytické nástroje pre podporu rôznych typov procesov / Ján Paralič, Peter Butka [et al.] - 2018. In: Univerzitné vedecké parky a Výskumné centrá ako akcelerátory technologického transferu a výskumnej spolupráce s praxou v SR. - Košice : TU, 2018 S. 28-33. - ISBN 978-80-8086-268-8
  • Chytré zariadenia v priemysle (4) / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: ATP Journal. - 2018 Roč. 25, č. 4 (2018), s. 42-43. - ISSN 1335-2237
  • Using IoT devices for movement detection in medical environment - proof of concept / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: SAMI 2018. - Danvers : IEEE, 2018 S. 61-65. - ISBN 978-1-5386-4773-8
  • Chytré zariadenia v priemysle (3) / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: ATP Journal. Č. 3 (2018), s. 50-51. - ISSN 1335-2237
  • Comparison of different machine learning methods on wisconsin dataset / Juliana Ivančáková, František Babič, Peter Butka - 2018. In: SAMI 2018. - Danvers : IEEE, 2018 S. 173-177. - ISBN 978-1-5386-4772-1
  • Chytré zariadenia v priemysle (2) / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: ATP Journal. Č. 2 (2018), s. 54-55. - ISSN 1335-2237
  • Interactive visualization of query results set from information retrieval using concept lattices / Peter Butka, Miroslav Smatana, Veronika Novotná - 2018. In: Advances in Intelligent Systems and Computing volume 655, Springer, 2018 P. 128-137.
  • Chytré zariadenia v priemysle (1) / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2018. In: ATP Journal. Č. 1 (2018), s. 28-29. - ISSN 1335-2237

2017

  • Hierarchical topic modeling based on the combination of formal concept analysis and singular value decomposition / Miroslav Smatana, Peter Butka - 2017. In: Advances in Intelligent Systems and Computing : MISSI 2016. - Cham : Springer, 2017 Vol. 506 (2017), p. 357-368. - ISBN 978-3-319-43982-2 - ISSN 2194-5357
  • Two-step reduction of GOSCL based on subsets quality measure and stability index / Peter Butka, Jozef Pócs, Jana Pócsová - 2017. In: Advances in Intelligent Systems and Computing : MISSI 2016. - Cham : Springer, 2017 Vol. 506 (2017), p. 419-429. - ISBN 978-3-319-43982-2 - ISSN 2194-5357
  • Dynamic visualization of generalized one-sided concept lattices and their reductions / Miroslav Smatana, Peter Butka - 2017. In: Information Systems Architecture and Technology. - Cham : Springer, 2017 P. 55-66. - ISBN 978-3-319-46583-8 - ISSN 2194-5357
  • Tree based reduction of concept lattices based on conceptual indexes / Miroslav Smatana, Peter Butka, Lenka Cöveková - 2017. In: Information Systems Architecture and Technology. - Cham : Springer, 2017 P. 211-220. - ISBN 978-3-319-46583-8 - ISSN 2194-5357
  • Social-media data analysis using tessera framework in the hadoop cluster environment / Martin Sarnovsky, Peter Butka, Jakub Paulina - 2017. In: Advances in Intellingent Systems and Computing : ISAT 2016. - Cham : Springer, 2017 Vol. 522 (2017) p. 239-251. - ISBN 978-3-319-46586-9 - ISSN 2194-5357
  • Interaktívna vizualizácia výsledkov vyhľadávania informácií pomocou konceptových zväzov / Veronika Novotná, Peter Butka, Miroslav Smatana - 2017. In: Data a znalosti 2017. - Plzeň : Západočeská univerzita v Plzni, 2017 P. 15-19. - ISBN 978-80-261-0720-0
  • Interaktívna vizualizácia hierarchických štruktúr / Miroslav Smatana, Peter Butka - 2017. In: Data a znalosti 2017. - Plzeň : Západočeská univerzita v Plzni, 2017 P. 125-130. - ISBN 978-80-261-0720-0
  • Vyhľadávanie významných konceptov v rámci konceptuálnej analýzy dát / Miroslav Smatana, Peter Butka, Zuzana Čabalová - 2017. In: Data a znalosti 2017. - Plzeň : Západočeská univerzita v Plzni, 2017 P. 131-135. - ISBN 978-80-261-0720-0
  • Hierarchické prístupy k modelovaniu témy v dokumentoch / Miroslav Smatana, Peter Butka, Matúš Gore - 2017. In: Data a znalosti 2017. - Plzeň : Západočeská univerzita v Plzni, 2017 P. 136-140. - ISBN 978-80-261-0720-0
  • Retrieval of Important Concepts from Generalized One-Sided Concept Lattice / Miroslav Smatana, Peter Butka, Zuzana Čabalová - 2017. In: INES 2017. - Danvers : IEEE, 2017 P. 61-66. - ISBN 978-1-4799-7677-5
  • Twitter data analysis and visualizations using the R language on top of the Hadoop platform / Martin Sarnovsky, Peter Butka, Andrea Huzvarova - 2017. In: SAMI 2017. - Danvers : IEEE, 2017 S. 000327-000331. - ISBN 978-1-5090-5654-5
  • Podpora medicínskej diagnostiky pomocou dolovania v dátach / Juliana Ivančáková, František Babič, Peter Butka - 2017. In: WIKT 2017. - Košice : TU, 2017 S. 88-93. - ISBN 978-80-553-2876-8
  • Využitie smart a nositeľných zariadení pri sledovaní motorických symptómov Parkinsonovej choroby / Pavol Šatala, Vladimír Gašpar, Peter Butka - 2017. In: WIKT 2017. - Košice : TU, 2017 S. 100-103. - ISBN 978-80-553-2876-8
  • Creation and visualization of conceptual models based on FCA in R / Laura Rohaľová, Peter Butka - 2017. In: Electrical Engineering and Informatics 8 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : FEI TU, 2017 S. 392-397. - ISBN 978-80-553-3192-8
  • Interaktívna vizualizácia výsledkov vyhľadávania pomocou formálnej konceptovej analýzy / Veronika Novotná, Peter Butka - 2017. In: Electrical Engineering and Informatics 8 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : FEI TU, 2017 S. 398-403. - ISBN 978-80-553-3192-8
  • Návrh a implementácia balíka v R pre podporu riešenia vybraných úloh z oblasti rozvrhovania / Yuliia Myshun, Peter Butka - 2017. In: Electrical Engineering and Informatics 8 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : FEI TU, 2017 S. 404-409. - ISBN 978-80-553-3192-8
  • Návrh a implementácia balíka v R pre podporu riešenia vybraných úloh z oblasti logistiky / Natália Kuzmová, Peter Butka - 2017. In: Electrical Engineering and Informatics 8 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : TU, 2017 S. 410-415. - ISBN 978-80-553-3192-8
  • Web aplikácia pre podporu vizualizácie a objavovania znalostí vo vybranej množine dát z oblasti športu / Martin Gajdoščík, Peter Butka - 2017. In: Electrical Engineering and Informatics 8 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : TU, 2017 S. 416-421. - ISBN 978-80-553-3192-8
  • Aplikácia pre experimentálnu identifikáciu systému v prostredí MATLABSimulink / Ladislav Nyulászi, Peter Butka, Dominika Fedorová - 2017. In: Electrical Engineering and Informatics 8 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : TU, 2017 S. 468-473. - ISBN 978-80-553-3192-8

2016

  • Topic Modeling over text streams from social media / Miroslav Smatana, Ján Paralič, Peter Butka - 2016. In: Text, Speech and Dialogue. - Berlin : Springer, 2016 Vol. 9924 (2016), p. 163-172. - ISBN 978-3-319-45509-9 - ISSN 0302-9743
  • Comparison of Experimental Identification Methods Using Measured Data from a Turbojet Engine / Ladislav Nyulászi, Rudolf Andoga, Peter Butka, Vladimír Gašpar - 2016. In: SAMI 2016. - Danvers : IEEE, 2016 S. 23-27. - ISBN 978-1-4673-8739-2
  • Extraction of Keyphrases from Single Document Based on Hierarchical Concepts / Miroslav Smatana, Peter Butka - 2016. In: SAMI 2016. - Danvers : IEEE, 2016 P. 93-98. - ISBN 978-1-4673-8739-2
  • Hierarchické modelovanie témy nad prúdmi dát zo sociálnych sieti s využitím formálnej konceptovej analýzy / Miroslav Smatana, Peter Butka - 2016. In: WIKT and DaZ 2016. - Bratislava : STU, 2016 S. 321-324. - ISBN 978-80-227-4619-9
  • Využitie platformy ROS pre lokalizáciu a mapovanie neznámeho priestoru / Radovan Sivý, František Babič, Peter Butka, Peter Bednár - 2016. In: Electrical Engineering and Informatics 7 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : FEI TU, 2016 S. 831-834. - ISBN 978-80-553-2599-6
  • Nástroj pre podporu objavovania znalostí v doméne astronomických dát / Lukáš Pollák, Peter Butka - 2016. In: Electrical Engineering and Informatics 7 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : FEI TU, 2016 S. 377-382. - ISBN 978-80-553-2599-6
  • Webová aplikácia pre dolovanie znalostí z textových dokumentov v R / Juraj Kanderka, Peter Butka - 2016. In: Electrical Engineering and Informatics 7 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : FEI TU, 2016 S. 840-845. - ISBN 978-80-553-2599-6
  • Webová aplikácia pre spracovanie prúdu dát zo sociálnej siete Twitter v R / Michal Šimaľ, Peter Butka - 2016. In: Electrical Engineering and Informatics 7 : proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice. - Košice : FEI TU, 2016 S. 846-850. - ISBN 978-80-553-2599-6

2015

  • Butka, P., Pócs, J., Pócsová, J. (2015). Distributed computation of generalized one-sided concept lattices on sparse data tables. In: Computing and Informatics, vol. 34, no. 1 (2015), pp. 77-98, ISSN 1335-9150.
  • Butka, P., Pócs, J., Pócsová, J. (2015). Reduction of concepts from generalized one-sided concept lattice based on subsets quality measure. In: Advances in Intelligent Systems and Computing, vol. 314 (2015), pp. 101-111, ISSN 2194-5357.
  • Sarnovský, M., Butka, P., Bednár, P., Babič, F., Paralič, J. (2015). Analytical platform based on Jbowl library providing text-mining services in distributed environment. In: Lecture Notes in Computer Science : Information and Communication Technology, vol. 9357 (2015), pp. 310-319, ISSN 0302-9743.
  • Butka, P., Pócsová, J., Pócs, J. (2015). On intent stability index for One-Sided Concept Lattices. In: SACI 2015, 10th IEEE International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2015, pp. 79-84, ISBN 978-1-4799-9911-8.
  • Butka, P., Pócsová, J., Pócs, J. (2015). Experimental study on reduction of one-sided concept lattice based on subsets quality measure. In: SACI 2015, 10th IEEE International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2015, pp. 253-258, ISBN 978-1-4799-9911-8.
  • Butka, P., Pócsová, J., Pócs, J. (2015). Reduction ratio for GOSCL constrained by Moore co-families on object set. In: SAMI 2015, IEEE 12th International Symposium on Applied Machine Intelligence and Informatics, IEEE conference, Herľany, Slovakia, February 2015, pp. 239-244, ISBN 978-147998221-9.
  • Butka, P., Low, T., Kotzyba, M., Haun, S., Nurnberger, A. (2015). A Framework for FCA-based Exploratory Web Search. In: Proceedings of the 1st International Symposium on Companion-Technology (ISCT 2015), Ulm, Germany, pp. 131-136.
  • Smatana, M., Butka, P. (2015). Extrakcia kľúčových slov z jedného dokumentu založená na hierarchických konceptoch. In: Proceedings of WIKT 2015, Košice : TU, pp. 92-95, ISBN 978-80-553-2271-1.
  • Butka, P. (2015). Vizualizácia výsledkov vyhľadávania vo forme konceptového zväzu. In: Data a Znalosti 2015, Sborník konference, Praha, ČR, VŠB-TU Ostrava, pp. 97-100, ISBN 978-80-248-3824-3.
  • Paralic, J. et. al. (2015). IT services for analyses of various data samples. In: Proceedings of WIKT 2015, Košice : TU, pp. 82-86, ISBN 978-80-553-2271-1.
  • Paralic, J. et. al. (2015). IT tools and services for analyses of different types of processes. In: UVP Technikom. - Košice : Elfa, pp. 27-31, ISBN 978-80-8086-252-7.
  • Butka, P. (2015). Automatické generovanie testov pomocou metód spĺňania ohraničení. In: Electrical Engineering and Informatics 6, pp. 448-453, ISBN 978-80-553-2178-3.
  • Herditzká, S., Butka, P. (2015). Design and implementation of selected application for support of department administration processes. In: Electrical Engineering and Informatics 6, pp. 495-499, ISBN 978-80-553-2178-3.
  • Rohaľová, L., Butka, P. (2015). Implementácia vlastného balíka v R pre tvorbu jednostranných fuzzy konceptových zväzov. In: Electrical Engineering and Informatics 6, pp. 594-598, ISBN 978-80-553-2178-3.
  • Novacký, J., Butka, P. (2015). Návrh a implementácia vizualizácie algoritmu GHSOM v jazyku Processing. In: Electrical Engineering and Informatics 6, pp. 711-716, ISBN 978-80-553-2178-3.
  • Náhori, P., Butka, P. (2015). Systém pre podporu distribuovanej realizácie úloh dolovania v textoch v rámci BOINC infraštruktúry. In: Electrical Engineering and Informatics 6, pp. 834-839, ISBN 978-80-553-2178-3.
  • Kyšeľová, J., Butka, P. (2015). Využitie štruktúry a obsahu konceptového zväzu pre analýzu siete. In: Electrical Engineering and Informatics 6, pp. 891-896, ISBN 978-80-553-2178-3.
  • Sarnovský, M., Butka, P., Hoffman, P. (2015). Návrh a implementácia multiagentového prostredia pre interaktívny športový simulátor. In: Electrical Engineering and Informatics 6, pp. 707-710, ISBN 978-80-553-2178-3.

2014

  • Butka, P., Pócs, J., Pócsová, J. (2014). On equivalence of conceptual scaling and generalized one-sided concept lattices. In: Information Sciences, vol. 259 (2014), pp. 57-70, ISSN 0020-0255.
  • Butka, P., Pócs, J., Pócsová, J. (2014). Distributed version of algorithm for generalized one-sided concept lattices. In: Studies in Computational Intelligence, vol. 511 (2014), pp. 119-129, ISSN 1860-949X.
  • Butka, P., Pócs, J., Pócsová, J. (2014). Basic theorem for generalized one-sided concept lattices. In: Applied Mathematical Sciences, vol. 8, no. 10 (2014), pp. 463-468, ISSN 1312-885X.
  • Butka, P., Pócsová, J., Pócs, J. (2014). Some results and algorithm for one-sided concept lattices with separable modifiers. In: SACI 2014, 9th IEEE International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2014, pp. 201-205, ISBN 978-147994694-5.
  • Butka, P., Pócsová, J., Pócs, J. (2014). GOSCL as Facet-like Structures. In: SAMI 2014, IEEE 12th International Symposium on Applied Machine Intelligence and Informatics, IEEE conference, Herľany, Slovakia, January 2014, pp. 321-326, ISBN 978-1-4799-3441-6.
  • Butka, P., Pócsová, J., Pócs, J. (2014). Bisection-based Merging Algorithm for Creation of One-Sided Concept Lattices. In: SAMI 2014, IEEE 12th International Symposium on Applied Machine Intelligence and Informatics, IEEE conference, Herľany, Slovakia, January 2014, pp. 103-108, ISBN 978-1-4799-3441-6.
  • Butka, P. (2014). Some Results Related to Theory and Practice of Fuzzy Concept Lattices. In: Cognitive Traveling in Digital Space of the Web and Digital Libraries : Studies in Informatics and Information Technologies, Bratislava : STU, pp. 148-151, ISBN 978-80-227-4254-2.
  • Náhori, P., Butka, P. (2014). Využitie softvéru BOINC pre podporu realizácie výskumných a projektových úloh dolovania v textoch. In: Proceedings of WIKT 2014, pp. 22-26, ISBN 978-80-227-4267-2.

2013

  • Butka, P., Pócs, J., Pócsová, J. (2013). Representation of fuzzy concept lattices in the framework of classical FCA. In: Journal of Applied Mathematics, art.no. 236725 (2013), pp. 1-7, ISSN 1110-757X.
  • Butka, P., Pócs, J. (2013). Generalization of one-sided concept lattices. In: Computing and Informatics, vol. 32, no. 2 (2013), pp. 355-370, ISSN 1335-9150.
  • Bednár, P., Butka, P., Mach, M., Furdík, K., Sabol, T., Smatana, P. (2013). Integrated Platform for Processing and Traceability of Information within Collaborative Policy Modelling Process in OCOPOMO. In: International Journal of Digital Content Technology and its Applications, vol. 7, no. 8 (2013), pp. 865-873, ISSN 2233-9310.
  • Butka, P., Bednár, P., Mach, M., Furdík, K., Smatana, P. (2013). Integrované softvérové prostredie pre kolaboratívne modelovanie politík. In: Transfer inovácií, č.26 (2013), pp. 176-181, ISSN 1337-7094.
  • Butka, P., Pócs, J., Pócsová, J., Sarnovský, M. (2013). Multiple Data Tables Processing via One-Sided Concept Lattices. In: Advances in Intelligent Systems and Computing, vol. 183 (2013), Springer-Verlag, pp. 89-98, ISSN 2194-5357.
  • Butka, P., Pócs, J., Pócsová, J. (2013). Interpretation of fuzzy attribute subsets in generalized one-sided concept lattices. In: Journal of Information and Organizational Sciences, vol. 37, no. 2 (2013), pp. 89-101, ISSN 1846-3312.
  • Sarnovský, M., Čonka, M., Butka, P. (2013). Webová aplikácia pre dolovanie v dátach použitím FCA. In: Electrical Engineering and Informatics 4, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2013, pp. 120-125, ISBN 978-80-553-1440-2.
  • Butka, P., Náhori, P. (2013). Využitie BOINC softvéru ako distribuovaného výpočtového prostredia na zvolenej infraštruktúre. In: Electrical Engineering and Informatics 4, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2013, pp. 203-208, ISBN 978-80-553-1440-2.
  • Bujňák, J., Butka, P. (2013). Návrh a implementácia nástroja pre výučbu metód riešenia dopravného problému v jazyku Processing. In: Electrical Engineering and Informatics 4, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2013, pp. 498-503, ISBN 978-80-553-1440-2.
  • Butka, P. (2013). On different aspects of usage of one-sided concept lattices in data analysis. In: Cognitive Traveling in Digital Space of the Web and Digital Libraries : Studies in Informatics and Information Technologies, STU Bratislava, 2013, pp. 74-77, ISBN 978-80-227-4089-0.
  • Butka, P., Pócsová, J., Pócs, J. (2013). Use of generalized one-sided FCA approach for joining of simple object-attribute models. In: SACI 2013, IEEE 8th International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2013, pp. 331-336, ISBN 978-1-4673-6400-3.
  • Butka, P., Pócsová, J. (2013). Hybrid approach for visualization of documents clusters using GHSOM and Sammon projection. In: SACI 2013, IEEE 8th International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2013, pp. 337-342, ISBN 978-1-4673-6400-3.
  • Paralič, J., Furdík, K., Paralič, M., Bednár, P., Butka, P., Wagner, J. (2013). The design of ontologies and processes supporting selected educational IT services. In: SAMI 2013, IEEE 11th International Symposium on Applied Machine Intelligence and Informatics, IEEE conference, Herľany, Slovakia, January 2013, pp. 175-180, ISBN 978-1-4673-5926-9.

2012

  • Butka, P., Pócs, J., Pócsová, J. (2012). Use of Concept Lattices for Data Tables with Different Types of Attributes. In: Journal of Information and Organizational Sciences, vol. 36, no. 1 (2012), pp. 1-12, ISSN 1846-3312.
  • Paralič, J., Furdík, K., Paralič, M., Bednár, P., Butka, P., Wagner, J. (2012). Semantic support for educational IT services. In: Acta Electrotechnica et Informatica, vol. 12, no. 4 (2012), pp. 39-46, ISSN 1335-8243.
  • Bednár, P., Butka, P., Mach, M., Furdík, K., Smatana, P. (2012). Integrated Platform of Different ICT Tools for Support of Collaborative Policy Modeling Approach in OCOPOMO. In: Scientific Bulletin of The Politechnica University of Timişoara, Romania: Transactions on Automation Control and Computer Science, vol. 57 (71), no. 3 (2012), pp. 189-198, ISSN 1224-600X.
  • Butka, P., Pócsová, J., Pócs, J. (2012). Comparison of Standard and Sparse-based Implementation of GOSCL Algorithm. In: CINTI 2012, 13th IEEE International Symposium on Computational Intelligence and Informatics, Budapest, Hungary, November 2012, pp. 67-71, ISBN 978-1-4673-5206-2.
  • Butka, P. (2012). Reduction of computation times of GOSCL algorithm using sparse-based implementation. In: WIKT 2012, 7th Workshop on Intelligent and Knowledge Oriented Technologies, November 2012, Smolenice, Slovakia, pp. 97-100, ISBN 978-80-227-3812-5.
  • Bednár, P., Butka, P., Furdík, K., Mach, M., Smatana, P. (2012). Integrované prostredie pre podporu kolaboratívneho procesu modelovania politík. In: WIKT 2012, 7th Workshop on Intelligent and Knowledge Oriented Technologies, November 2012, Smolenice, Slovakia, pp. 133-136, ISBN 978-80-227-3812-5.
  • Sarnovský, M., Butka, P. (2012). Cloud computing as a platform for distributed data analysis. In: WIKT 2012, 7th Workshop on Intelligent and Knowledge Oriented Technologies, November 2012, Smolenice, Slovakia, pp. 177-180, ISBN 978-80-227-3812-5.
  • Bednár, P., Butka, P., Furdík, K., Mach, M., Smatana, P. (2012). Návrh a integrácia nástrojov IKT pre podporu kolaboratívneho procesu modelovania politík. In: Znalosti 2012 : 11th annual conference, Mikulov, Czech republic, October 2012, pp. 95-104, ISBN 978-80-7378-220-7.
  • Butka, P., Pócsová, J., Pócs, J. (2012). On generation of one-sided concept lattices from restricted context. In: SISY 2012, IEEE 10th Jubilee International Symposium on Intelligent Systems and Informatics, IEEE conference, Subotica, Serbia, September 2012, pp. 111-115, ISBN 978-1-4673-4750-1.
  • Smatana, P., Butka, P. (2012). Achieving traceability of information in collaborative policy modelling processes. In: SISY 2012, IEEE 10th Jubilee International Symposium on Intelligent Systems and Informatics, IEEE conference, Subotica, Serbia, September 2012, pp. 49-54, ISBN 978-1-4673-4750-1.
  • Butka, P. (2012). Návrh využitia metodológie METHONTOLOGY pre aplikáciu vybraného konceptuálneho modelu. In: Electrical Engineering and Informatics 3, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2012, pp. 34-39, ISBN 978-80-553-0890-6.
  • Butka, P. (2012). Porovnanie metodológií pre budovanie ontologických modelov. In: Electrical Engineering and Informatics 3, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2012, pp. 40-45, ISBN 978-80-553-0890-6.
  • Sarnovský, M., Balucha, M., Butka, P. (2012). Vyhľadávanie dokumentov s použitím formálnej konceptuálnej analýzy. In: Electrical Engineering and Informatics 3, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2012, pp. 202-207, ISBN 978-80-553-0890-6.
  • Sarnovský, M., Marcinov, M., Butka, P. (2012). Vyhľadávanie webových stránok pomocou ekvivalencie tried v oblasti rough sets. In: Electrical Engineering and Informatics 3, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2012, pp. 208-213, ISBN 978-80-553-0890-6.
  • Sarnovský, M., Vincej, P., Butka, P. (2012). Jednoduchý príklad modelovania autonómneho agenta v simulačnom prostredí Netlogo. In: Electrical Engineering and Informatics 3, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2012, pp. 214-219, ISBN 978-80-553-0890-6.
  • Sarnovský, M., Butka, P., Pócsová, J. (2012). Cloud computing as a platform for distributed fuzzy FCA approach in data analysis. In: INES 2012, IEEE 16th International Conference on Intelligent Engineering Systems, IEEE conference, Lisbon, Portugal, June 2012, pp. 291-296, ISBN 978-1-4673-2695-7.
  • Butka, P., Pócsová, J., Pócs, J. (2012). Experimental study on time complexity of GOSCL algorithm for sparse data tables. In: SACI 2012, 7th IEEE International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2012, pp. 101-106, ISBN 978-1-4673-1014-7.
  • Bednár, P., Butka, P., Furdík, K., Mach, M., Smatana, P. (2012). Design and integration of ICT tools for OCOPOMO policy modelling approach. In: SACI 2012, 7th IEEE International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2012, pp. 53-58, ISBN 978-1-4673-1014-7.
  • Wimmer, M.A., Furdík, K., Bicking, M., Mach, M., Sabol, T., Butka, P. (2012). Open Collaboration in Policy Development: Concept and Architecture to Integrate Scenario Development and Formal Policy Modelling. Book Chapter In: Empowering Open and Collaborative Governance : Technologies and Methods for Online Citizen Engagement in Public Policy Making, Springer-Verlag, Berlin Heidelberg, 2012, pp. 199-219, ISBN 978-3-642-27218-9.
  • Butka, P., Pócsová, J., Pócs, J. (2012). A Proposal of the Information Retrieval System Based on the Generalized One-Sided Concept Lattices. Book Chapter In: Topics in Intelligent Engineering and Informatics (Vol.1), Applied Computational Intelligence in Engineering and Information Technology, Springer-Verlag, Berlin Heidelberg, 2012, pp. 59-70, ISBN 978-3-642-28304-8, ISSN 2193-9411.
  • Butka, P., Pócsová, J., Pócs, J. (2012). On some complexity aspects of generalized one-sided concept lattices algorithm. In: SAMI 2012, 10th IEEE Jubilee International Symposium on Applied Machine Intelligence and Informatics, IEEE conference, Herlany, Slovakia, January 2012, pp. 231-236, ISBN 978-1-4577-0195-5.

2011

  • Butka, P., Pócsová, J., Pócs, J. (2011). Design and implementation of incremental algorithm for creation of generalized one-sided concept lattices. In: CINTI 2011, 12th IEEE International Symposium on Computational Intelligence and Informatics, IEEE conference, Budapest, Hungary, November 2011, pp. 373-378, ISBN 978-1-4577-0043-9.
  • Furdík, K., Butka, P., Mach, M. (2011). Architecture design of a system for collaborative policy modelling. In: MeTTeG11, Proceedings of the 5th International Conference on Methodologies, Technologies and Tools Enabling e-Government, Camerino, Italy, July 2011, pp. 147-163, ISBN 978-88-7589-425-2.
  • Sarnovský, M., Butka, P., Bednár, P. (2011). Analýza množín textových dokumentov v distribuovaných prostrediach. In: Electrical Engineering and Informatics 2 : proceeding of the Faculty of Electrical Engineering and Informatics of the Technical University of Košice, 2011, pp. 392-396, ISBN 978-80-553-0611-7.
  • Butka, P., Sarnovský, M. (2011). Využitie agentových simulácií v socioekonomickej analýze a ich možné rozšírenia. In: Electrical Engineering and Informatics 2, Proceedings of the Faculty of Electrical Engineering and Informatics of the Technical University of Kosice, 2011, pp. 386-391, ISBN 978-80-553-0611-7.
  • Butka, P., Pócsová, J. (2011). Hierarchical FCA-based conceptual model of text documents used in information retrieval system. In: SACI 2011, 6th IEEE International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2011, pp. 199-204, ISBN 978-1-4244-9107-0.
  • Butka, P., Mach, M., Furdík, K., Genči, J. (2011). Design of a system architecture for support of collaborative policy modelling processes. In: SACI 2011, 6th IEEE International Symposium on Applied Computational Intelligence and Informatics, IEEE conference, Timisoara, Romania, May 2011, pp. 193-198, ISBN 978-1-4244-9107-0.
  • Butka, P., Furdík, K., Mach, M., Sabol, T. (2011). The OCOPOMO project: a toolkit supporting the open collaboration for policy modelling. In: Znalosti 2011 : 10th annual conference, Stará Lesná, Slovakia, January 2011, pp. 309-312, ISBN 978-80-248-2369-0.

2010

  • Butka, P., Mach, M., Sabol, T., Furdík, K. (2010). ICT-based Toolbox in OCOPOMO Project and Potential Methods for Integration. In: WIKT 2010 Proceedings, 5th Workshop on Intelligent and Knowledge Oriented Technologies, Bratislava, Slovakia, November 2010, pp. 121-124, ISBN 978-80-970145-2-0.
  • Butka, P., Dulinová, V., Furdík, K., Gazda, V., Hiľovská, K., Mach, M., Sabol, T. (2010). O riešení energetickej politiky na úrovni samosprávneho kraja s využitím IKT. In: National and Regional Economics VIII, Conference proceedings, Herlany, October 2010, ISBN 978-80-553-0517-2.
  • Butka, P., Sabol, T., Furdík, K., Mach, M. (2010). ICT-based support for policy modelling in OCOPOMO project. Book chapter In: Wilimovska, Z., Borzemski, L., Grzech, A., Swiatek, J. (Eds.): Information Systems Architecture and Technology : IT Models in Management Process, Library of Informatics of University Level Schools, Wroclaw University of Technology, Wroclaw, Poland, 2010, pp. 191-203, ISBN 978-83-7493-544-9.
  • Butka, P., Furdík, K., Sabol, T., Mach, M. (2010). Use of e-Participation Tools for Support of Policy Modelling at Regional Level. In: Proceedings of MCIS 2010 - 5th Mediterranean Conference on Information Systems, Tel Aviv Yaffo, Israel, September 12-14, 2010. Paper 17.
  • Paralič, J., Furdík, K., Tutoky, G., Bednár, P., Sarnovský, M., Butka, P., Babič, F. (2010). Dolovanie znalostí z textov. Equilibria, s.r.o., Košice, 2010, 183 p., ISBN 978-80-89284-62-7.
  • Butka, P. (2010). Metódy tvorby ontológií pre sémantický web. Dizertačná práca. Košice: technická univerzita v Košiciach, Fakulta elektrotechniky a informatiky, 2010, 180p.
  • Furdík, K., Paralič, J., Babič, F., Butka, P., Bednár, P. (2010). Design and Evaluation of a Web System Supporting Various Text Mining Tasks for the Purposes of Education and Research. In: Acta Electrotechnica et Informatica, vol. 10, no. 1 (2010), pp. 51-58, ISSN 1335-8243.

2009

  • Sarnovský, M., Butka, P., Paralič, J. (2009) Grid-based Support for Different Text Mining Tasks. In: Acta Polytechnica Hungarica, vol. 6, no. 4 (2009), pp. 5-27, ISSN 1785-8860.
  • Butka, P., Lukáč, G., Mach, M., Sabol, T. (2009). Semantic-based Groupware System for Collaborative Support in Public Administration Processes. In: Acta Electrotechnica et Informatica, vol. 9, no. 4 (2009), pp. 9-16, ISSN 1335-8243.
  • Butka, P., Křemen, P., Kouba, Z., Matoušek, K. (2009). OWL Version - Development of the Ontology Versioning System. In: WIKT 2009 Proceedings, 4th Workshop on Intelligent and Knowledge Oriented Technologies, Herľany, Slovakia, November 2009, pp. 102-105, ISBN 978-80-89284-42-9.
  • Butka, P. (2009). Metamodel-based Ontology of Software Development Methodologies Used for V-Modell XT. In: WIKT 2009 Proceedings, 4th Workshop on Intelligent and Knowledge Oriented Technologies, Herľany, Slovakia, November 2009, pp. 6-10, ISBN 978-80-89284-42-9.
  • Butka, P. (2009). Simple solution for ontology-based mapping between V-Modell XT and selected software development methodologies. In: Proceedings of the 12th Multiconference Information Society – IS 2009, Volume A, published in series: Informacijska družba, Ljubljana, Slovenia, 2009, pp. 249-252, ISSN 1581-9973.
  • Butka, P. (2009). Different knowledge representations of software development methodologies used for V-Modell XT. Book chapter In: Borzemski, L., Grzech, A., Swiatek, J., Wilimovska, Z. (Eds.): Information Systems Architecture and Technology: Advances in Web-Age Information Systems, Library of Informatics of University Level Schools, Wroclaw University of Technology, Wroclaw, Poland, 2009, pp. 149–159, ISBN 978-83-7493-479-4.
  • Butka, P. (2009). Knowledge-based Representation of Software Development Processes – Existing Approaches and Applicability for V-Modell XT. Research Report GL 200/09. CTU, Faculty of Electrical Engineering, Gerstner Laboratory, Prague, 2009, 82p. ISSN 1213-3000.
  • Butka, P., Matoušek, K. (2009). Methodology Guidelines for Tailoring of the V-Modell XT in Czech Practice. Research Report GL 201/09. CTU, Faculty of Electrical Engineering, Gerstner Laboratory, Prague, 2009. 31p. ISSN 1213-3000.
  • Butka, P., Bednár, P., Babič, F. (2009). Use of task-based text-mining execution engine in support of knowledge creation processes. In:Znalosti 2009 : 8. ročník konferencie : Brno, 4. - 6. február 2009, pp. 289-292, ISBN 978-80-227-3015-0.
  • Butka, P., Bednár, P., Babič, F., Furdík, K., Paralič. J. (2009). Distributed task-based execution engine for support of text-mining processes. In: SAMI 2009, 7th International Symposium on Applied Machine Intelligence and Informatics, IEEE conference, Herľany, Slovakia, 2009, pp.29-34, ISBN 978-1-4244-3802-0.
  • Butka, P., Lukáč, G. (2009). SAKE project - second prototype of groupware system. In: WIKT 2008, 3rd Workshop on Intelligent and Knowledge Oriented Technologies, Smolenice, Slovakia, 2008, publikované v 2009, pp. 85-88, ISBN 978-80-227-3027-3.
  • Bednár, P., Butka, P. (2009). Task-based execution engine for JBOWL. In: Proceedings of the 3rd Workshop on Intelligent and Knowledge Oriented Technologies, WIKT 2008, Smolenice, Slovakia, 2008, publikované v 2009, pp.65-68, ISBN 978-80-227-3027-3.

2008

  • Lukáč, G., Butka, P., Sabol, T., Mach, M. (2008). Projekt SAKE - holistický rámec pre agilnú verejnú správu. In: Národná a regionálna ekonomika 7 : Zborník príspevkov z konferencie, Herľany, 2008, Slovakia, pp. 572-576, ISBN 978-80-553-0084-9.
  • Butka, P., Bednár, P. (2008). Design and implementation of task-based middleware execution engine for JBOWL text-mining library. In: Proceedings of the 8th International Student Workshop WDA 2008, Dedinky, Slovakia, 2008, pp. 63-70, ISBN 978-80-89284-21-4.
  • Butka, P., Lukáč, G. (2008). Semantic-based groupware system in SAKE for support of knowledge and expert intensive public administration processes. In: CECIIS 2008 : Proceedings of the 19th Central European Conference on Information and Intelligent Systems : September 2008, Varaždin, Croatia, pp. 307-314, ISBN 978-953-6071-04-3.
  • Butka, P., Lukáč, G. (2008). Architecture and Integration of Prototype in SAKE. In: Znalosti 2008, Bratislava, Slovakia, pp.327-330, ISBN 978-80-227-2827-0.
  • Sarnovský, M., Kostelník, P., Butka, P., Hreno, J., Lackova, D. (2008). First Demonstrator of HYDRA MIddleware Architecture for Building Automation. In: Znalosti 2008, Bratislava, Slovakia, pp.204-214, ISBN 978-80-227-2827-0.
  • Sarnovský, M., Butka, P., Safko, V. (2008). Distribuované zhlukovanie textových dokumentov v prostredí Gridu. In: Znalosti 2008, Bratislava, Slovakia, pp.192-203, ISBN 978-80-227-2827-0.
  • Butka, P., Sarnovský, M., Bednár, P. (2008). One Approach to Combination of FCA-based Local Conceptual Models for Text Analysis - Grid-based Approach. In Proceedings of the 6th International Symposium on Applied Machine Intelligence 2008, SAMI 2008, Herľany, Slovakia, pp.131-135, ISBN 978-1-4244-2106-0.
  • Lukáč, G., Butka, P., Mach, M. (2008). Semantically-Enhanced Extension of the Discussion Analysis Algorithm in SAKE. In Proceedings of the 6th International Symposium on Applied Machine Intelligence 2008, SAMI 2008, Herľany, Slovakia, pp.241-246, ISBN 978-1-4244-2106-0.
  • Sarnovský, M., Kostelník, P., Hreňo, J., Butka, P. (2008). Device Description in HYDRA Middleware. In Proceedings of the 2nd Workshop on Intelligent and Knowledge oriented Technologies 2007, WIKT 2007, Košice, Slovakia, November 2007 (published 2008), pp.71-74, ISBN 978-80-89284-10-8.
  • Butka, P., Hreňo, J., Lukáč, G. (2008). SAKE Project - Architecture and First Prototype. In Proceedings of the 2nd Workshop on Intelligent and Knowledge oriented Technologies 2007, WIKT 2007, Košice, Slovakia, November 2007 (published 2008), pp.96-100, ISBN 978-80-89284-10-8.
  • Lukáč, G., Mach, M., Butka, P. (2008). Návrh metódy pre získavanie informácií o prispievateľoch do diskusných skupín. In Proceedings of the 2nd Workshop on Intelligent and Knowledge oriented Technologies 2007, WIKT 2007, Košice, Slovakia, November 2007 (published 2008), pp.50-53, ISBN 978-80-89284-10-8.

2007

  • Sarnovský, M., Butka, P., Tkáč, E. (2007). Distribuovaná tvorba hierarchie konceptov z textových dokumentov v gridovom prostredí. In: ITAT2007 - Information Technologies - Applications and Theory: Conference on Theory and Practice of Information Technologies - Proceedings, Poľana, Slovakia, September 2007, pp.97-102, ISBN 978-80-969184-7-8.
  • Butka, P., Hreňo, J., Mach, M. (2007). Semantic-based analysis of discussions in SAKE. In: ITAT 2007 - Informačné Technológie - Aplikácie a Teória: Zborník príspevkov prezentovaných na pracovnom seminári ITAT, Poľana, Slovakia, September 2007, pp.59-62, ISBN 978-80-969184-6-1.
  • Butka, P., Hreňo, J. (2007). Architecture of Groupware System in SAKE. In: Electronic Government - 6th International EGOV Conference: Proceedings of ongoing research, project contributions and workshops, DEXA conferences 2007, Regensburg, Germany, September 2007, pp.301-308, ISBN 978-3-85499-255-4.
  • Mach, M., Butka, P. (2007). Systém pre znalostnú podporu štátnej správy a samosprávy. In: Znalostný manažment 2007 : Zborník príspevkov, Bratislava, Slovakia, June 2007, 16p., ISBN 978-80-89306-02-2.
  • Želinský, T., Sabol, T., Butka, P. (2007). Aj informácie treba starostlivo vážiť : Množstvo poznatkov a ich využitie vo verejnej správe musíme zracionalizovať. In: Verejná správa, roč.62, č.12 (2007), pp.19-21, ISSN 1335-7883.
  • Sarnovský, M., Butka, P., Kostelník, P. (2007). HYDRA - Network Embedded System Middleware for Ambient Intelligent Devices. In: ICCC 2007: Proceedings of 8th International Carpathian Control Conference, Štrbské Pleso, Slovakia, May 2007, pp.611-614, ISBN 978-80-8073-805-1.
  • Butka, P. (2007). Jednoduchá metóda kombinácie lokálnych modelov pri budovaní hierarchie konceptov z textových dokumentov. In: Znalosti 2007: Proceedings of the 6th annual conference, VŠB-TU Ostrava, Czech Republic, February 2007, pp.167-178, ISBN 978-80-248-1279-3.
  • Butka, P., Sarnovský, M. (2007). Distributed clustering of textual documents based on the GHSOM algorithm. In: Znalosti 2007: Proceedings of the 6th annual conference, VŠB-TU Ostrava, Czech Republic, February 2007, pp.296-299, ISBN 978-80-248-1279-3.
  • Butka, P. (2007). Visualization of textual documents using combination of GHSOM algorithm and Sammon's mapping. In: Znalosti 2007: Proceedings of the 6th annual conference, VŠB-TU Ostrava, Czech Republic, February 2007, pp.292-295, ISBN 978-80-248-1279-3.
  • Butka, P., Hreňo, J. (2007). Semantic-based Groupware System for SAKE. In Proceedings of the 1st Workshop on Intelligent and Knowledge oriented Technologies, WIKT 2006, Bratislava, Slovakia, December 2006 (published 2007), pp.71-73, ISBN 978-80-969202-5-9.
  • Sarnovský, M., Butka, P. (2007). Grid-enabled Support for Classification and Clustering of Textual Documents. In Proceedings of the 5th Slovakian-Hungarian Joint Symposium on Applied Machine Intelligence and Informatics, SAMI 2007, Poprad - Aquacity, Slovakia, January 2007, pp.265-275, ISBN 978-963-7154-56-0.

2006

  • Želinský, T., Sabol, T., Hreňo, J., Butka, P. (2006). SAKE Project: Agile Change Management in Knoweldge-based eGovernment Back-office. In: National and Regional Economics VI, Herľany, Slovakia, 11-13 October 2006, pp.471-475, ISBN 80-8073-721-5.
  • Butka, P., Števkov, M. (2006). Kombinácia algoritmu GHSOM a Sammonovho mapovania pre vizualizáciu množiny textových dokumentov. In Proceedings of the ITAT 2006, Information Technologies - Applications and Theory, Workshop on Theory and Practice of Information Technologies, Slovakia, September 2006, pp.17-22, ISBN 80-969184-4-3.
  • Butka, P., Paralič, J., Rauber, A. (2006). WDA 2006 - Workshop on Data Analysis, (eds.). Proc. of the 7th International Student Workshop, Kosice, Slovakia, July 2006, ISBN 80-969224-8-3, 114 p.
  • Butka, P., Zeher, M. (2006). Simple approach to combination of FCA-based local conceptual models for text analysis. In Proceedings of the 7th International Student Workshop on Data Analysis, WDA 2006, Košice, Slovakia, July 2006, pp.1-10, ISBN 80-969224-8-3.
  • Butka, P. (2006). Application of Formal Concept Analysis in texts. In Proceedings of 6th PhD Student Conference and Scientific and Technical Competition of Students of Faculty of Electrical Engineering and Informatics Technical University of Košice: Proceeding from conference and competition, Košice, Slovakia, May 2006, pp.27-28, ISBN 80-8086-035-1.
  • Butka, P. (2006). Kombinácia redukcie problému a fuzzy FCA prístupu pri tvorbe konceptuálnych modelov z textových dokumentov. In: Znalosti 2006: 5. ročník konference, VŠB-TU Ostrava, Február 2006, pp.71-82, ISBN 80-248-1001-8.
  • Butka, P. (2006). Use of FCA in the Ontology Extraction Step for the Improvement of the Semantic Information Retrieval. In Proceedings of SOFSEM 2006: Theory and Practice of Computer Science, Proceedings Volume II, Měřín, Czech Republic, January 2006, pp.74-82, ISBN 80-903298-4-5.

2005

  • Sabol, T., Hošková, A., Hreňo, J., Bednár, P., Butka, P., Šoltés, M. (2005). Foreign Direct Investments in Central East Europe and Their Impact on Productivity Gap. Analysis Using Statistical and Data Mining Approach. Some results of the ProductivityGap Project. Vienala, Košice, October 2005, 168p., ISBN 80-89232-05-1.
  • Butka, P. (2005). Aplikácia zhlukovania fuzzy konceptov v doméne textových dokumentov. In Proceedings of the ITAT 2005, Information Technologies - Applications and Theory, Workshop on Theory and Practice of Information Technologies, Račkova Dolina, Slovakia, September 2005, pp.31-40, ISBN 80-7097-609-8.
  • Butka, P. (2005). Use of ontologies for information retrieval in the semantic web environment. In Proceedings of the 6th Slovak-Austrian Student Workshop on Data Analysis, WDA 2005, Abaújszántó, Hungary, June 2005, pp. 10-15, ISBN 80-8086-015-7.
  • Bednár, P., Butka, P., Paralič, J. (2005). Java library for support of text mining and retrieval. In: Znalosti 2005 : Sborník příspěvků 4. ročníku konference, Február 2005, pp.162-169, ISBN 80-248-0755-6.
  • Sabol, T., Hreňo, J., Bednár, P., Butka, P. (2005). Use of knowledge discovery techniques in evalution of foreign direct investment survey. In: Znalosti 2005 : Sborník příspěvků 4. ročníku konference, Február 2005, pp.290-297, ISBN 80-248-0755-6.
  • Butka, P. (2005). Use of JBOWL for support of clustering and preprocessing of textual documents. In: Znalosti 2005 : Sborník posterů, pp.21-24.
  • Butka, P. (2005). Metódy tvorby ontológií pre sémantický web. Písomná práca k dizertačnej skúške, KKUI FEI TU Košice.
  • Bednár, P., Butka, P. (2005). JBOWL - Java Bag-Of-Words Library. In: 5th PhD student conference and scientific and technical competition of students of FEI TU Košice, Proceeding from conference and competition, Košice, Slovakia, May 2005, pp.19-20, ISBN 80-969224-4-0.

2004 a staršie

  • Bednár, P., Butka, P. (2004). Zhlukovanie textových dokumentov modifikovaným algoritmom GHSOM. In Proceedings of ITAT 2003, Information technologies - applications and theory, Sliezsky dom, Slovakia, September 2003 (published 2004), pp.1-10, ISBN 80-7097-564-4.
  • Bednár, P., Butka, P. (2004). Feature space and instance reduction methods for text categorization. In: 4. Doktorandská konferencia a Študentská vedecká odborná súťaž TU v Košiciach Fakulty elektrotechniky a informatiky, Zborník z konferencie a súťaže, Košice, Slovensko, May 2004, pp.15-16, ISBN 80-968395-9-4.
  • Butka, P. (2003). Clustering of textual documents: modifications of GHSOM algorithm. In Proceedings of the 4th Slovak-Austrian Student Workshop on Data Analysis, WDA 2003, Malinô Brdo, Slovakia, June 2003, pp.53-65, ISBN 80-7097-523-7.
  • Butka, P. (2003). Knowledge discovery in textual documents collection. V Zborníku 3. Doktorandskej konferencie a Študentskej vedeckej odbornej súťaže FEI TU v Košiciach, Košice, Slovensko, May 2003, pp.101-102, ISBN 80-968666-3-X.
  • Butka, P. (2003). Zhlukovanie textových dokumentov. Diplomová práca, KKUI FEI TU Košice.
  • Blicha, M., Butka, P., Futej, T. (2002). Evaluation in document clustering and categorization. In Proceedings of the 3rd Slovak-Austrian Student Workshop on Data Analysis, WDA 2002, Košice, Slovakia, June 2002, pp.18-26.
  • Butka, P. (2001). Weka – machine learning algorithms and text mining process. In Proceedings of the 2nd Slovak-Austrian Student Workshop on Data Analysis, WDA 2001, Budapest, Hungary, June 2001, pp.35-45.