Publications

Tomas Skopal
homepage

General

Teaching (in czech)

List of Publications

Paper citations:

In-paper citations
Bibliography servers: DBLP record, CSB record, Google Scholar

Journal indexed by WoS or Scopus BP = (among) best paper(s) Springer/LNCS/LNAI ACM procs. IEEE procs.

Under review/in press

84.

M.L. Hetland, T. Skopal. J. Lokoč, Ch. Beecks
Ptolemaic Access Methods: Challenging the Reign of the Metric Space Model, submitted

83.

wos

M. Kruliš, T. Skopal. J. Lokoč, Ch. Beecks
Combining CPU and GPU Architectures for Fast Similarity Search, to appear in Distributed and Parallel Databases, Springer
[SpringerLink] [full paper (preprint) © Springer]

2012

82.	J. Lokoč, T. Grošup, T. Skopal Image Exploration using Online Feature Extraction and Reranking, accepted at ICMR 2012, Hong-kong, ACM
81. wos	J. Novák, D. Hoksza, J. Lokoč, T. Skopal On Optimizing the Non-metric Similarity Search in Tandem Mass Spectra with Clustering, accepted at ISBRA 2012, Dallas, TX, USA, LNCS, Springer
80. wos	J. Lokoč, T. Skopal, Ch. Beecks, T. Seidl Similarity Search by Earth Mover's Distance using Nonmetric Ground Distances, MMEDIA 2012, Chamonix / Mont Blanc, France, IARIA Press
79. wos	B. Bustos, S. Kreft, T. Skopal Adapting Metric Indexes for Searching in Multi-Metric Spaces, Multimedia Tools and Applications (MTAP), 58(3): 467-496, Springer [SpringerLink] [full paper (preprint) © Springer]
78.	J. Novák, T. Skopal, D. Hoksza, J. Lokoč Non-metric Similarity Search of Tandem Mass Spectra Including Posttranslational Modifications, Journal of Discrete Algorithms, 13:19-31, Elsevier, May 2012 [ScienceDirect] [full paper (preprint) © Elsevier]
77. wos	T. Skopal, J. Lokoč, B. Bustos D-cache: Universal Distance Cache for Metric Access Methods, IEEE Transactions on Knowledge and Data Engineering (TKDE), 24(5): 868-881, IEEE [IEEE DL] [full paper (preprint) © IEEE]

2011

76.

M. Kruliš, J. Lokoč, Ch. Beecks, T. Skopal, T. Seidl
Processing Signature Quadratic Form Distance on Many-Core GPU Architecture, CIKM 2011, Glasgow, UK, ACM
[ACM digital library] [full paper © ACM Press]

75.

P. Vojtáš, J. Pokorný, M. Nečaský, T. Skopal, K. Matoušek, J. Kubalík, O. Novotný, M. Maryška
SoSIReČR - IT professional social network, CASoN 2011

74.

Ch. Beecks, T. Skopal, K. Schöffmann, T. Seidl,
Towards Large-Scale Multimedia Exploration, DBRank 2011 (in conjunction with VLDB 2011), Seattle, WA, USA
[full paper © VLDB Endowment] [Prezi presentation]

73.

J. Brocke, J. Becker, A. Braccini, R. Butleris, B. Hofreiter, K. Kapočius, M. Marco, G. Schmidt, S. Seidel, A. Simons, T. Skopal, A. Stein, S. Stieglitz, R. Suomi, G. Vossen, R. Winter, S. Wrycza
Current and Future Issues in BPM Research: A European Perspective from the ERCIS Meeting 2010, Communications of the Association for Information Systems (CAIS), Vol. 28, AISeL, 2011
[AISeL]

72.

wos

J. Galgonek, D. Hoksza, T. Skopal
SProt: sphere-based protein structure similarity algorithm, Proteome Science, Vol. 9(Suppl 1), BioMed Central, 2011
[BioMed Central]

71.

wos

T. Skopal, B. Bustos
On Nonmetric Similarity Search Problems in Complex Domains, ACM Computing Surveys, 43(4):34:1-34:50, October 2011
[ACM digital library] [full paper (preprint) © ACM Press]

70.

J. Lokoč, Ch. Beecks, T. Seidl, T. Skopal
Parameterized Earth Mover’s Distance for Efficient Metric Space Indexing, SISAP 2011, Lipari, Italy, ACM
[ACM digital library] [full paper © ACM Press]

69.

J. Moško, J. Lokoč, T. Skopal
Clustered Pivot Tables for I/O-optimized Similarity Search, SISAP 2011, Lipari, Italy, ACM
[ACM digital library] [full paper © ACM Press]

68.

T. Bartoš, A. Eckhardt, T. Skopal
Fuzzy Approach to Non-metric Similarity Indexing, SISAP 2011, Lipari, Italy, ACM
[ACM digital library] [full paper © ACM Press]

67.

J. Novák, T. Skopal, D. Hoksza, J. Lokoč, J. Galgonek
Protein Sequences Identification using NM-tree, SISAP 2011, Lipari, Italy, ACM
[ACM digital library] [full paper © ACM Press]

66.

BP

J. Lokoč, M.L. Hetland, T. Skopal, Ch. Beecks
Ptolemaic Indexing of the Signature Quadratic Form Distance, SISAP 2011, Lipari, Italy, ACM
[ACM digital library] [full paper © ACM Press] [Prezi presentation]

65.

wos

V. Dohnal, T. Skopal,
Preface, Information Systems, 36(4):707, Elsevier, 2011
[ScienceDirect]

64.

C. Beecks, J. Lokoč, T. Seidl, T. Skopal
Indexing the Signature Quadratic Form Distance for Efficient Content-Based Multimedia Retrieval, ICMR 2011, Trento, Italy, ACM
[ACM digital library] [full paper © ACM Press] [PDF presentation]

63.

T. Skopal, T. Bartoš, J. Lokoč
On (not) indexing quadratic form distance by metric access methods, EDBT 2011, Uppsala, Sweden, ACM
[ACM digital library] [full paper © ACM Press] [PDF presentation]

62.

wos

B. Bustos, T. Skopal
Nonmetric Similarity Search Problems in Very Large Collections, ICDE 2011, Hannover, Germany, IEEE
[IEEE CS] [paper © IEEE CS] [tutorial slides]

2010

61.

T. Skopal
Where are you heading, metric access methods? A provocative survey, invited paper at SISAP 2010, Istanbul, Turkey, ACM DL
[ACM digital library] [full paper © ACM Press] [PDF presentation]

60.

BP

J. Novák, T. Skopal, D. Hoksza, J. Lokoč
Improving the Similarity Search of Tandem Mass Spectra using Metric Access Methods, SISAP 2010, Istanbul, Turkey, ACM DL
[ACM digital library] [full paper © ACM Press]

59.

J. Lokoč, T. Skopal
On Applications of Parameterized Hyperplane Partitioning, SISAP 2010, Istanbul, Turkey, ACM DL
[ACM digital library] [full paper © ACM Press]

58.

B. Bustos, T. Skopal
Beyond the Metric Space Model, ACM SIGSPATIAL Special, 2(2):20-23, July 2010
[ACM Digital library] [full paper (preprint) © ACM Press]

57.

T. Skopal, J. Lokoč
Answering Metric Skyline Queries by PM-tree, DATESO 2010, Štědronín-Plazy, Czech Republic, CEUR proceedings volume 567
[CEUR] [full paper] [PPT presentation]

2009

56.

T. Skopal, J. Lokoč,
On Metric Skyline Processing by PM-tree, SIRET technical report 1-09, arXiv.org>cs> arXiv:0910.0983, 2009
[arXiv.org]

55.

T. Skopal, V. Dohnal, M. Batko, P. Zezula
Distinct Nearest Neighbors Queries for Similarity Search in Very Large Multimedia Databases, ACM WIDM 2009 (workshop at ACM CIKM 2009), Hong Kong, China
[ACM digital library] [full paper © ACM Press] [PDF presentation] [bibtex]

54.

wos

A. Eckhardt, T. Skopal, P. Vojtas
On fuzzy vs. metric similarity search in complex databases, FQAS 2009, Roskilde, Denmark, LNAI 5822, Springer
[SpringerLink] [full paper © Springer] [PPT presentation] [bibtex]

53.

wos

T. Skopal, B. Bustos
On Index-free Similarity Search in Metric Spaces, DEXA 2009, Linz, Austria, LNCS 5690, Springer
[SpringerLink] [full paper © Springer] [PPT presentation] [bibtex]

52.

T. Skopal, P. Zezula (Eds.)
SISAP 2009, Proceedings of the 2nd International Workshop on Similarity Search and Applications, Prague, Czech Republic, IEEE

51.

T. Skopal, J. Lokoč
New Dynamic Construction Techniques for M-tree, Journal of Discrete Algorithms, 7(1):62-77, Elsevier, March 2009
[ScienceDirect] [full paper (preprint) © Elsevier] [bibtex]

50.

O. Danko, T. Skopal
Elliptic Indexing of Multidimensional Databases, ADC 2009, Wellington, New Zealand, Australian Computer Society
[CRPIT] [full paper © Australian Computer Society]

2008

49.	D. Hoksza, T. Skopal Native Multidimensional Indexing in Relational Databases, COMAD 2008, Mumbai, India, Computer Society of India [ACM SIGMOD online] [full paper © Computer Society of India]
48. wos	T. Skopal, J. Lokoč NM-tree: Flexible Approximate Similarity Search in Metric and Non-metric Spaces, DEXA 2008, Turin, Italy, LNCS 5181, Springer [SpringerLink] [full paper © Springer] [PPT presentation] [bibtex]
47. BP wos(2x)	J. Lokoč, T. Skopal On Reinsertions in M-tree, SISAP 2008, (workshop at ICDE 2008), Cancun, Mexico, IEEE [IEEE CS] [full paper © IEEE CS] [PPT presentation] [bibtex]

2007

46. wos	T. Skopal Unified Framework for Fast Exact and Approximate Search in Dissimilarity Spaces, ACM Transactions on Database Systems (TODS) 32(4):29:1-29:47, November 2007 [ACM digital library] [full paper (preprint) © ACM Press] [bibtex]
45. wos	T. Skopal, D. Hoksza Improving the Performance of M-tree Family by Nearest-Neighbor Graphs, ADBIS 2007, Varna, Bulgaria, LNCS 4690, Springer [SpringerLink] [full paper © Springer] [unpublished supplement] [bibtex]
44. wos	J. Klíma, T. Skopal Shape Extraction Framework for Similarity Search in Image Databases, DATESO 2007, Desná-Černá Říčka, Czech Republic, CEUR proceedings volume 235 [CEUR] [full paper] [PPT presentation]
43. wos	D. Hoksza, T. Skopal Index-based approach to similarity search in protein and nucleotide databases, DATESO 2007, Desná-Černá Říčka, Czech Republic, CEUR proceedings volume 235 [CEUR] [full paper] [PPT presentation]
42. wos	T. Skopal, D. Hoksza, J. Pokorný Construction of Tree-based Indexes for Level-Contiguous Buffering Support, DASFAA 2007, Bangkok, Thailand, LNCS 4443, Springer [SpringerLink] [full paper © Springer] [PPT presentation] [bibtex]

2006

41.	Skopal T.: Similarity Search in Multimedia Databases, habilitation thesis, Faculty of Mathematics and Physics, Charles University in Prague, 2006 [full PDF] [BibTeX]
40.	B. Bustos, T. Skopal Dynamic Similarity Search in Multi-Metric Spaces, ACM MIR 2006 (a workshop at ACM Multimedia 2006), Santa Barbara, CA, USA [ACM digital library] [full paper © ACM Press] [poster] [bibtex]
39.	P. Vojtáš, T. Skopal (Eds.) DATAKON 2006, Proceedings of the annual Database Conference, Masaryk University in Brno, 2006
38. wos	T. Skopal, M. Krátký, J. Pokorný, V. Snášel A New Range Query Algorithm for Universal B-trees, Information Systems, 31(6):489-511, Elsevier, 2006 [ScienceDirect] [full paper © Elsevier] [bibtex]
37. BP wos	T. Skopal On Fast Non-Metric Similarity Search by Metric Access Methods, EDBT 2006, Munich, Germany, LNCS 3896, Springer [SpringerLink] [full paper © Springer] [PPT presentation] [unpublished supplement] [source codes & data] [bibtex]

2005

36. wos	T. Skopal, J. Pokorný, V. Snášel Nearest Neighbours Search using the PM-tree, DASFAA 2005, Beijing, China, LNCS 3453, Springer [SpringerLink] [full paper © Springer] [PPT presentation] [bibtex]
35. wos	T. Skopal, P. Moravec Modified LSI Model for Efficient Search by Metric Access Methods, ECIR 2005, Santiago de Compostela, Spain, LNCS 3408, Springer [SpringerLink] [full paper © Springer] [bibtex]
34.	T. Skopal, M. Kolovrat, V. Snášel An Application of LSI and M-tree in Image Retrieval (in czech), ZNALOSTI 2005, Stará Lesná, Slovakia [full paper]

2004

33. wos	M. Krátký, T. Skopal, V. Snášel Multidimensional Term Indexing for Efficient Processing of Complex Queries, Cybernetics, 40(3):381-396, ASCR, 2004 [full PDF] [bibtex]
32.	T. Skopal Metric Indexing in Information Retrieval, Ph.D. thesis, VŠB-Technical University of Ostrava, 2004 [full PDF]
31. wos	T. Skopal, P. Moravec, J. Pokorný, V. Snášel Metric Indexing for the Vector Model in Text Retrieval, SPIRE 2004, Padova, Italy, LNCS 3246, Springer [SpringerLink] [full paper © Springer] [bibtex]
30. wos	T. Skopal, J. Pokorný, V. Snášel PM-tree: Pivoting Metric Tree for Similarity Search in Multimedia Databases, ADBIS 2004, local proceedings (research communications), Budapest, Hungary [full paper]
29.	T. Skopal Pivoting M-tree: A Metric Access Method for Efficient Similarity Search, DATESO 2004, Desná-Černá Říčka, Czech Republic, available at CEUR, Volume 98, ISSN 1613-0073 [full paper]
28.	T. Skopal, M. Krátký, V. Snášel Metric and Semi-metric Indexing of Vector Models in Information Retrieval Systems (in czech), ZNALOSTI 2004, Brno, Czech Republic
27.	M. Krátký, J. Pokorný, T. Skopal, V. Snášel Implementation of XPath Axes in the Multidimensional Approach to Indexing XML Data (in czech), ZNALOSTI 2004, Brno, Czech Republic
26.	M. Krátký, V. Snášel, P. Zezula, J. Pokorný, T. Skopal Efficient Processing of Narrow Range Queries in the R-Tree, technical report, Amphora Research Group (ARG), 11 pages, 2004 [full paper]

2003

25.	M.Krátký, T.Skopal, V.Snášel Image Compression Using Space-Filling Curves, ITAT 2003, High Tatras, Slovakia [PPT presentation]
24. wos	T.Skopal, P.Moravec, J.Pokorný, M.Krátký, V.Snášel An Efficient Implementation of the Vector Model in Information Retrieval, RCDL 2003, St. Petersburg, Russia [link to the full paper]
23.	T.Skopal, M.Krátký, V.Snášel An Efficient Implementation of the Vector Model for Information Retrieval (in czech), DATAKON 2003, Brno, Czech Republic
22.	M. Krátký, T. Skopal, V. Snášel Efficient Searching in Face Collections (in czech), DATAKON 2003, Brno, Czech Republic
21. wos	T.Skopal, J.Pokorný, M.Krátký, V.Snášel Revisiting M-tree Building Principles, ADBIS 2003, Dresden, Germany, LNCS 2798, Springer [SpringerLink] [full paper © Springer] [PPT presentation] [bibtex]
20.	T. Skopal Neural networks in Information Retrieval (in czech), technical report, 9 pages, VŠB-Technical University of Ostrava, 2003 [full paper]
19.	J. Dvorský, M. Krátký, T. Skopal, V. Snášel Benchmarking the Multidimensional Approach for Term Indexing, DATESO 2003, Desná-Černá Říčka, Czech Republic
18.	M. Krátký, T. Skopal Benchmarking the UB-tree, DATESO 2003, Desná-Černá Říčka, Czech Republic [full paper]
17. wos	J.Dvorský, M.Krátký, T.Skopal, V.Snášel Term Indexing in Information Retrieval Systems, PSMP workshop at CIC'03, Las Vegas, Nevada, USA, CSREA Press
16. wos	T.Skopal, V.Snášel, M.Krátký, V.Svátek Searching the Internet Using Topological Analysis of Web Pages, PSMP workshop at CIC'03, Las Vegas, Nevada, USA, CSREA Press
15.	T. Skopal Metric Indexing of Vector Models in Information Retrieval, WOFEX 2003, Ostrava, Czech Republic
14.	M.Krátký, T.Skopal, V.Snášel, Multidimensional Approach for Non-trivial Term Searching (in czech), ZNALOSTI 2003, ISBN 80-248-0229-5, Ostrava, Czech Republic [full paper]
13.	J.Dvorský, T.Skopal, V.Snášel Word-based Compression Methods - Survey Report, Transactions of the VŠB-Technical University of Ostrava, Computer Science and Mathematics Series, Vol.2, 2003
12.	D. Barashev, M. Krátký, T. Skopal Modern Approaches to Indexing XML Data, Transactions of the VŠB-Technical University of Ostrava, Computer Science and Mathematics Series, Vol.2, 2003

2002

11. wos	M.Krátký, J.Pokorný, T.Skopal, V.Snášel, The Geometric Framework for Exact and Similarity Querying XML Data, EurAsia ICT 2002, Shiraz, Iran, LNCS 2510, Springer [SpringerLink] [full paper © Springer]
10.	M.Krátký, J.Pokorný, T.Skopal, V.Snášel, The Geometric Approach for Indexing XML Data, DATAKON 2002, ISBN 80-210-2958, Brno, Czech Republic
9.	T.Skopal, M.Krátký, V.Snášel, Geometric Indexing and Querying of Multimedia Data (in czech), DATAKON 2002, ISBN 80-210-2958, Brno, Czech Republic
8.	T.Skopal, V.Snášel, M.Krátký, Image Recognition Using Finite Automata, Prague Stringology Conference 2002, Prague, Czech Republic [full paper]
7.	T. Skopal, M. Krátký, V. Snášel, Properties Of Space Filling Curves And Usage With UB-trees, ITAT 2002, Malino Brdo, Slovakia [full paper]
6.	V.Snášel, T.Skopal, D.Ďuráková, Navigation Through Query Result Using Concept Order, ADBIS 2002, Research Communications, Bratislava, Slovakia [full paper] [PPT presentation]
5.	T.Skopal ACB Compression Method and Query Preprocessing in Text Retrieval Systems, DATESO 2002, Desná, Czech Republic [full paper] [PPT presentation]
4.	M.Krátký, T.Skopal, V.Snášel. On Comparison of Several Indexing Methods for Similarity Search in Multimedia Databases (in czech), Kybernetika - história, perspektívy, teória a prax, Žilinská univerzita 2002, Žilina, Slovakia [full paper]
3.	T.Skopal A Data Flow Based GIS Architecture (in czech), GIS OSTRAVA 2002, ISSN 1213-239X, Ostrava, Czech Republic [full paper] [PPT presentation]

2001

2.	T.Skopal A data flow driven information system (in czech), OBJEKTY 2001, ČZU Praha 2001, Prague, Czech Republic
1.	T.Skopal Data processing - Piped GIS (in czech), master thesis, KMI UP Olomouc (with software package)

Bibliography servers: DBLP record, CSB record, Google Scholar