Research Outputs Ioannis Velegrakis


  • Bergamaschi, Sonia; Guerra, Francesco; Interlandi, Matteo; Trillo-Lado, Raquel; Velegrakis, Yannis, "Combining user and database perspective for solving keyword queries over relational databases" in INFORMATION SYSTEMS, v. 55, (In press), p. 1-19. - URL: http://www.sciencedirect.com/science/article/pii/S0306437915001337 . - DOI: 10.1016/j.is.2015.07.005
  • Sara Cadegnani; Francesco Guerra; Sergio Ilarri; Maria del Carmen Rodrıguez-Hernandez; Raquel Trillo-Lado; Yannis Velegrakis; Raquel Amaro, "Exploiting Linguistic Analysis on URLs for Recommending Web Pages: a comparative study" in TRANSACTIONS ON COMPUTATIONAL COLLECTIVE INTELLIGENCE, v. n/a, (In press). - URL: https://disi.unitn.it/~velgias/docs/CadegnaniGIRTVA16.pdf
  • Bykau, Siarhei; Lee, Jihwan; Srivastava, Divesh; Velegrakis, Yannis, ""Tell me more" using Ladders in Wikipedia" in Proceedings of the International Workshop on Databases and the Web (WebDB’17), USA: ACM, 2017, p. 1-6. - ISBN: 9781450349833. Proceedings of: WebDB 2017, Chicago (USA), 14th-19th May 2017. - URL: http://dl.acm.org/citation.cfm?id=3068847 . - DOI: 10.1145/3068839.3068847
  • Lissandrini, Matteo; Brugnara, Martin; Velegrakis, Yannis, "An Evaluation Methodology and Experimental Comparison of Graph Databases", Trento: Università Di Trento, 2017. - (Disi Technical Reports; DISI-17-006). - URL: https://disi.unitn.it/~lissandrini/publications.html , sponsored by: University of Trento
  • K. Stefanidis; E. Ntoutsi; H. Kondylakis; Y. Velegrakis, "Encyclopedia of Social Network Analysis and Mining" in Encyclopedia of Social Network Analysis and Mining, Berlin: Springer, 2017. - ISBN: 978-1-4614-6169-2. - URL: http://www.springer.com/us/book/9781461461692#aboutBook
  • Mottin, Davide; Marascu, Alice; Roy, Senjuti Basu; Das, Gautam; Palpanas, Themis; Velegrakis, Yannis, "A holistic and principled approach for the empty-answer problem" in VLDB JOURNAL, v. 25, n. 4 (2016), p. 597-622. - URL: http://dl.acm.org/citation.cfm?id=2974680 . - DOI: 10.1007/s00778-016-0431-8
  • Aridhi, Sabeur; Montresor, Alberto; Velegrakis, Yannis, "BLADYG: A novel block-centric framework for the analysis of large dynamic graphs" in HPGP 2016 - Proceedings of the ACM Workshop on High Performance Graph Processing, Co-located with HPDC 2016, New York: Association for Computing Machinery, Inc, 2016, p. 39-42. - ISBN: 9781450343503. Proceedings of: ACM Workshop on High Performance Graph Processing, HPGP 2016, Kyoto, Japan, 31st May 2016. - URL: http://dl.acm.org/citation.cfm?id=2915525 . - DOI: 10.1145/2915516.2915525
  • Bergamaschi, Sonia; Guerra, Francesco; Interlandi, Matteo; Trillo-Lado, Raquel; Velegrakis, Yannis, "Combining user and database perspective for solving keyword queries over relational databases" in INFORMATION SYSTEMS, v. 55, (2016), p. 1-19. - URL: http://dl.acm.org/citation.cfm?id=2838632 . - DOI: 10.1016/j.is.2015.07.005
  • Aridhi, Sabeur; Brugnara, Martin; Montresor, Alberto; Velegrakis, Yannis, "Distributed k-core decomposition and maintenance in large dynamic graphs" in DEBS 2016 - Proceedings of the 10th ACM International Conference on Distributed and Event-Based Systems, New York: Association for Computing Machinery, Inc, 2016, p. 161-168. - ISBN: 9781450340212. Proceedings of: 10th ACM International Conference on Distributed and Event-Based Systems, DEBS 2016, Beckman Center of the National Academies of Sciences and Engineering, usa, 2016. - URL: http://delivery.acm.org/10.1145/2940000/2933299/p161-aridhi.pdf?ip=193.205.210.74&id=2933299&acc=ACTIVE%20SERVICE&key=296E2ED678667973%2E532136EDD1F8E584%2E4D4702B0C3E38B35%2E4D4702B0C3E38B35&CFID=879469915&CFTOKEN=35248491&__acm__=1482412536_1285019ac5f1e71ee5d9c8541f08272a . - DOI: 10.1145/2933267.2933299
  • Spyros Sioutas; Yannis Velegrakis ; Valia Kordoni (edited by), "Elsevier International Journal of Computers and Electrical Engineering. Special section on “New Trends in Humanistic Informatics: Implementations and Applications”", by VV.AA., Amsterdam: Elsevier, 2016. - URL: http://list.dia.uniroma3.it/pipermail/dbitaly/2016-June/001589.html
  • Sartori, Enrico; Velegrakis, Yannis; Guerra, Francesco, "Entity-based keyword search in web documents" in TRANSACTIONS ON COMPUTATIONAL COLLECTIVE INTELLIGENCE, v. 9630, (2016), p. 21-49. - URL: http://dl.acm.org/citation.cfm?id=2958874 . - DOI: 10.1007/978-3-662-49521-6_2
  • Lissandrini, Matteo; Mottin, Davide; Velegrakis, Yannis; Palpanas, Themis, "Multi-Exemplar Queries: Searching in Complex Information Spaces Using Simple Examples", Italia: Unitn, 2016
  • Bergamaschi, Sonia; Ferrari, Davide; Guerra, Francesco; Simonini, Giovanni; Velegrakis, Yannis, "Providing Insight into Data Source Topics" in JOURNAL ON DATA SEMANTICS, v. 5, n. 4 (2016), p. 211-228. - URL: http://www.springer.com/computer/database+management+%26+information+retrieval/journal/13740 . - DOI: 10.1007/s13740-016-0063-6
  • Ioannou, Ekaterini; Velegrakis, Yannis, "Searching Web 2.0 data through entity-based aggregation" in TRANSACTIONS ON COMPUTATIONAL COLLECTIVE INTELLIGENCE, v. 9630, (2016), p. 159-174. - URL: http://dl.acm.org/citation.cfm?id=2958879 . - DOI: 10.1007/978-3-662-49521-6_7
  • Papadimitriou, Dimitra; Koutrika, Georgia; Mylopoulos, John; Velegrakis, Yannis, "The goal behind the action: Toward goal-aware systems and applications" in ACM TRANSACTIONS ON DATABASE SYSTEMS, v. 41, n. 4 (2016), p. 1-43. - URL: http://dl.acm.org/citation.cfm?id=2934666 . - DOI: 10.1145/2934666
  • Bykau, Siarhei; Korn, Flip; Srivastava, Divesh; Velegrakis, Yannis, "Fine-grained controversy detection in Wikipedia" in Proceedings of ICDE 2015, Washington: IEEE Computer Society, 2015, p. 1573-1584. - ISBN: 9781479979639. Proceedings of: 2015 31st IEEE International Conference on Data Engineering, ICDE 2015, Seoul (South Korea), 13th-17th April 2015. - DOI: 10.1109/ICDE.2015.7113426
  • Papadimitriou, Dimitra; Velegrakis, Yannis; Koutrika, Georgia; Mylopoulos, John, "Goals in Social Media, information retrieval and intelligent agents" in Proceedings - ICDE2015, Washington: IEEE Computer Society, 2015, p. 1538-1540. - ISBN: 9781479979639. Proceedings of: 2015 31st IEEE International Conference on Data Engineering, ICDE 2015, Seoul (South Korea), 13th April-17th April 2015. - URL: http://www.computer.org/csdl/proceedings/icde/2015/7964/00/07113421-abs.html . - DOI: 10.1109/ICDE.2015.7113421
  • Cadegnani, S.; Guerra, F.; Ilarri, S.; Rodriguez-Hernandez, M.; Trillo-Lado, R.; Velegrakis, Y., "Recommending Web Pages Using Item-Based Collaborative Filtering Approache" in Proceefings of IKC 2015, Berlin: Springer, 2015, p. 1-13. - (LECTURE NOTES IN COMPUTER SCIENCE). Proceedings of: IKC 2015, Coimbra (Portugal), 8th-9th September 2015. - URL: http://www.keystone-cost.eu/ikc2015/accepted_papers.php . - DOI: 0.1007/978-3-319-27932-9 2
  • Kozikowski, P.; Ioannou, E.; Velegrakis, Y.; Guerra, F., "Support of Part-whole Relations in Query Answering" in Proceedings of IKC 2015, Berlin: Springer, 2015, p. 1-14. - (LECTURE NOTES IN COMPUTER SCIENCE). Proceedings of: IKC 2015, Coimbra (Portugal), 8th-9th September 2015. - URL: http://www.keystone-cost.eu/ikc2015/program.php . - DOI: 10.1007/978-3-319-27932-9 9
  • M. Haddad; J. Stevovic; A. Chiasera; Y. Velegrakis; M. Hacid, "Access Control for Data Integration in Presence of Data Dependencies" in roceedings of the 19th International Conference on Database Systems for Advanced Applications, Berlin: Springer, 2014, p. 203-217. - (LECTURE NOTES IN COMPUTER SCIENCE; 8422.2). - ISBN: 9783319058122. Proceedings of: DASFAA 2014, Bali, Indonesia, 21st-24th April 2014. - URL: http://disi.unitn.it/~velgias/docs/HaddadSCVH14.pdf . - DOI: 10.1007/978-3-319-05813-9-14
  • D. Mottin; M. Lissandrini; Y. Velegrakis; T. Palpanas, "Exemplar Queries: Give me an example of What you Need" in PROCEEDINGS OF THE VLDB ENDOWMENT, v. 7, n. 5 (2014), p. 365-376. - URL: http://www.vldb.org/pvldb/vol7/p365-mottin.pdf
  • D. Mottin; A. Marascu; S. Basu Roy; G. Das; T. Palpanas; Y. Velegrakis, "IQR: An Interactive Query Relaxation System for the Empty-Answer Problem" in Proceedings of the 33rd International Conference on Management of Data, New York: ACM, 2014, p. 1095-1098. - ISBN: 9781450323765. Proceedings of: SIGMOD 2014, Snowbird, Utah, USA, 22nd June-27th June 2014. - URL: http://delivery.acm.org/10.1145/2600000/2594512/p1095-mottin.pdf?ip=193.205.210.41&id=2594512&acc=ACTIVE%20SERVICE&key=296E2ED678667973%2E532136EDD1F8E584%2E4D4702B0C3E38B35%2E4D4702B0C3E38B35&CFID=478968223&CFTOKEN=72293283&__acm__=1423829111_7be41ff111a8119f9d77bebc6ce5dc08 . - DOI: 10.1145/2588555.2594512
  • D. Mottin; M. Lissandrini; T. Palpanas; Y. Velegrakis, "Searching with XQ: the eXemplar Query Search Engine" in Proceedings of the 33rd International Conference on Management of Data, New York: ACM, 2014, p. 901-904. - ISBN: 9781450323765. Proceedings of: SIGMOD 2014, Snowbird, Utah, USA, 22nd-27th June 2014. - URL: http://disi.unitn.it/~velgias/docs/MottinLVP14b.pdf . - DOI: 10.1145/2588555.2594529
  • A. Guerrieri; A. Montresor; Y. Velegrakis, "Top-k item identification on dynamic and distributed datasets" in Proceedings of the 20th International Conference on Parallel Processing, Euro-Par 2014, Berlin: Springer Verlag, 2014, p. 270-281. - (LECTURE NOTES IN COMPUTER SCIENCE; 8632). - ISBN: 9783319098722. Proceedings of: Euro-par 2014, Porto, Portugal, 25th August-29th August 2014. - URL: http://link.springer.com/chapter/10.1007/978-3-319-09873-9_23#page-1 . - DOI: 10.1007/978-3-319-09873-9_23
  • D. Mottin; A. Marascu; S. Basu Roy; G. Das; T. Palpanas; Y. Velegrakis, "A Probabilistic Optimization Framework for the Empty-Answer Problem" in PROCEEDINGS OF THE VLDB ENDOWMENT, v. 6, n. 14 (2013), p. 1762-1773. - URL: http://delivery.acm.org/10.1145/2560000/2556560/p1762-mottin.pdf?ip=193.205.210.41&id=2556560&acc=ACTIVE%20SERVICE&key=296E2ED678667973%2E532136EDD1F8E584%2E4D4702B0C3E38B35%2E4D4702B0C3E38B35&CFID=618502739&CFTOKEN=54614373&__acm__=1421337401_a792ca66a87883a4bbb14064463851e6 . - DOI: 10.14778/2556549.2556560
  • S. Bergamaschi; F. Guerra; M. Interlandi; S. Rota; R. Trillo; Y. Velegrakis, "Code 105867 Using a HMM based approach for mapping keyword queries into database terms" in Proceedings of the 21st Italian Symposium on Advanced Database Systems, Reggio Calabria: Universita Reggio Calabria and Centro di Competenza (ICT-SUD), 2013, p. 239-246. - ISBN: 9781629939490. Proceedings of: SEBD 2013, Roccella Jonica, Reggio Calabria, 30th June-4th July 2013. - URL: http://qfrd.pure.elsevier.com/ar/publications/using-a-hmm-based-approach-for-mapping-keyword-queries-into-database-terms(fb31422d-2e32-4a68-babe-1ddc685b3385).html
  • D. Mottin; T. Palpanas; Y. Velegrakis, "Entity Ranking Using Click-Log Information" in INTELLIGENT DATA ANALYSIS, v. 17, n. 5 (2013), p. 837-856. - URL: http://disi.unitn.it/~velgias/docs/MottinPV13.pdf . - DOI: 10.3233/IDA-130609
  • E. Ioannou; N. Rassadko; Y. Velegrakis, "On Generating Benchmark Data for Entity Matching" in JOURNAL ON DATA SEMANTICS, v. 2, n. 1 (2013), p. 37-56. - URL: http://download.springer.com/static/pdf/173/art%253A10.1007%252Fs13740-012-0015-8.pdf?auth66=1421395519_32f513eb17d5af0df745c35d607ff9eb&ext=.pdf . - DOI: 10.1007/s13740-012-0015-8
  • S. Bykau; F. Rizzolo; Y. Velegrakis, "Query Answering System for Data with Evolution Relationships" in Proceedings of the 32nd International Conference on Management of Data (ACM SIGMOD '13), New York: ACM, 2013, p. 989-992. - ISBN: 9781450320375. Proceedings of: SIGMOD 2013, New York (USA), June 22nd-June 27th 2013. - URL: http://delivery.acm.org/10.1145/2470000/2463687/p989-bykau.pdf?ip=193.205.210.41&id=2463687&acc=ACTIVE%20SERVICE&key=296E2ED678667973%2E532136EDD1F8E584%2E4D4702B0C3E38B35%2E4D4702B0C3E38B35&CFID=472369604&CFTOKEN=89735938&__acm__=1421396045_feffc1f3bf159c9de29b2e09e65ada52 . - DOI: 10.1145/2463676.2463687
  • S. Bergamaschi; F. Guerra; M. Interlandi; R. Trillo-Lado; Y. Velegrakis, "QUEST: A Keyword Search System for Relational Data based on Semantic and Machine Learning Techniques" in Proceedings of the 39th International Conference on Very Large Databases (VLDB'13), United States: VLDB Endowment Inc., 2013, p. 1222-1225. - (PROCEEDINGS OF THE VLDB ENDOWMENT; 6 (12)). Proceedings of: VLDB'13, Riva del Garda (Trento), Italy, August 25th- Aug 30th 2013. - URL: https://dbgroup.unimo.it/~interlandi/vldb_2013.pdf . - DOI: 10.14778/2536274.2536281
  • I. Bedini; B. Elser; Y. Velegrakis, "The Trento big data platform for public administration and large companies: use cases and opportunities" in Proceedings of the 39th International (VLDB'13), San Jose, California (USA): VLDB Endowment Inc., 2013, p. 1166-1167. - (PROCEEDINGS OF THE VLDB ENDOWMENT; 6 (11)). Proceedings of: VLDB'13, Riva Del Garda (TN), Aug 26th- Aug 30th 2013. - URL: http://delivery.acm.org/10.1145/2540000/2536242/p1166-bedini.pdf?ip=193.205.210.41&id=2536242&acc=ACTIVE%20SERVICE&key=296E2ED678667973%2E532136EDD1F8E584%2E4D4702B0C3E38B35%2E4D4702B0C3E38B35&CFID=618502739&CFTOKEN=54614373&__acm__=1421337806_fbd06cb0ef90e282e2e49cb5b3579b34 . - DOI: 10.14778/2536222.2536242
  • O. Hassanzadeh; A. Kementsietsidis; Y. Velegrakis, "Data Management Issues on the Semantic Web" in Proceedings of ICDE 2012, New York: IEEE Computer Society, 2012, p. 1204-1206. Proceedings of: ICDE 2012, Washington DC, USA, 1st April-5th April 2012. - URL: http://disi.unitn.it/~velgias/docs/HassanzadehKV12.pdf . - DOI: 10.1109/ICDE.2012.141
  • T. Palpanas; Y. Velegrakis, "dbTrento: the data and information management group at the University of Trento" in SIGMOD RECORD, v. 41, n. 3 (2012), p. 28-33. - URL: http://delivery.acm.org/10.1145/2390000/2380784/p28-palpanas.pdf?ip=193.205.210.41&id=2380784&acc=ACTIVE%20SERVICE&key=296E2ED678667973%2E532136EDD1F8E584%2E4D4702B0C3E38B35%2E4D4702B0C3E38B35&CFID=618502739&CFTOKEN=54614373&__acm__=1421335222_e3868624d5802b1b7029ff58309535af . - DOI: 10.1145/2380776.2380784
  • E. Ioannou; W. Nejdl; C. Niederee; Y. Velegrakis, "Embracing Uncertainty in Entity Linking" in R. De Virgilio, F. Guerra, Y. Velegrakis (edited by), "Semantic Search over the Web", Berlin: Springer, 2012, p. 223-251. - (DATA-CENTRIC SYSTEMS AND APPLICATIONS). - ISBN: 9783642250071. - URL: http://disi.unitn.it/~velgias/docs/IoannouNNV12.pdf . - DOI: 10.1007/978-3-642-25008-8_9
  • R. De Virgilio; F. Giunchiglia; F. Guerra; L. Tanca; Y. Velegrakis, "Introduction to the Special Issue on Semantic Web Data Management" in INFORMATION SYSTEMS, v. vol. 37, n. n. 4 (2012), p. 291-293. - URL: http://www.sciencedirect.com/science/article/pii/S0306437911001566 . - DOI: 10.1016/j.is.2011.12.002
  • D. Srivastava; I. Velegrakis, "Method and apparatus for associating metadata with data", US8145624 B1. - Filing date: 2012. - URL: http://www.google.com/patents/US8145624
  • S. Bykau; J. Mylopoulos; F. Rizzolo; Y. Velegrakis, "On Modeling and Querying Concept Evolution" in JOURNAL ON DATA SEMANTICS, v. 1, n. 1 (2012), p. 31-55. - URL: http://www.cs.toronto.edu/~flavio/JODS-2012.pdf . - DOI: 10.1007/s13740-012-0001-1
  • Y. Velegrakis, "Ranking Query Results based on the Query Semantics and in the Presence of Linkage and Evolution" in VLDB 2012 proceedings, n.a: n/a, 2012. Proceedings of: International Workshop on Ranking in Databases (DBRank), Istanbul, Turkey, August 27th 2012. - URL: http://chenwsdb.fulton.ad.asu.edu/DBRank2012/InvitedSpeaker.html
  • R. De Virgilio; F. Guerra; Y. Velegrakis (edited by), "Semantic Search Over the Web", by vv.aa., Berlin: Springer, 2012, 417 p. - (DATA-CENTRIC SYSTEMS AND APPLICATIONS). - ISBN: 9783642250071. - URL: http://www.springer.com/computer/database+management+%26+information+retrieval/book/978-3-642-25007-1 . - DOI: 10.1107/978-3-642-25008-8
  • S. Bergamaschi; E. Domnori; F. Guerra;S. Rota; R. Trillo Lado; Y. Velegrakis, "Understanding the Semantics of Keyword. Queries on Relational Data Without Accessing the Instance" in R. De Virgilio, F. Guerra, Y. Velegrakis (edited by), Semantic Search over the Web, Berlin: Springer, 2012, p. 129-156. - (DATA-CENTRIC SYSTEMS AND APPLICATIONS). - ISBN: 9783642250071. - URL: http://disi.unitn.it/~velgias/docs/BergamaschiDGRLV12.pdf . - DOI: 10.1007/978-3-642-25008-8_6
  • S. Bergamaschi; F. Guerra; S. Rota; Y. Velegrakis, "A Hidden Markov Model Approach to Keyword-based Search over Relational Databases" in Proceedings of the 30th International Conference on Conceptual Modeling, Berlin, Germany: Springer, 2011, p. 411-420. - (LECTURE NOTES IN COMPUTER SCIENCE). Proceedings of: ER 2011, Brussels, Belgium, 31st October-3rd November 2011. - DOI: 10.1007/978-3-642-24606-7_31
  • F. Guerra; Y. Velegrakis, "DESWEB: Data engineering meets the semantic web - A message from the chairs" in "Proceedings of ICDE 2011", edited by VV.AA., New York: IEEE, 2011. - ISBN: 9781424491940. - URL: http://desweb2011.unimore.it/pc.html . - DOI: 10.1109/ICDEW.2011.5767657
  • A. Bonifati; G. Mecca; P. Papotti; Y. Velegrakis, "Discovery and Correctness of Schema Mapping Transformations" in Z. Bellahsene, A. Bonifati, E. Rahm (edited by), Schema Matching and Mapping, Berlin: Springer, 2011, p. 111-147. - (DATA-CENTRIC SYSTEMS AND APPLICATIONS). - DOI: 10.1007/978-3-642-16518-4
  • S. Bergamaschi; F. Guerra; S. Rota; Y. Velegrakis, "KEYRY: A Keyword-Based Search Engine over Relational Databases Based on a Hidden Markov Model" in Proceedings of the 7th International Workshop on Foundations and Practices of UML, Berlin: Springer, 2011, p. 328-331. - (LECTURE NOTES IN COMPUTER SCIENCE). Proceedings of: FP-UML 2011, Brussels, Belgium, 31st October-3rd November 2011. - DOI: 10.1007/978-3-642-24574-9_42
  • S. Bergamaschi; E. Domnori; F. Guerra; R. Trillo Lado; Y. Velegrakis, "Keyword search over relational databases: a metadata approach" in Proceedings of the ACM International Conference on Management of Data (SIGMOD), New York, USA: ACM, 2011, p. 565-576. Proceedings of: SIGMOD '11, Athens, Greece, 12th-16th June 2011. - DOI: 10.1145/1989323.1989383
  • S. Bergamaschi; E. Domnori; F. Guerra; R. Trillo Lado; Y. Velegrakis, "Keyword-based Search in Data Integration Systems" in SEBD 2011, Proceedings of the Nineteenth Italian Symposium on Advanced Database, Dagstuhl: Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH, 2011, p. 103-111. Proceedings of: SEBD '11, Maratea, Italy, 26th-29th June 2011
  • E. Ioannou; W. Nejdl; C. Niederee; Y. Velegrakis, "LinkDB: a probabilistic linkage database system" in Proceedings of the 2011 international conference on Management of data, New York, USA: ACM, 2011, p. 1307-1309. Proceedings of: SIGMOD '11, Athens, Greece, 12th-16th June 2011. - DOI: 10.1145/1989323.1989483
  • Z. Bellahsene; A. Bonifati; F. Duchateau; Y. Velegrakis, "On Evaluating Schema Matching and Mapping" in Z. Bellahsene, A. Bonifati, E. Rahm (edited by), Schema Matching and Mapping, Berlin: Springer, 2011, p. 253-291. - (DATA-CENTRIC SYSTEMS AND APPLICATIONS). - DOI: 10.1007/978-3-642-16518-4
  • T. K. Sellis; R. J. Miller; A. Kementsietsidis; Y. Velegrakis (edited by), "Proceedings of the 2011 ACM Sigmod International Conference on Management of Data", by VV.AA., New York: ACM, 2011, 1342 p. - ISBN: 9781450306614. - URL: http://dl.acm.org/citation.cfm?id=1989323
  • A. Bonifati; Y. Velegrakis, "Schema Matching and Mapping: From Usage to Evaluation" in Proceedings of the 14th International Conference on Extending Database Technology, New York: ACM, 2011, p. 527-529. Proceedings of: EDBT '11, Upsala, Sweden, 22nd-24th March 2011. - DOI: 10.1145/1951365.1951431
  • T. Sellis; R. J. Miller.; A. Kementsietsidis; Y. Velegrakis, "SIGMOD 2011 chairs' welcome" in "Proceedings of the ACM SIGMOD International Conference on Management of Data", by T. Kementsietsidis, Y. Velegrakis, edited by VV.AA., New York: ACM, 2011. - ISBN: 9781450306614. - URL: http://www.sigmod2011.org/docs/SIGMOD_2011_WebBooklet.pdf
  • S. Bykau; J. Mylopolous; F. Rizzolo; Y. Velegrakis, "Supporting queries spanning across phases of evolving artifacts using Steiner forests" in Proceedings of CIKM 2011, New York: ACM, 2011, p. 1649-1658. - ISBN: 9781450307178. Proceedings of: CIKM '11, Glasgow, Scotland, 24th-28th October 2011. - URL: http://delivery.acm.org/10.1145/2070000/2063815/p1649-bykau.pdf?ip=193.205.210.41&id=2063815&acc=ACTIVE%20SERVICE&key=296E2ED678667973%2E532136EDD1F8E584%2E4D4702B0C3E38B35%2E4D4702B0C3E38B35&CFID=618502739&CFTOKEN=54614373&__acm__=1421322821_a19dfdfeb49af938e159f721e9f94a0b . - DOI: 10.1145/2063576.2063815
  • A. Katifori; C. Nikolaou; M. Platakis; Y. Ioannidis; A. Tympas; M. Koubarakis; N. Sarris; V. Tountopoulos; E. Tzoanos; S. Bykau; N. Kiyavitskaya; C. Tsinaraki; Y. Velegrakis, "The Papyrus Digital Library: Discovering History in the News" in Proceedings of the International Conference on Theory and Practice of Digital Libraries, Berlin: Springer, 2011, p. 465-468. - (LECTURE NOTES IN COMPUTER SCIENCE). Proceedings of: TPDL '11, Berlin,Germany, 25th-29th September 2011. - DOI: 10.1007/978-3-642-24469-8_51
  • S. Bergamaschi; F. Guerra; S. Rota; Y. Velegrakis, "Understanding Linked Open Data through Keyword Searching: the KEYRY approach" in Proceedings of the 1st international workshop on linked web data management, New York, USA: ACM, 2011, p. 34-35. Proceedings of: LWDM '11, Upsala, Sweden, 25th March 2011. - DOI: 10.1145/1966901.1966912
  • C. Tsinaraki; Y. Velegrakis; N. Kiyavitskaya; J. Mylopoulos, "A Context-based Model for the Interpretation of Polysemous Terms" in On the Move to Meaningful Internet Systems: OTM 2010: Confederated International Conferences: CoopIS, IS, DOA and ODBASE: Proceedings, Part II, Berlin: Springer, 2010, p. 939-956. - (Lecture Notes in Computer Science). - ISBN: 3642169481. Proceedings of: ODBASE’10, Hersonissos, 25th-29th October 2010. - DOI: 10.1007/978-3-642-16949-6_20
  • E. Ioannou; C. Niederee; I. Velegrakis, "A Matching Framework for Entity-Based Aggregation" in Proceedings of the Hellenic Database Management Symposium, Athens: HDMS, 2010, p. [1-2]. Proceedings of: Hellenic Database Management Symposium (HDMS), Cyprus, 30th-3rd July 2010. - URL: http://www.cs.ucy.ac.cy/~hdms2010/en/node/58
  • E. Ioannou; C. Niederee; I. Velegrakis, "Enabling Entity-Based Aggregators for Web 2.0 data" in Proceedings of the 19th international conference on World wide web, New York: ACM, 2010, p. 1119-1120. - ISBN: 9781605587998. Proceedings of: WWW'10, Raleigh, NC, 26th-30th April 2010. - DOI: 10.1145/1772690.1772833
  • S. Bergamaschi; E. Domnori; F. Guerra; M. Orsini; R.T. Lado; I. Velegrakis, "Keymantic: Semantic Keyword based Searching in Data Integration Systems" in PROCEEDINGS OF THE VLDB ENDOWMENT, v. vol. 3, n. no. 2 (2010), p. 1637-1640
  • E. Ioannou; W. Nejdl; C. Niederee; I. Velegrakis, "On-the-fly entity-aware query processing in the presence of linkage" in PROCEEDINGS OF THE VLDB ENDOWMENT, v. vol. 3, n. no. 1 (2010), p. 429-438
  • Y. Velegrakis, "Relational Technologies, Metadata and RDF" in R. De Virgilio, F. Giunchiglia, L. Tanca (edited by), Semantic Web Information Management: A Model-Based Perspective, Heidelberg; New York: Springer, 2010, p. 41-66. - ISBN: 9783642043284
  • R. Fagin; L. M. Haas; M. Hernandez; R. J. Miller; L. Popa; Y. Velegrakis, "Clio: Schema Mapping Creation and Data Exchange" in A. Borgida, V. Chaudhri, P. Giorgini, E. Yu (edited by), Conceptual Modeling: Foundations and Applications, Berlin; Heidelberg: Springer, 2009, p. 198-236. - ISBN: 9783642024627
  • A. Presa; Y. Velegrakis; F. Rizzolo; S. Bykau, "Modeling Associations through Intensional Attributes" in Proceedings of the International Conference on Semantic Modeling (ER), Berlin: Springer, 2009, p. 315-330. - ISBN: 9783642048395. Proceedings of: International Conference on Semantic Modeling, Brazil, 2009. - DOI: 10.1007/978-3-642-04840-1_24
  • F. Rizzolo; I. Velegrakis; J. Mylopoulos; S. Bykau, "Modeling Concept Evolution: A Historical Perspective" in Conceptual Modeling: ER 2009: 8th International Conference on Conceptual Modeling: Proceedings, Berlin: Springer, 2009, p. 331-345. - (LNCS). - ISBN: 9783642048395. Proceedings of: ER’09, Gramado, Brazil, 9th-12th November 2009
  • Y. Velegrakis, Side-Effect-Free View Updates in: "Encyclopedia of Database Systems", New York; London: Springer, 2009, p. 2639-2642
  • Y. Velegrakis, Updates through Views in: "Encyclopedia of Database Systems", New York; London: Springer, 2009, p. 3244-3247
  • S. Bykau; N. Kiyavitskaya; C. Tsinaraki'; Y. Velegrakis, "Bridging the Gap Between Heterogeneous and Semantically Diverse Content of Different Disciplines" in DEXA Workshops, Stati UNITI: IEEE Computer Society, 2008, p. 305-309. - ISBN: 9781424480494. Proceedings of: FlexDBIST, France, 2010. - DOI: 10.1109/DEXA.2010.67
  • B. Alexe; W.C. Tan; Y. Velegrakis, "Comparing and evaluating mapping systems with STBenchmark" in PROCEEDINGS OF THE VLDB ENDOWMENT, v. 1, n. 2 (2008), p. 1468-1471. - DOI: 10.1145/1454159.1454203
  • Y. Velegrakis, "Data Integration, Section in the Article "The AI Research in Greece"", 2008, 4 p. - URL: http://ai-lab-webserver.aegean.gr/EETN/information_processing_and_management#4
  • A. Chiasera ; F. Casati ; F. Daniel ; Y. Velegrakis, "Engineering Privacy Requirements in Business Intelligence Applications" in Secure Data Management: 5th VLDB Workshop: SDM 2008, Berlin, Heidelberg: Springer Verlag, 2008, p. 219-228. - (LNCS). - ISBN: 9783540852582. Proceedings of: SDM 2008 (in conjuction with VLDB 2008), Auckland, New Zealand, 24th August 2008. - DOI: 10.1007/978-3-540-85259-9_15
  • T. Palpanas; J. Chaudhry; P. Andritsos; Y. Velegrakis, "Entity Data Management in OKKAM" in DEXA Workshops, Piscataway (NJ): IEEE Computer Society, 2008, p. 729-733. - ISBN: 9780769532998. Proceedings of: SWAE 2008, Turin, Italy, 1st-5th September 2008. - URL: http://disi.unitn.it/~velgias/docs/PalpanasCAV08.pdf; http://doi.ieeecomputersociety.org/10.1109/DEXA.2008.13
  • A. Morris; Y. Velegrakis; P. Bouquet, "Entity Identification on the Semantic Web" in Proceedings of the 5th Semantic Web Applications and Perspectives, Rome, Trento: UNITN, 2008, p. 1-10. Proceedings of: SWAP, Roma, Italy, 2008
  • Y. Velegrakis, "On the Importance of Updates in Information Integration and Data Exchange Systems (Keynote Talk Abstract)" in In Proceedings of the International Workshop on Databases, Information Systems and Peer-to-Peer Computing, Germania: Springer, 2008, p. 1-12. Proceedings of: DBISP2P, Auckland, New Zealand, Aug 2008
  • B. Alexe; W. C. Tan; Y. Velegrakis, "STBenchmark: Towards a Benchmark for Mapping Systems" in PROCEEDINGS OF THE VLDB ENDOWMENT, v. 1, n. 1 (2008), p. 230-244. - DOI: 10.1145/1453856.1453886
  • D. Srivastava; Y. Velegrakis, "Uniform Management Of Data And Metadata" in Proceedings of the Hellenic Data Management Symposium (HDMS 08), Grecia: HDMS, 2008, p. [n.d.]-[n.d]. Proceedings of: HDMS ¿08, Heraklion, Crete, Greece, July 2008
  • I. Kotidis ; D. Srivastava ; I. Velegrakis, "Updates through views", 7440957. - Filing date: 2008. - URL: http://www.freepatentsonline.com/7440957.html
  • Y. Velegrakis, "Updates: The Neglected Operations" in Proceedings of 6th International Workshop on Databases, Information Systems and Peer-to-Peer Computing, [S.l.: s.n.], 2008. Proceedings of: International Workshop on Databases, Information Systems and Peer-to-Peer Computing (DBISP2P’08), in conjunction with VLDB, Auckland, New Zealand, August 23rd 2008. - URL: http://www.dbgroup.unimo.it/dbisp2p08/cfp.html
  • D. Srivastava; Y. Velegrakis, "Intensional Associations Between Data and Metadata" in Proceedings of the 2007 ACM SIGMOD international conference on Management of data, New York: ACM Press, 2007, p. 401-412. - ISBN: 9781595936868. Proceedings of: ("SIGMOD '07"), Beijing (China), 11th-14th June 2007
  • D. Srivastava ; Y. Velegrakis, "MMS: Using Queries as Data Values for Metadata Management" in Proceedings of the 23rd International Conference on Data Engineering, New York, N.Y.: IEEE Computer Society, 2007, p. 1481-1482. - ISBN: 1424408024. Proceedings of: ICDE, Istanbul, Turkey, April
  • D. Srivastava ; Y. Velegrakis, "Using Queries to Associate Metadata with Data" in Proceeding of 2007 IEEE 23rd International Conference on Data Engineering: ICDE ‘07, Piscataway (NJ): IEEE, 2007, p. 1451-1453. - ISBN: 1424408032. Proceedings of: ICDE, Istanbul, 15th-20th April 2007. - DOI: 10.1109/ICDE.2007.369033
  • Y. Kotidis ; D. Srivastava ; Y. Velegrakis, "Achieving the Much-desired Side-effect-free View Update" in Proceedings of the 6th Hellenic Symposium of Data Management (HDMS ‘06), Grecia: AUTH, 2006, p. 0-0. Proceedings of: Hellenic Symposium on Data Management (HDMS ‘06), Thessaloniki, Greece, 2006
  • Y. Kotidis; D. Srivastava; Y. Velegrakis, "Updates Through Views: A New Hope" in Proceedings of the 22nd International Conference on Data Engineering (ICDE06), New York, N.Y.: IEEE, 2006, p. 13-24. - ISBN: 9780769525709. Proceedings of: ICDE ‘06, Atlanta (GA), USA, 2006
  • Y. Velegrakis; R. Miller; J. Mylopoulos, "Representing and querying data transformations" in Proceedings of the 21st International Conference on Data Engineering, ICDE 2005, USA: IEEE, 2005, p. 81-92. - ISBN: 9780769522852. Proceedings of: International Conference in Data Engineering (ICDE), Tokyo, 5th-8th April 2005
  • P. Andritsos ; A. Fuxman ; A. Kementsietsidis ; R. J. Miller ; Y. Velegrakis, "Kanata: Adaptation and Evolution in Data Sharing Systems" in SIGMOD RECORD, v. 33, n. 4 (2004), p. 32-37. - DOI: 10.1145/1041410.1041416
  • Y. Velegrakis ; R. J. Miller ; L. Popa, "Preserving mapping consistency under schema changes" in VLDB JOURNAL, v. 13, n. 3 (2004), p. 274-293. - DOI: 10.1007/s00778-004-0136-2
  • R. Fagin; M. Hernandez; R. J. Miller; L. Popa; I. Velegrakis, "System and method for translating data from a source schema to a target schema", US20040199905. - Filing date: 2004
  • Y. Velegrakis; R. J. Miller; L. Popa; J. Mylopoulos, "ToMAS: A System for Adapting Mappings while Schemas Evolve" in Proceedings of International Conference in Data Engineering, USA: IEEE, 2004, p. 862-862. - ISBN: 0769520650. Proceedings of: International Conference in Data Engineering (ICDE), USA, 2004. - DOI: 10.1109/ICDE.2004.1320090
  • Y. Velegrakis ; L. Popa ; R. J. Miller, "Adapting Mappings in Frequently Changing Environments", 2003
  • Y. Velegrakis;L. Popa;R. J.Miller, "Adapting Mappings in Frequently Changing Environments", 2003
  • Y. Velegrakis ; R. J. Miller ; L. Popa, "Mapping Adaptation under Evolving Schemas" in Proceedings of the 29th International Conference for Very Large Databases (VLDB ‘03), Berlin: VLDB, 2003, p. 584-595. - ISBN: 0127224424. Proceedings of: VLDB, Berlin, Germany, Sept.2003
  • Y. Velegrakis ; R. J. Miller ; L. Popa ; J. Mylopoulos, "ToMAS: Mapping Adaptation under Evolving Schemas" in 2nd Hellenic Symposium of Data Management (HDMS ‘03), Athens: Authens University of Economics and Business, 2003, p. [1-20]. - ISBN: 0127224424. Proceedings of: HDMS, Athens, September 2003
  • L. Popa; M.A. Hernandez; Y. Velegrakis; R.J. Miller; F. Naumann; H. Ho, "Mapping XML and Relational Schemas with CLIO" in Proceedings of the International Conference in Data Engineering, USA: IEEE, 2002, p. 498-499. - ISBN: 0769515312. Proceedings of: International Conference in Data Engineering (ICDE), Boston, MA, Feb 2002. - DOI: 10.1109/ICDE.2002.994768
  • P. Andritsos; R. Fagin; A. Fuxman; L. Haas; M. Hernández; H. Ho; A. Kementsietsidis; R. J. Miller; F. Nauman; L. Popa; Y. Velegrakis; C. Vilarem; L. Yan, "Schema Management" in IEEE DATA ENGINEERING BULLETIN, v. 25, n. 3 (2002), p. 32-38
  • L. Popa;Y. Velegrakis;R. Fagin;M. Hernandez;R. J. Miller, "Translating Web Data", 2002
  • L. Popa ; Y. Velegrakis ; R. Fagin ; M. Hernandez ; R. J. Miller, "Translating Web Data", 2002
  • L. Popa ; Y. Velegrakis ; M. Hernandez; R. J. Miller; R. Fagin, "Translating Web Data" in Proceedings of 28th International Conference on Very Large Data Bases (VLDB 2002), St. Louis (MO): Morgan Kaufmann, 2002, p. 598-609. - ISBN: 1558608699. Proceedings of: VLDB 2002, Hong-Kong, China, 20th-23rd August 2002. - URL: http://www.informatik.uni-trier.de/~ley/db/conf/vldb/vldb2002.html
  • Y. Velegrakis ; V. Christophides ; P. Constantopoulos, "On Z39.50 Wrapping and Description Logics" in INTERNATIONAL JOURNAL ON DIGITAL LIBRARIES, v. 3, n. 3 (2000), p. 208-220. - DOI: 10.1007/s007990000036
  • Y. Velegrakis ; V. Christophides ; P. Constantopoulos, "Declarative Specification of Z39.50 Wrappers using Description Logics" in Proceedings of 3rd European Conference on Research and Advanced Technology for Digital Libraries (ECDL’99), Paris: ERCIM, 1999, p. 383-402. - ISBN: 3540665587. Proceedings of: ECDL, Paris, France, 1999
  • Y. Velegrakis, "Declarative Specification of Z39.50 Wrappers by Using Description Logics", 1998
  • Y. Velegrakis, "Declarative Specification of Z39.50 Wrappers by Using Description Logics", 1998
  • Y. Velegrakis, "VRW: A system for the creation and Modification of Reports", 1997
  • Y. Velegrakis, "VRW: A System for the Creation and Modification of Reports", 1997