Yannis Stavrakas

publications

Theses

Yannis Stavrakas. Multidimensional Semistructured Data: Representing and Querying Context-Dependent Multifaceted Information on the Web. Ph.D. thesis, Department of Electrical and Computer Engineering, National Technical University of Athens, Greece, 2003. [ in Greek: ]
Ioannis Stavrakas. Design and Implementation of an Object Oriented Bibliographical Database. M.Sc. thesis, Department of Computer Science, University College London, UK, 1992.

Journal articles

Antonis Mandamadiotis, Georgia Koutrika, Stavroula Eleftherakis, Apostolis Glenis, Dimitrios Skoutas, and Yannis Stavrakas. DatAgent: The Imminent Age of Intelligent Data Assistants. Proceedings of VLDB Endowment 14(12): 2815-2818, 2021.
Theodora Galani, George Papastefanatos, Yannis Stavrakas, and Yannis Vassiliou. Defining and Detecting Complex Changes on RDF(S) Knowledge Bases. Journal on Data Semantics, 10(3-4): 367-398, 2021.
Kostis Pristouris, Harry Nakos, Yannis Stavrakas, Konstantinos I. Kotsopoulos, Theofanis Alexandridis, Myrto S. Barda, and Konstantinos P. Ferentinos. An Integrated System for Urban Parks Touring and Management. Urban Science, 5(4), 91, 2021.
Konstantinos P. Ferentinos, Yannis Stavrakas, Harry Nakos, Kostis Pristouris, and Myrto S. Barda. Initial Design and Features of an Augmented Reality System for Urban Park Touring and Management. Presented in 12th International Conference on Computer Science and Information Technology (ICCSIT 2019), Barcelona, December 18-20, 2019. Published in International Journal of Computer Theory and Engineering (IJCTE, ISSN: 1793-8201), Vol. 12, Num. 5, Oct 2020.
Danae Pla Karidi, Yannis Stavrakas, and Yannis Vassiliou. Tweet and Followee Personalized Recommendations Based on Knowledge Graphs. Journal of Ambient Intelligence and Humanized Computing, 9(6):2035-2049, 2018.
Danae Pla Karidi, Harry Nakos, Alexandros Efentakis, and Yannis Stavrakas. CitySense: Combining Geolocated Data for Urban Area Profiling. In International Journal On Advances in Software, v. 10 num. 3&4, 2017.
Marios Meimaris, George Papastefanatos, Stratis Viglas, Yannis Stavrakas, Christos Pateritsas, and Ioannis Anagnostopoulos. A Query Language for Multi-version Data Web Archives. In Journal of Expert Systems, Volume 33, Issue 4, Pages 383-404, August 2016.
Thomas Risse, Elena Demidova, Stefan Dietze, Wim Peters, Nikolaos Papailiou, Katerina Doka, Yannis Stavrakas, Vassilis Plachouras, Pierre Senellart, Florent Carpentier, Amin Mantrach, Bogdan Cautis, Patrick Siehndel, and Dimitris Spiliotopoulos. The ARCOMEM Architecture for Social- and Semantic-Driven Web Archiving. Future Internet 2014, 6, 688-716; doi:10.3390/fi6040688, November 2014.
Vassilis Plachouras, Florent Carpentier, Muhammad Faheem, Julien Masanes, Thomas Risse, Pierre Senellart, Patrick Siehndel, and Yannis Stavrakas. ARCOMEM Crawling Architecture. Future Internet 2014, 6, 518-541, doi:10.3390/fi6030518, August 2014.
Nikolaos Fousteris, Manolis Gergatsoulis, and Yannis Stavrakas. Updating Multidimensional XML documents. International Journal of Web Information Systems (IJWIS), Vol. 4, No. 2, pp. 142-164, 2008.
Yannis Stavrakas, Manolis Gergatsoulis, Christos Doulkeridis, and Vassilis Zafeiris. Representing and Querying Histories of Semistructured Databases Using Multidimensional OEM. Information Systems Journal (IS), Vol. 29, Issue 6, pp. 461-482, 2004.
Theodoros Mitakos, Manolis Gergatsoulis, Yannis Stavrakas, and Efstathios Ioannidis. Representing Time-Dependent Information in Multidimensional XML. Journal of Computing and Information Technology (CIT), Vol. 9, No. 3, 2001.
T. Markousis, D. Tsirikos, M. Vazirgiannis, and Y. Stavrakas. WWW-Enabled Delivery of Interactive Multimedia Documents. Computer Communications Journal 23(3): 242-252, 2000.
J.Aarnisalo, K.Makela, B.Bourgeois, C.Spyropoulos, S.Varoufakis, E.Morten, K.Maglaras, H.Soininen, A.Angelopoulos, D.Eliopoulos, P.Lamberg, H.Papunen, A.Hattula, R.Pietila, S.Elo, C.Ripis, E.Dimou, A.Apostolikas, M.Melakis, M.Economou-Eliopoulos, N.Vassilas, S.Perantonis, N.Ampazis, E.Charou, N.Gustavsson, M.Tiainen, M.Stefouli, D.Delfini, P.Venturini, G.Vouros, Y.Stavrakas, and D.Katsoulas. Integrated Technologies for Minerals Exploration; Pilot Project for Nickel Ore Deposits. Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science, Vol. 108, pp. B151-B163, 1999.

Conference articles

Theodora Galani, Yannis Stavrakas, George Papastefanatos, and Yannis Vassiliou. Evo-Path: Querying Data Evolution Through Complex Changes. 10th International Conference on Data Science, Technology and Applications (DATA 21): 353-361, July 6-8, 2021.
Harry Nakos, Kostis Pristouris, and Yannis Stavrakas. Assessing Visitor Activity in Urban Parks. Urban Complex Systems 2021 (Conference on Complex Systems workshop), Lyon, France, October 26, 2021.
Danae Pla Karidi, Harry Nakos, and Yannis Stavrakas. Automatic Ground Truth Dataset Creation for Fake News Detection in Social Media. 20th International Conference on Intelligent Data Engineering and Automated Learning (IDEAL 2019), Manchester, 14-16 November 2019.
Konstantinos Pontikakos, Myrto S. Barda, Konstantinos I. Kotsopoulos, Yannis Stavrakas, Konstantinos P. Ferentinos. The Geospatial Database of the VR-Park System for Promoting and Touring Urban Parks: the "Pedion Areos" Case Study. 3rd Conference on Geographical Information Systems and Spatial Analytics in Agriculture and Environment, Agricultural University of Athens, Athens, Greece, 11-13 December, 2019.
Giannis Nikolentzos, Polykarpos Meladianos, Yannis Stavrakas, and Michalis Vazirgiannis. K-clique-graphs for Dense Subgraph Discovery. The European Conference on Machine Learning & Principles and Practice of Knowledge Discovery in Databases (ECML-PKDD 2017), Skopje, 18-22 September, 2017.
Giannis Nikolentzos, Polykarpos Meladianos, Francois Rousseau, Yannis Stavrakas, and Michalis Vazirgiannis. Shortest-Path Graph Kernels for Document Similarity. SIGDAT Conference on Empirical Methods in Natural Language Processing (EMNLP 2017), Copenhagen-Denmark, September 9-11, 2017.
Danae Pla Karidi, Harry Nakos, Alexandros Efentakis, and Yannis Stavrakas. CitySense: Retrieving, Visualizing and Combining Datasets on Urban Areas. The Ninth International Conference on Advances in Databases, Knowledge, and Data Applications (DBKDA 2017), Barcelona-Spain, May 21-25, 2017.
Giannis Nikolentzos, Polykarpos Meladianos, Francois Rousseau, Yannis Stavrakas, and Michalis Vazirgiannis. Multivariate Gaussian Document Representation from Word Embeddings for Text Categorization. 15th European Chapter of the Association for Computational Linguistics Conference (EACL 2017), Valencia-Spain, April 3-7, 2017.
Vinayak Mathur, Yannis Stavrakas, and Sanjay Singh. Intelligence Analysis of Tay Twitter Bot. IEEE 2nd International Conference on Contemporary Computing and Informatics (IC3I 2016), Noida-India, 14-17 December, 2016.
Yannis Roussakis, Ioannis Chrysakis, Kostas Stefanidis, Giorgos Flouris and Yannis Stavrakas. A Flexible Framework for Understanding the Dynamics of Evolving RDF Datasets (same as ISWC 2015). The 14th Hellenic Data Management Symposium (HDMS 2016), Athens-Greece, July 28-29, 2016.
Danae Pla Karidi, Yannis Stavrakas, and Yannis Vassiliou. A Personalized Tweet Recommendation Approach Based on Concept Graphs. 13th IEEE International Conference on Ubiquitous Intelligence and Computing (UIC 2016), Toulouse-France, July 18-21, 2016.
Theodora Galani, George Papastefanatos, and Yannis Stavrakas. A Language for Defining and Detecting Interrelated Complex Changes on RDF(S) Knowledge Bases. 20th International Conference on Enterprise Information Systems (ICEIS 2016), Rome-Italy, 25-28 April, 2016.
Yannis Roussakis, Ioannis Chrysakis, Kostas Stefanidis, Giorgos Flouris and Yannis Stavrakas. A Flexible Framework for Understanding the Dynamics of Evolving RDF Datasets. The 14th International Semantic Web Conference (ISWC 2015), October 11-15, 2015. Best student paper award.
Polykarpos Meladianos, Giannis Nikolentzos, Francois Rousseau, Yannis Stavrakas, and Michalis Vazirgiannis. Degeneracy-based Real-Time Sub-Event Detection in Twitter Stream. The 9TH International AAAI Conference on Web and Social Media (ICWSM-15), May 2015.
Theodora Galani, Yannis Stavrakas, George Papastefanatos, and Giorgos Flouris. Supporting Complex Changes in RDF(S) Knowledge Bases. MEPDaW First Diachron Workshop (hosted by ESWC 2015), June 2015.
Papantoniou Katerina, Athanasiadis Marios-Lazaros, Fundulaki Irini, Georgis Christos, Stavrakas Yannis, Troullinos Michalis, and Tsitsanis Anastasios. Leveraging Web 2.0 for Informed Real-Estate Services. 15th International Conference on Knowledge Extraction and Management (EGC 2015), Luxembourg, 27-30 January, 2015.
Marios Meimaris, George Papastefanatos, Christos Pateritsas, Theodora Galani, and Yannis Stavrakas. Towards a Framework for Managing Evolving Information Resources on the Data Web. ESWC 2014 Workshop on Dataset PROFIling & fEderated Search for Linked Data (PROFILES 2014), Crete, Greece, May 2014.
Vassilis Plachouras, Yannis Stavrakas, and Athanasios Andreou. Assessing the coverage of data collection campaigns on Twitter: A case study. International Workshop on Social Media Semantics (SMS 2013, part of OTM 2013), Graz, Austria, September 12, 2013.
Elena Demidova, Nicola Barbieri, Stefan Dietze, Adam Funk, Gerhard Gossen, Diana Maynard, Nikos Papailiou, Vassilis Plachouras, Wim Peters, Thomas Risse, Yannis Stavrakas, and Nina Tahmasebi. Entities, Topics and Events in Community Memories. First International Workshop on Archiving Community Memories (part of iPRES 2013), Lisbon, Portugal, September 6, 2013.
Vassilis Plachouras, Florent Carpentier, Julien Masanes, Thomas Risse, Pierre Senellart, Patrick Siehndel, and Yannis Stavrakas. An Architecture for Selective Web Harvesting: The Use Case of Heritrix. First International Workshop on Archiving Community Memories (part of iPRES 2013), Lisbon, Portugal, September 6, 2013.
Nikolaos Fousteris, Manolis Gergatsoulis, and Yannis Stavrakas. MXML Path-based Storage and Ordered-based Context Manipulation. 24th International Conference on Database and Expert Systems Applications (DEXA 2013), Prague, Czech Republic, August 26-29, 2013. Proceedings, Part II, Lecture Notes in Computer Science, Vol. 8056, pp. 203-212, Springer-Verlag, 2013.
George Papastefanatos, Yannis Stavrakas, and Theodora Galani. Capturing the History and Change Structure of Evolving Data. Fifth International Conference on Advances in Databases, Knowledge, and Data Applications (DBKDA 2013), Seville, Spain, January 2013. Best paper award.
Yannis Stavrakas, and Vassilis Plachouras. A Platform for Supporting Data Analytics on Twitter: Challenges and Objectives. Workshop on Knowledge Extraction and Consolidation from Social Media (KECSM 2012), Boston, USA, November 2012.
Stefan Dietze, Diana Maynard, Elena Demidova, Thomas Risse, Wim Peters, Katerina Doka, and Yannis Stavrakas. Preservation of Social Web Content based on Entity Extraction and Consolidation. International Workshop on Semantic Digital Archives (SDA 2012), Paphos, Cyprus, September 2012.
Thomas Risse, Stefan Dietze, Wim Peters, Katerina Doka, Yannis Stavrakas, and Pierre Senellart. Exploiting the Social and Semantic Web for guided Web Archiving (POSTER). International Conference on Theory and Practice of Digital Libraries (TPDL 2012), Paphos, Cyprus, September 2012.
Vassilis Plachouras, and Yannis Stavrakas. Querying Term Associations and their Temporal Evolution in Social Data. International VLDB Workshop on Online Social Systems (WOSS 2012), Istanbul, Turkey, August 2012.
Yannis Stavrakas, George Papastefanatos, Theodore Dalamagas and Vassilis Christophides. Diachronic Linked Data: Towards Long-Term Preservation of Structured Interrelated Information. International Workshop on Open Data (WOD 2012), Nantes, France, May 2012.
Theodore Dalamagas, Nikos Bikakis, George Papastefanatos, Yannis Stavrakas and Artemis Hatzigeorgiou. Publishing Life Science Data as Linked Open Data: the Case Study of miRBase. International Workshop on Open Data (WOD 2012), Nantes, France, May 2012.
Nikolaos Fousteris, Manolis Gergatsoulis, and Yannis Stavrakas. MXML Storage and the Problem of Manipulation of Context. 1st Workshop on Digital Information Management, Corfu, Greece, March 30-31, 2011.
Yannis Stavrakas, and George Papastefanatos. Using Structured Changes for Elucidating Data Evolution. ICDE Workshop on Managing Data Throughout its Lifecycle (DaLi 2011), Hannover, Germany, April 11, 2011.
Yannis Stavrakas, and George Papastefanatos. Supporting Complex Changes in Evolving Interrelated Web Databanks. Proc. of the 18th International Conference on Cooperative Information Systems (CoopIS 2010), Crete, Greece, October 27-29, 2010.
George Papastefanatos, Yannis Stavrakas, Christos Papatheodorou, Theodore Dalamagas, Dieter Pfoser, and Timos Sellis. Collaborative information spaces: Research directions at IMIS. 2nd ERCIM DIS Workshop on large scale and federated information spaces, Amsterdam, May 20, 2010.
Yannis Stavrakas, Theodore Dalamagas, and Timos Sellis. Evolution of Interrelated Data: Users, Problems, and Systems. 1st ERCIM DIS Workshop on large scale and federated information spaces, Paris, May 27, 2009.
Nikolaos Fousteris, Yannis Stavrakas, and Manolis Gergatsoulis. Multidimensional XPath. Proc. of the 10th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2008), Linz, Austria, November 24-26, 2008.
Nikolaos Fousteris, Manolis Gergatsoulis, and Yannis Stavrakas. Updating Multidimensional XML Documents. Proc. of the 9th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2007), Jakarta, Indonesia, December 3-5, 2007. Best paper award.
Nikolaos Fousteris, Yannis Stavrakas, and Manolis Gergatsoulis. Storing-Updating and Querying Multidimensional XML Documents Using Relational Databases. Proc. of the IADIS International Conference WWW/INTERNET 2007, Vila Real, Portugal, October 5-8, 2007.
Nikolaos Fousteris, Manolis Gergatsoulis, and Yannis Stavrakas. Storing Multidimensional XML Documents in Relational Databases. Proc. of the 18th International Conference on Database and Expert Systems Applications (DEXA 2007), Regensburg, Germany, 3-7 September 2007.
Yannis Roussos, Yannis Stavrakas, and Vassia Pavlaki. Towards a Context-Aware Relational Model. Context Representation and Reasoning Workshop (CRR'05) in conj. with the Fifth International and Interdisciplinary Conference on Modeling and Using Context (CONTEXT'05), Paris, France, July 5-8, 2005.
Yannis Stavrakas, Kostis Pristouris, Antonis Efandis, and Timos Sellis. Implementing a Query Language for Context-dependent Semistructured Data. Proc. of the East-European Conference on Advances in Databases and Information Systems (ADBIS 2004), Budapest, Hungary, September 2004.
Manolis Gergatsoulis, and Yannis Stavrakas. Representing Changes in XML Documents Using Dimensions. XML Database Symposium (XSym 2003) in conj. with VLDB 2003, Berlin, Germany, September 2003.
Antonis Efandis, Kostis Pristouris, and Yannis Stavrakas. A Query Evaluation System for Multidimensional Semistructured Data. Proc. of the 1st Balkan Conference on Informatics (BCI 2003), Thessaloniki, Greece, November 2003.
Yannis Stavrakas, and Manolis Gergatsoulis. Multidimensional Semistructured Data: Representing Context-Dependent Information on the Web. Proc. of the 14th International Conference on Advanced Information Systems Engineering (CAiSE 2002), Toronto, Canada, May 2002.
Yannis Stavrakas, Manolis Gergatsoulis, Christos Doulkeridis, and Vassilis Zafeiris. Accommodating Changes in Semistructured Databases Using Multidimensional OEM. Proc. of the 6th East-European Conference on Advances in Databases and Information Systems (ADBIS 2002), Bratislava, Slovakia, September 2002.
Vassilis Zafeiris, Christos Doulkeridis, Yannis Stavrakas, and Manolis Gergatsoulis. An Infrastructure for Manipulating Multidimensional Semistructured Data. Proc. of the 1st Hellenic Data Management Symposium (HDMS 2002), Athens, Greece, July 2002.
Konstantinos Karageorgos, Constantinos Valakas, Yannis Stavrakas, and Andreas Polyrakis. Designing and Implementing a Wrapper Specification Language for Web Information Sources. Proc. of the 8th Panhellenic Conference on Informatics, Nicosia, Cyprus, 8-10 November 2001.
Manolis Gergatsoulis, Yannis Stavrakas, Dimitris Karteris, Athina Mouzaki, and Dimitris Sterpis. A Web-based System for Handling Multidimensional Information through MXML. Proc. of the 5th East-European Conference on Advances in Databases and Information Systems (ADBIS 2001), Vilnius, Lithuania, September 2001.
Manolis Gergatsoulis, Yannis Stavrakas, and Dimitris Karteris. Incorporating Dimensions to XML and DTD. Proc. of the International Conference on Database and Expert Systems Applications (DEXA 2001), Munich, Germany, September 2001.
Theodoros Mitakos, Manolis Gergatsoulis, Yannis Stavrakas, and Efstathios Ioannidis. Representing Time-Dependent Information in Multidimensional XML. Proc. of the 23rd International Conference on Information Technology Interfaces (ITI 2001), Pula, Croatia, June 19-22, 2001.
Yannis Stavrakas, Manolis Gergatsoulis, and Theodoros Mitakos. Representing Context-dependent Information Using Multidimensional XML. Proc. of the 4th European Conference on Research and Advanced Technology for Digital Libraries (ECDL 2000), Lisbon, Portugal, September 2000.
Yannis Stavrakas, Manolis Gergatsoulis, and Panos Rondogiannis. Multidimensional XML. Proc. of the 3rd International Workshop on Distributed Communities on the Web (DCW 2000), Quebec, Canada, June 2000.
Vagelis Zorbas, Yannis Stavrakas, and Kostas Chatzinas. Specification of a Mechanism for Direct Access to Databases through WWW. Proc. of the 7th Hellenic Conference on Informatics, Ioannina, Greece, August 1999.
Yannis Stavrakas, Nikos Karagiannidis, and Panos Vassiliadis. Direct Database Access through WWW Browsers. Proc. of the Panhellenic Conference on New Information Technology (NIT '98), Athens, Greece, October 1998.
D. Tsirikos, T. Markousis, G. Mouroulis, M. Hatzopoulos, M. Vazirgiannis, and Y. Stavrakas. A Client-Server Design for Interactive Multimedia Documents Based on Java. Proc. of the 5th International Workshop on Interactive Distributed Multimedia Systems and Services (IDMS '98), Oslo, September 1998. Springer-Verlag.
Panos Vassiliadis, and Yannis Stavrakas. Different Perspectives of Metadata for Web-Based Information Systems. In 11th ERCIM Database Research Group Workshop on Metadata for Web Databases, Sankt Augustin, Germany, May 1998.

Other reports

Danae Pla Karidi, Harry Nakos, and Yannis Stavrakas. Twitter usage analysis in Greece - 2017-B. Part of the subscription-based public survey report "TASEIS"-MRB Hellas S.A., Athens, December 2017.
Danae Pla Karidi, Harry Nakos, and Yannis Stavrakas. Twitter usage analysis in Greece - 2017-A. Part of the subscription-based public survey report "TASEIS"-MRB Hellas S.A., Athens, July 2017.
George Papastefanatos, and Yannis Stavrakas. Diachronic Linked Data: Capturing the Evolution of Structured Interrelated Information on the Web. ERCIM News on Open Linked Data, Number 96, page 36, January 2014.