Kostis Kyzirakos

Starting from September 2013, I am a post-doctoral researcher at the Database Architectures group of Centrum Wiskunde & Informatica (CWI) in Amsterdam. Here is my new homepage.

Contact: National and Kapodistrian University of Athens Dept. of Informatics and Telecommunications Management of Data & Information Knowledge Group Office I1, Panepistimioupolis, Ilissia GR-15784 Athens, Greece Tel: +30.210.727.5159 Fax: +30.210.727.5214 e-mail: kkyzir at di's domain (di's domain is di.uoa.gr) skype : kkyzir

Hi! My name is Kostis Kyzirakos and I am a PhD student at the Department of Informatics, University of Athens and my PhD supervisor is Prof. Manolis Koubarakis. I obtained a Diploma in Engineering from the School of Electrical and Computer Engineering, National and Technical University of Athens and I carried out my Diploma Thesis at the Knowledge and Database Systems Laboratory under the supervision of Prof. Yiannis Vasileiou and Dr. George Papastefanatos.

Publications

Conference papers

• G. Garbis, K. Kyzirakos and M. Koubarakis. Geographica: A Benchmark for Geospatial RDF Stores. In the 12th International Semantic Web Conference (ISWC 2013). October 21-25, 2013. Sydney, Australia. (to appear)
• K. Kyzirakos, M. Karpathiotakis and M. Koubarakis. Strabon: A Semantic Geospatial DBMS. In the 11th International Semantic Web Conference (ISWC 2012). November 11-15, 2012. Boston, USA. [pdf]
• M. Koubarakis, M. Sioutis, K. Kyzirakos, M. Karpathiotakis, C. Nikolaou, S.Vassos, G. Garbis, K. Bereta, M. Datcu, G. Schwarz, O.C. Dumitru, D.E. Molina and K. Molch. Building Virtual Earth Observatories Using Ontologies, Linked Geospatial Data and Knowledge Discovery Algorithms. In the Image Information Mining Conference: Knowledge Discovery from Earth Observation Data (ESA-EUSC-JRC 2012). October 24-26, 2012. Oberpfaffenhofen, Germany. [pdf]
• M. Koubarakis, K. Kyzirakos, M. Karpathiotakis, C. Nikolaou, S. Vassos, G. Garbis, M. Sioutis, K. Bereta, C. Kontoes, I. Papoutsis, T. Herekakis, D. Michail, S. Manegold, M. Kersten, M. Ivanova, H. Pirk, Y. Zhang, M. Datcu, G. Schwarz, O. C. Dumitru, D. E. Molina, K. Molch, U. D. Giammatteo, M. Sagona, S. Perelli, T. Reitz, E. Klien and R. Gregor. Building Remote Sensing Applications Using Scientific Database and Semantic Web Technologies. In the Image Information Mining Conference: Knowledge Discovery from Earth Observation Data (ESA-EUSC-JRC 2012). October 24-26, 2012. Oberpfaffenhofen, Germany. [pdf]
• M. Koubarakis, M. Karpathiotakis, K. Kyzirakos, C. Nikolaou, S. Vassos, G. Garbis, M. Sioutis, K. Bereta, S. Manegold, M. Kersten, M. Ivanova, H. Pirk, Y. Zhang, C. Kontoes, I. Papoutsis, T. Herekakis, D. Mihail, M. Datcu, G. Schwarz, O. Dumitru, D. Molina, K. Molch, U. Giammatteo, M. Sagona, S. Perelli, E. Klien, T. Reitz, and R. Gregor. Building Virtual Earth Observatories using Ontologies and Linked Geospatial Data. In the 6th International Conference on Web Reasoning and Rule Systems (RR 2012). September 10-12, 2012. Vienna, Austria. Short paper. [pdf]
• M. Koubarakis, M. Sioutis, K. Kyzirakos, M. Karpathiotakis, C. Nikolaou, S. Vassos, G. Garbis, K. Bereta, O. C. Dumitru, D. E. Molina, K. Molch, G. Schwarz, and M. Datcu. Building Virtual Earth Observatories using Ontologies, Linked Geospatial Data and Knowledge Discovery Algorithms. In the 11th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE 2012). September 11-12, 2012. Roma, Italy. [pdf]
• M. Koubarakis, M. Karpathiotakis, K. Kyzirakos, C. Nikolaou, and M. Sioutis. Data Models and Query Languages for Linked Geospatial Data. Invited tutorial at the 8th Reasoning Web Summer School 2012 (RW 2012). September 3-8, 2012. Austria, Vienna. In: Eiter, T., Krennwallner, T. (eds.) Reasoning Web. Semantic Technologies for Advanced Query Answering. Lecture Notes in Computer Science, vol. 7487, pp. 290328. Springer. [pdf]
• C. Kontoes, I. Papoutsis, D. Michail, T. Herekakis, M. Koubarakis, K. Kyzirakos, M.Karpathiotakis, C. Nikolaou, M. Sioutis, G. Garbis, S. Vassos, I. Keramitsoglou, M. Kersten, S. Manegold, and H. Pirk. Wildfire monitoring via the integration of remote sensing with innovative information technologies. In EGU General Assembly 2012. April 22-27, 2012. Vienna, Austria. Abstract. [pdf]
• A. J. G. Gray, R. García-Castro, K. Kyzirakos, M. Karpathiotakis, J.-P. Calbimonte, K. Page, J. Sadler, A. Frazer, I. Galpin, A. Fernandes, N. Paton, O. Corcho, M. Koubarakis, D. Roure, K. Martinez and A. Gómez-Pérez. A Semantically Enabled Service Architecture for Mashups over Streaming and Stored Data. In 8th Extended Semantic Web Conference (ESWC 2011). Heraklion, Crete, May 20 - June 2, 2011. [pdf]
• Z. Kaoudi, K. Kyzirakos, and M. Koubarakis. SPARQL Query Optimization on Top of DHTs. In 9th International Semantic Web Conference (ISWC 2010). Shangai, China, November 7-11, 2010. [pdf]
• M. Koubarakis and K. Kyzirakos. Modeling and Querying Metadata in the Semantic Sensor Web: the Model stRDF and the Query Language stSPARQL. In 7th Extended Semantic Web Conference (ESWC 2010). Heraklion, Crete, 30 May - 03 June, 2010. [pdf]

Journal papers

• A.J.G. Gray, J. Sadler, O. Kit, K. Kyzirakos, M. Karpathiotakis, J.-P. Calbimonte, K. Page, R. García-Castro, A. Frazer, I. Galpin, A.A.A. Fernandes,N.W. Paton, O. Corcho, M. Koubarakis, D.D. Roure, K. Martinez, A. Gómez-Pérez. A Semantic Sensor Web for Environmental Decision Support Applications. Sensors. 11, 8855-8887. [pdf]
• Z. Kaoudi, M. Koubarakis, K. Kyzirakos, I. Miliaraki, M. Magiridou and A. Papadakis-Pesaresi. Atlas: Storing, updating and querying RDF(S) data on top of DHTs. Web Semantics: Science, Services and Agents on the World Wide Web Journal of Web Semantics. Vol. 8, Issue 4, pages 271-277, 2010. [link]

Survey papers

• M. Koubarakis, M. Karpathiotakis, K. Kyzirakos, C. Nikolaou, and M. Sioutis. Data Models and Query Languages for Linked Geospatial Data. Invited tutorial at the 8th Reasoning Web Summer School 2012 (RW 2012). September 3-8, 2012. Austria, Vienna. In: Eiter, T., Krennwallner, T. (eds.) Reasoning Web. Semantic Technologies for Advanced Query Answering. Lecture Notes in Computer Science, vol. 7487, pp. 290328. Springer. [pdf]

Workshop papers

• C. Kontoes, I. Keramitsoglou, I. Papoutsis, D. Michail, T. Herekakis, P. Xofis, M. Koubarakis, K. Kyzirakos, M. Karpathiotakis, C. Nikolaou, M. Sioutis, G Garbis, S. Vassos, S. Manegold, M. Kersten, H. Pirk, M. Ivanova. Operational Wildfire Monitoring and Disaster Management Support Using State-of-the-art EO and Information Technologies. In 2nd International Workshop on Earth Observation and Remote Sensing Applications (EORSA 2012). June 8-11, 2012. Shangai, China. [pdf]
• M. Koubarakis, K. Kyzirakos, M. Karpathiotakis, C. Nikolaou, M. Sioutis, S. Vassos, D. Michail, T. Herekakis, C. Kontoes and I. Papoutsis. Challenges for Qualitative Spatial Reasoning in Linked Geospatial Data. In Proceedings of IJCAI 2011 Workshop on Benchmarks and Applications of Spatial Reasoning. Barcelona, Spain, July 17, 2011. [pdf]
• K. Kyzirakos, M. Karpathiotakis and M. Koubarakis. Developing Registries for the Semantic Sensor Web using stRDF and stSPARQL (short paper). 3rd International workshop on Semantic Sensor Networks 2010, in conjunction with ISWC 2010, November 2010, Shanghai, China. [pdf]
• Z. Kaoudi, M. Koubarakis, K. Kyzirakos, M. Magiridou, I. Miliaraki, and A. Papadakis-Pesaresi. Publishing, Discovering and Updating Semantic Grid Resources using DHTs. CoreGRID Workshop on Grid Programming Model, Grid and P2P Systems Architecture, Grid Systems, Tools and Environments. Heraklion, Crete, Greece. June 12-13, 2007. [pdf]
• G. Papastefanatos, K. Kyzirakos, P. Vassiliadis and Y. Vassiliou. Hecataeus: A Framework for Representing SQLConstructs as Graphs. In Proceedings of 10th International Workshop on Exploring Modeling Methods for Systems Analysis and Design - EMMSAD '05 (in conjunction with CAISE'05) - Oporto, Portugal, June 2005. [pdf]

Application and Demo papers

• K. Kyzirakos, K. Bereta, G. Garmpis, C. Nikolaou, P. Smeros, S. Giannakopoulou, K. Dogani and M. Koubarakis. The Spatiotemporal RDF Store Strabon. In the 13th International Symposium on Spatial and Temporal Databases (SSTD 2013), Munich, Germany, August 21-23, 2013. (to appear)
• C. Nikolaou, K. Dogani, K. Kyzirakos and M. Koubarakis. Sextant: Browsing and Mapping the Ocean of Linked Geospatial Data. In the 10th Extended Semantic Web Conferece (ESWC 2013), Montpellier, France, May 26-30, 2013. [ pdf, poster, online demo] Best demo award.
• M. Koubarakis, S. Manegold, C. Kontoes, M. Karpathiotakis, K. Kyzirakos, K. Bereta, G. Garbis, C. Nikolaou, I. Papoutsis, T. Herekakis, M. Ivanova, Y. Zhang, H. Pirk, M. Kersten, K. Dogani, S. Giannakopoulou and P. Smeros. Real-Time Wildfire Monitoring Using Scientific Database and Linked Data Technologies. In the 16th International Conference on Extending Database Technology (EDBT), March 18-22, 2013. Genoaa, Italy. [pdf]
• K. Kyzirakos, M. Karpathiotakis, G. Garbis, C. Nikolaou, K. Bereta, M. Sioutis, I. Papoutsis, T. Herekakis, D. Michail, M. Koubarakis, and C. Kontoes. Real Time Fire Monitoring Using Semantic Web and Linked Data Technologies. In the 11th International Semantic Web Conference (ISWC 2012). November 11-15, 2012. Boston, USA. Demo Paper. [pdf]
• M. Koubarakis, K. Kyzirakos, M. Karpathiotakis, C. Nikolaou, S. Vassos, G. Garbis, M. Sioutis, Konstantina Bereta, D. Michail, C. Kontoes, I. Papoutsis, T. Herekakis, S. Manegold, M. Kersten, M. Ivanova, H. Pirk, Y. Zhang, M. Datcu, G. Schwarz, C. Dumitru, D. E. Molina, K. Molch, U. D. Giammatteo, M. Sagona, S. Perelli, T. Reitz, E. Klien, R. Gregor. TELEIOS: A Database-Powered Virtual Earth Observatory. In the 38th International Conference on Very Large Databases (VLDB 2012). August 27-31, 2012. Istanbul, Turkey. Demo Paper. [pdf]

Challenges - Contests

• K. Kyzirakos, M. Karpathiotakis, G. Garbis, C. Nikolaou, K. Bereta, I. Papoutsis, T. Herekakis, D. Michail, M. Koubarakis and C. Kontoes. Wildfire Monitoring Using Satellite Images, Ontologies and Linked Geospatial Data. Semantic Web Challenge 2012. [pdf]   [live demo] Won the third place!

Technical reports

• G. Garbis, K. Mpereta, M. Karpathiotakis, K. Kyzirakos, B. Nikolaou, M. Sioutis, S. Vassos, I. Miliaraki, K. Papadaki, and Manolis Koubarakis. An implementation of a temporal and spatial extension of RDF and SPARQL on top of MonetDB - phase I. Deliverable D4.1, EU FP7 project TELEIOS.
• M. Koubarakis, K. Kyzirakos, C. Nikolaou, M. Sioutis and S. Vassos. A data model and query language for an extension of RDF with time and space. Deliverable D2.1, EU FP7 project TELEIOS.
• A. Gray, I. Galpin, A. Fernandes, N. Paton, K. Page, J. Sadler, K. Kyzirakos, M. Koubarakis, J. Calbimonte, R. Garcia-Castro, O. Corcho, J. Gabaldon, and J. Aparicio. SemSorGrid4Env Architecture - Phase II. Deliverable D1.3v2, EU FP7 project SemsorGrid4Env.
• A. Gray, I. Galpin, A. Fernandes, N. W. Paton, K. Page, J. Sadler, M. Koubarakis, K. Kyzirakos, J. Calbimonte, O. Corcho, R. Garcia, V. Diaz and I. Lisbeana. SemSorGrid4Env Architecture - Phase I. Deliverable D1.3v1, EU FP7 project SemsorGrid4Env.
• M. Karpathiotakis, K. Kyzirakos, Z. Kaoudi, M. Koubarakis, Josep Rodriguez and Juanjo Aparicio. Evaluation of the registry services. Deliverable D3.4, EU FP7 project SemsorGrid4Env.
• M. Karpathiotakis, K. Kyzirakos, Z. Kaoudi, V. Fisikopoulos, I. Miliaraki, M. Koubarakis, Y. Ioannidis, M. Hatzopoulos and V. Kalogeraki. Implementation and deployment of the registry services. Deliverable D3.3v2, EU FP7 project SemsorGrid4Env.
• K. Kyzirakos, M. Karpathiotakis and M. Koubarakis. Implementation and deployment of the registry services. Deliverable D3.3v1, EU FP7 project SemsorGrid4Env.
• K. Kyzirakos, Z. Kaoudi, M. Karpathiotakis and M. Koubarakis. Distributed data structures and algorithms for a Semantic Sensor Grid registry. Deliverable D3.2, EU FP7 project SemsorGrid4Env.
• K. Kyzirakos, Z. Kaoudi and M. Koubarakis. Data models and languages for registries in SemsorGrid4Env. Deliverable D3.1, EU FP7 project SemsorGrid4Env.
• Implementation of Use Cases. Deliverable D4, Peer-to-Peer Techniques for Semantic Web Services project.
• Implementation and Integration with the DAML-S Virtual Machine. Deliverable D3, Peer-to-Peer Techniques for Semantic Web Services project.
• Semantic Web service discovery using DHTs: Theoretical Analysis, Algorithms and Experimental Evaluation. Deliverable D2, Peer-to-Peer Techniques for Semantic Web Services project.
• Semantic web service discovery and composition in a DHT environment: use cases and architectures. Deliverable D1, Peer-to-Peer Techniques for Semantic Web Services project.
• Z. Kaoudi, K. Kyzirakos, M. Magiridou, I. Miliaraki, A. Papadakis-Pesaresi, E. Liarou, S. Idreos, M. Koubarakis, S. Skiadopoulos, and E. Pitoura. Evaluation of Deployed Ontology and Semantic Grid P2P Services. Deliverable D4.3, EU FP6 project Ontogrid.
• Z. Kaoudi, K. Kyzirakos, M. Magiridou, I. Miliaraki, A. Papadakis-Pesaresi, E. Liarou, S. Idreos, G. Anadiotis, M. Koubarakis, S. Skiadopoulos, and E. Pitoura. Deployment of Ontology Services and Semantic Grid Services on top of Self-organized P2P Networks. Deliverable D4.2v2, EU FP6 project Ontogrid.

Tutorials and Talks

Tutorials

• Manolis Koubarakis, Kostis Kyzirakos and Charalampos Nikolaou. Linked Geospatial Data, 24th IEEE International Conference on Tools with Artificial Intelligence (ICTAI), November 7-9, 2012, Athens, Greece.  [link]  [pdf]
• Manolis Koubarakis, Kostis Kyzirakos and Charalampos Nikolaou. Data Models and Query Languages for Linked Geospatial Data, 8th Reasoning Web 2012 Summer School, September 03 - 08 2012, Vienna, Austria.  [link]  [part I, II, III]
• Manolis Koubarakis, Kostis Kyzirakos and Manos Karpathiotakis. Data models, Query Languages, Implemented Systems and Applications of Linked Geospatial Data, 9th Extended Semantic Web Conference (ESWC), May 27 - 31 2012, Heraclion, Crete, Greece.  [link]  [part I, II, III, IV, V, VI, VI]
• Oscar Corcho, Alasdair J G Gray, Kostis Kyzirakos, Jean-Paul Calbimonte and Kevin Page. Building Semantic Sensor Webs and Applications, 8th Extended Semantic Web Conference (ESWC), May 29 - June 2 2012, Heraclion, Crete, Greece.  [link]  [part I, II, III, IV, V, VI, VII]

Talks

• Building Scalable Linked Data-Powered Virtual Earth Observatories, 2013 Semantic Technology & Business Conference, June 5, San Francisco. [pdf]
• Representing and Querying Geospatial Information in the Semantic Web, IBM Research, March 8, 2013, Dublin, Ireland. [pdf]
• Building Remote Sensing Applications Using Semantic Web Technologies, Disaster 2.0 Masterclass, January 16, 2013, Brussels, Belgium. [pdf]
• A geospatial extension of RDF and an implementation on top of an RDBMS. Presentation of the Management of Data & Information Knowledge Group at Microsoft, June 11, 2011, Athens, Greece. [pdf]
• Linear Constraint Databases for the Semantic Web: The Model stRDF and the Query Language stSPARQL. OGC Technical and Planning Committee Meeting 2011, Geosemantics DWG, March 9, 2011, Bonn, Germany. [link] [pdf]
• The Data Model stRDF and the Query Language stSPARQL. Max Planck Institut Informatik, January 28, 2011, Saarbrücken, Germany. [pdf]
• Modeling and Querying Metadata in the Semantic Sensor Web: the model stRDF and the query language stSPARQL. Dagstuhl-Seminar Semantic Challenges in Sensor Networks, January 24 - 29 2010, Wadern, Germany. [link] [pdf]

Systems

• Strabon: a semantic geospatial system for stRDF/stSPARQL and GeoSPARQL.
      [web site],     [online demo],     [mercurial repository],     [bug reporting],     [maven repository],
      [mailing list for developers],     [mailing list for users]
  
  
• Atlas: a peer-to-peer network for the distributed storage, querying and update of RDF(S) metadata. [link]

Theses

• PhD thesis. Soon!
• Kyzirakos Kostantinos, HECATEUS: A framework for representing SQL constructs as graphs. Diploma thesis, Knowledge and Database Systems Laboratory, School of Electrical and Computer Engineering, National and Technical University of Athens. [link]

Teaching

• 2009-now: Teaching assistant in graduate course Knowledge Technologies.
• 2010: Teaching assistant in graduate course Foundation of Databases

Job Experience

• 09/2010 – now     : Research assistant in EU FP7 project TELEIOS
• 09/2008 – 08/2011: Research assistant in EU FP7 project SemsorGrid4Env
• 10/2007 – 03/2008: Research assistant in project Peer-to-Peer Techniques for Semantic Web Services
• 03/2006 – 09/2007: Research assistant in EU FP6 project Ontogrid
• 09/2005 – 03/2006: Software Engineer, DocuSystems Co in cooperation with the Knowledge and Database Systems Laboratory of National Technical University of Athens.
• 09/2003 – 12/2004: Software Engineer, Attica’s Network of Catchpoles.
• 12/2003 – 02/2004: Software Engineer, Abacom Co.
• 04/2003 – 07/2004: Software Engineer, Attica’s Network of Catchpoles.
• 09/1999 – now      : Software Engineer, State School of Dance.

---

Τρεις ιστορίες για Ζαπατίστας εκεί που δεν υπάρχουν Ζαπατίστας - Πρωτη ιστορια

---