Publications

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Conferences/Workshops

Unsupervised Disaggregation of Low Granularity Resource Consumption Time Series. Pantelis Chronis, Giorgos Giannopoulos, Spiros Athanasiou, and Spiros Skiadopoulos. The 22nd Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2018), 2018 Full text
Open Issues and Challenges on Time Series Forecasting for Water Consumption. Pantelis Chronis, Giorgos Giannopoulos, Spiros Athanasiou. EDBT/ICDT Workshops 2016, 2016 Full text
Learning to Classify Spatiotextual Entities in Maps. Giorgos Giannopoulos, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. Extending Semantic Web Conference 2016 (ESWC 2016), 2016 Full text
FAGI-gis: A Tool for Fusing Geospatial RDF Data. Giorgos Giannopoulos, Nick Vitsas, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. The 12th Extended Semantic Web Conference, Demo Track, 2015, 2015 Full text
OSMRec tool for automatic recommendation of categories on spatial entities in OpenStreetMap. Giorgos Giannopoulos, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. 9th ACM Conference on Recommender Systems, Demo and Posters Track, 2015 (RecSys 2015), 2015 Full text
Automatic Recommendations of Categories for Geospatial Entities. Giorgos Giannopoulos, Nikos Karagiannakis, Dimitrios Skoutas, Spiros Athanasiou. ACM RecSys Workshop on Location-Aware Recommendations (LocalRec 2015), 2015 Full text
Diversifying Microblog Posts. Marios Koniaris, Giorgos Giannopoulos, Timos Sellis, Yiannis Vasileiou. The 15th International Conference on Web Information Systems Engineering, 2014, 2014 Full text
The GeoKnow Generator: Managing Geospatial Data in the Linked Data Web. Jon Jay Le Grange, Jens Lehmann, Spiros Athanasiou, Alejandra Garcia Rojas, Giorgos Giannopoulos, Daniel Hladky, Robert Isele, Axel-Cyrille Ngonga Ngomo, Mohamed Sherif, Claus Stadler. Linking Geospatial Data Workshop, 2014, 2014 Full text
FAGI-tr: A tool for aligning geospatial RDF vocabularies. Giorgos Giannopoulos, Thomas Maroulis, Dimitrios Skoutas, Nikos Karagiannakis, Spiros Athanasiou. The 11th Extended Semantic Web Conference, Demo Track, 2014 (ESWC 2014), 2014 Full text
TripleGeo: an ETL Tool for Transforming Geospatial Data into RDF Triples. Kostas Patroumpas, Michalis Alexakis, Giorgos Giannopoulos, Spiros Athanasiou. EDBT/ICDT Workshops 2014: 275-278, 2014 Full text
FAGI: A framework for fusing geospatial RDF data. Giorgos Giannopoulos, Dimitrios Skoutas, Thomas Maroulis, Nikos Karagiannakis, Spiros Athanasiou. The 13th International Conference on Ontologies, DataBases, and Applications of Semantics, 2014 (ODBASE 2014), 2014 Full text
Towards GeoSpatial Semantic Data Management: Strengths, Weaknesses, and Challenges Ahead. Kostas Patroumpas, Giorgos Giannopoulos, Spiros Athanasiou. ACM SIGSPATIAL 2014, 2014 Full text
Personalizing keyword search on RDF data. Giorgos Giannopoulos, Evmorfia Biliri and Timos Sellis. TPDL 2013: 272-278, 2013 Full text
RDivF: Diversifying Keyword Search on RDF Graphs. • Nikos Bikakis, Giorgos Giannopoulos, John Liagouris, Dimitrios Skoutas, Theodore Dalamagas, and Timos Sellis. 17th International Conference on Theory and Practice of Digital Libraries (TPDL '13), 2013 Full text
Diversifying User Comments on News Articles. Giorgos Giannopoulos, Ingmar Weber, Alejandro Jaimes and Timos Sellis. WISE 2012: 100-113, 2012 Full text
Learning to rank user intent. Giorgos Giannopoulos, Ulf Brefeld, Theodore Dalamagas, and Timos Sellis. Proceedings of the 20th ACM International Conference on Information and Knowledge Management (CIKM’11), 2011 Full text
Search behavior-driven training for result re-ranking. Giorgos Giannopoulos, Theodore Dalamagas, and Timos Sellis. Proceedings of the International Conference on Theory and Practice of Digital Libraries (TPDL’11), 2011 Full text
GoNTogle: a Tool for Semantic Annotation and Search. Giorgos Giannopoulos, Nikos Bikakis, Theodore Dalamagas, Timos Sellis. ESWC 2010 (demo paper), 2010
Integrating Keywords and Semantics on Document Annotation and Search. Nikos Bikakis, Giorgos Giannopoulos, Theodore Dalamagas, Timos Sellis. ODBASE 2010, 2010
Collaborative Ranking Function Training for Web Search Personalization. Giorgos Giannopoulos, Theodore Dalamagas and Timos Sellis. PersDB 2009 : 13 - 18, 2009 Full text
Boosting the ranking function learning process using clustering. Giorgos Giannopoulos, Theodore Dalamagas, Magdalini Eirinaki, Timos Sellis. WIDM 2008: 125-132, 2008 Full text

Journals

Algorithms and criteria for diversification of news article comments. Giorgos Giannopoulos, Marios Koniaris, Ingmar Weber, Alejandro Jaimes, Timos K. Sellis. Journal of Intelligent Information Systems, 2015 Full text
GeoKnow: Making the Web an Exploratory Place for Geospatial Knowledge. Spiros Athanasiou, Daniel Hladky, Giorgos Giannopoulos, Alejandra Garcia Rojas and Jens Lehmann. Ercim news 2014, 2014(96), 2014 Full text
Accurate microRNA target prediction correlates with protein repression levels. Manolis Maragkakis, Panagiotis Alexiou, Giorgio L Papadopoulos, Martin Reczko, Theodore Dalamagas, George Giannopoulos, George Goumas, Evangelos Koukis, Kornilios Kourtis, Victor A Simossis, Praveen Sethupathy, Thanasis Vergoulis, Nectarios Koziris, . BMC Bioinformatics, 10, 2009 Full text
DIANA-microT web server: elucidating microRNA functions through target prediction. Maragkakis M, Reczko M, Simossis VA, Alexiou P, Papadopoulos GL, Dalamagas T, Giannopoulos G, Goumas G, Koukis E, Kourtis K, Vergoulis T, Koziris N, Sellis T, Tsanakas P, Hatzigeorgiou AG. Nucleic Acids Research (NAR) volume 37, 2009 Full text

Technical Reports

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PhD Theses

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Diploma Theses

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Books

Managing Geospatial Linked Data in the GeoKnow Project. Jens Lehmann, Spiros Athanasiou, Andreas Both, Alejandra Garcia Rojas, Giorgos Giannopoulos, Daniel Hladky, Jon Jay Le Grange, Axel-Cyrille Ngonga-Ngomo, Mohamed Ahmed Sherif, Claus Stadler, Matthias Wauer, Patrick Westphal. The Semantic Web in Earth and Space Science. Current Status and Future Directions, Vol. 20 of Studies on the Semantic Web. IOS Press., 2015 Full text