Alkis Simitsis

Biography

Alkis is a researcher in the Information Analytics Lab, focused on enabling near real-time business intelligence with robust, scalable data management, data-intensive analytics, and fusion of structured and unstructured information. He received a Diploma in Electrical and Computer Engineering and Ph.D. degree in Computer Science from the National Technical University of Athens (NTUA), Greece, in 2000 and 2004, respectively. Following that, he worked at IBM's Almaden Research Center and he was a visitor at Infolab of Stanford University.

More information can be found here: url

Research interests

Alkis' current research interests include multi-objective optimization of hybrid analytics flows; real-time business intelligence; massively parallel processing; query processing/optimization; data cleaning; and user-friendly query interfaces focusing on keyword search and NLP techniques.

Publications

Journal Publications

• A. Simitsis, K. Wilkinson, U. Dayal. Hybrid Analytic Flows - the Case for Optimization. In Fundamenta Informaticae (to appear).
• A. Karagiannis, P. Vassiliadis, A. Simitsis. Scheduling Strategies for Efficient ETL Execution. In Elsevier Information Systems (to appear). 
• G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. Metrics for the Prediction of Evolution Impact in ETL Ecosystems: A Case Study. In Springer JoDS, 2012.
• D. Skoutas, D. Sacharidis, A. Simitsis, T.K. Sellis. Ranking and Clustering Web Services Using Multi-Criteria Dominance Relationships. In IEEE TSC, 2010.
• A. Simitsis, D. Skoutas, and M. Castellanos. Representation of Conceptual ETL Designs in Natural Language Using Semantic Web Technology. In Elsevier DKE, 2010.
• D. Skoutas, A. Simitsis, T.K. Sellis. Ontology-driven Conceptual Design of ETL Processes using Graph Transformations. In Springer JoDS, XIII, 2009.
• G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. Policy-regulated Management of ETL Evolution. In Springer JoDS, XIII, 2009. 
• A. Simitsis, P. Vassiliadis. A Method for the Mapping of Conceptual Designs to Logical Blueprints for ETL Processes. In Elsevier DSS, 45(1), 2008.
• A. Simitsis, G. Koutrika, Y. Ioannidis. Precis: From Unstructured Keywords as Queries to Structured Databases as Answers. In VLDB Journal, 17(1), 2008.
• N. Polyzotis, S. Skiadopoulos, P. Vassiliadis, A. Simitsis, N. Frantzell. Meshing Streaming Updates with Persistent Data in an Active Data Warehouse. In IEEE TKDE, 20(7), 2008.

Books and Chapters in Books

• R. Berlanga, O. Romero, A. Simitsis, V. Nebot, T.B. Pedersen, A. Abelló, M.J. Aramburu. Semantic Web Technologies for Business Intelligence. In Business Intelligence Applications and the Web: Models, Systems, and Technologies, 2012. 
• P. Vassiliadis, A. Simitsis. Extraction, Transformation, and Loading. In Springer Encyclopedia of Database Systems, 2009.
• P. Vassiliadis, A. Simitsis. Near Real Time ETL. In Springer Annals of Information Systems, Vol. 3, 2008.

Publications in Refereed Conferences and Workshops

• A. Simitsis, K. Wilkinson, P. Jovanovic. xPAD: A Platform for Analytic Data Flows. In ACM SIGMOD/PODS, 2013.
• C. P. Sayers, A. Simitsis, G. Koutrika, A. G. Gonzalez, D. T. Cantu, M. Hsu. The Farm - where Pig Scripts are bred and raised. In ACM SIGMOD/PODS, 2013.
• A. Simitsis, K. Wilkinson, U. Dayal, M. Hsu. HFMS: Managing the Lifecycle and Complexity of Hybrid Analytic Data Flows. In IEEE ICDE, 2013.
• G. Koutrika, A. Simitsis. Mirror mirror on the wall, which query’s fairest of them all? In CIDR, 2013.
• A. Simitsis, K. Wilkinson, M. Castellanos, U. Dayal. Optimizing Analytic Data Flows for Multiple Execution Engines. In ACM SIGMOD/PODS, 2012. 
• A. Kokkalis, P. Vagenas, A. Zervakis, A. Simitsis, G. Koutrika, Y. E. Ioannidis. Logos: a System for Translating Queries into Narratives. In ACM SIGMOD/PODS, 2012. [best demo award]
• E. Iori, A. Simitsis, T. Palpanas, K. Wilkinson, S. Harizopoulos. CloudAlloc: a Monitoring and Reservation System for Compute Clusters. In ACM SIGMOD/PODS, 2012.
• A. Simitsis, C. Gupta, K. Wilkinson, U. Dayal. Optimizing Flows for Real Time Operations Management. In SSDBM, 2012.
• A. Simitsis, K. Wilkinson. Revisiting ETL Benchmarking: The Case for Hybrid Flows. In TPC-TC, 2012.
• U. Dayal, K. Wilksinson, A. Simitsis, M. Castellanos, L. Paz. Optimization of Analytic Data Flows for Next Generation Business Intelligence Applications. In TPC-TC, 2011.
• A. Karagiannis, P. Vassiliadis, A. Simitsis. Macro-level Scheduling of ETL Workflows. In QDB, 2011.
• K. Wilkinson, A. Simitsis. Designing Integration Flows Using Hypercubes. In EDBT, 2011.
• G. Papastefanatos, P. Vassiliadis, A. Simitsis. Propagating Evolution Events in Data-Centric Software Artifacts. In HotSWUp, 2011.
• A. Simitsis, K. Wilkinson, U. Dayal, M. Castellanos. Optimizing ETL for Fault-Tolerance. In IEEE ICDE, 2010.
• G. Koutrika, A. Simitsis, Y. Ioannidis. Explaining Structured Queries in Natural Language. In IEEE ICDE, 2010.
• G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. HECATAEUS: Regulating Schema Evolution. In IEEE ICDE, 2010. (demonstration paper)
• K. Wilkinson, A. Simitsis, U. Dayal, M. Castellanos. Leveraging Business Process Models for ETL Design. In ER, 2010.
• A. Simitsis, C. Gupta, S. Wang, U. Dayal. Partitioning Real-Time ETL Workflows. In NTII, 2010. 
• U. Dayal, K. Wilkinson, A. Simitsis, M. Castellanos. Business Processes Meet Operational Business Intelligence. In IEEE Data Engineering Bulletin, 32(3), 2009.
• A. Simitsis, K. Wilkinson, M. Castellanos, U. Dayal. QoX-Driven ETL Design: Reducing the Cost of the ETL Consulting Engagements. In ACM SIGMOD/PODS, 2009.
• U. Dayal, M. Castellanos, A. Simitsis, K. Wilkinson. Data Integration Flows for Business Intelligence. In EDBT, 2009.
• M. Castellanos, A. Simitsis, K. Wilkinson, U. Dayal. Automating the Loading of Business Process Data Warehouses. In EDBT, 2009.
• D. Skoutas, D. Sacharidis, A. Simitsis, V. Kantere, T.K. Sellis. Top-k Dominant Web Services Under Multi-Criteria Matching. In EDBT, 2009.
• Y. Ioannidis, A. Simitsis. DBMSs Should Talk Back Too. In CIDR, 2009.
• A. Simitsis, P. Vassiliadis, U. Dayal, A. Karagiannis, V. Tziovara. Benchmarking ETL Workflows. In TPC-TC, 2009.
• P. Vassiliadis, A. Simitsis, E. Baikousi. A Taxonomy of ETL Activities. In ACM DOLAP, 2009.
• G. Papastefanatos, P. Vassiliadis, A. Simitsis, T. Sellis, Y. Vassiliou. Rule-based Management of Schema Changes at ETL Sources. In MEDWa, 2009.
• A. Simitsis, A. Baid, Y. Sismanis, B. Reinwald. Multidimensional Content eXploration. In VLDB, 2008.
• A. Simitsis, G. Koutrika, Y. Alexandrakis, Y. Ioannidis. Synthesizing Structured Text from Logical Database Subsets. In EDBT, 2008.

A full list of Alkis' publications can be found here: url

Professional activities

• EDBT 2014: 17th International Conference on Extending Database Technology (EDBT '14), Athens, Greece, March 24-28, 2014.
• ICDE 2014: 30th IEEE International Conference on Data Engineering (ICDE '14), Chicago, IL, USA, April 7-11, 2014.
• Big Data 2013: 1st IEEE International Conference on Big Data (Big Data '13), Silicon Valley, CA, USA, October 6-9, 2013.
• ICSC 2013: 7th IEEE International Conference on Semantic Computing, Irvine, CA, USA, 16-18 September, 2013.
• DaWaK 13: 15th International Conference on Data Warehousing and Knowledge Discovery, Prague, Czech Republic, August 26-29, 2013
• ICSC 2012: 6th IEEE International Conference on Semantic Computing, Palermo, Italy, 19-21 September, 2012.
• EDBT 2012: 15th International Conference on Extending Database Technology (EDBT '12) (Industrial Track), Berlin, Germany, March 26-30, 2012.
• ICDE 2012: 28th IEEE International Conference on Data Engineering (ICDE '12) (Demo Program), Washington, DC, USA, April 1-5, 2012.
• ER 2011: 30th International Conference on Conceptual Modeling (ER 2011), Brussels, Belgium, 31 October - 3 November, 2011. (industrial track co-chair)
• DOLAP 2011: 14th ACM International Workshop on Data Warehousing and OLAP (DOLAP '11), Glasgow, Scotland, UK, October 28, 2011.
• ICSC 2011: 5th IEEE International Conference on Semantic Computing, Stanford University, Palo Alto, CA, USA, 18-21 September, 2011.
• VLDB 2011: 37th International Conference on Very Large Data Bases (industrial track), The Westin, Seattle, WA, USA, 29 August - 3 September, 2011.
• DaWaK 2011: 13th International Conference on Data Warehousing and Knowledge Discovery, Toulouse, France, 29 August - 2 September, 2011.
• DESWeb 2011: 2nd International Workshop on Data Engineering meets the Semantic Web (DESWeb '11), Hannover, Germany, 11 April, 2011.
• EDBT 2011: 14th International Conference on Extending Database Technology, Uppsala, Sweden, March 22-25, 2011.
• SIGMOD 2010: ACM SIGMOD International Conference on Management of Data (SIGMOD/PODS '10), Indianapolis, USA, 6-11 June, 2010.
• EDBT 2010: 13th International Conference on Extending Database Technology (EDBT '10) (demo track), Lausanne, Switzerland, 22-26 March, 2010.
• ER 2009: 28th International Conference on Conceptual Modeling (ER '08) (demonstration program), Gramado, Brazil, 9-12 November, 2009.
• DOLAP 2009: 12th ACM International Workshop on Data Warehousing and OLAP (DOLAP '09), Hong Kong, China, 6 November, 2009.
• MEDWa 2009: Workshop On Managing Evolution Of Data Warehouses (MEDWa '09) co-located with the ADBIS conference, Riga, Latvia, 7 September, 2009.
• DaWaK 2009: 11th International Conference on Data Warehousing and Knowledge Discovery (DaWaK '09), Linz, Austria, 31 August - 4 September, 2009.
• HDMS 2009: 8th Hellenic Data Management Symposium (HDMS'09), Athens, Greece, 31 August - 1 September, 2009.
• ESWC 2009: 6th European Semantic Web Conference (ESWC '09), Heraklion, Greece, 31 May - 4 June 2009.
• ICDE 2009: 25th IEEE International Conference on Data Engineering (ICDE '09), Shanghai, China, 29 March - 4 April, 2009.
• EDBT 2009: 12th International Conference on Extending Database Technology (EDBT '09) (demo track), Saint-Petersburg, Russia, 23-26 March, 2009.