A. Kontaxakis, D. Sacharidis, A. Simitsis, A. Abello, S. Nadal. Hyppo: Efficient Discovery and Execution of Data Science Pipelines in Collaborative Environments. In EDBT, 2025 [url]
A. Karvelas, Y. Foufoulas, A. Simitsis, Y. Ioannidis. Investigating Learning Join Order Optimization Strategies for Rule-based Data Engines. In Inf. Syst. Front., 2024 [url, pdf]
M. N. L. Carvalho, A. Simitsis, A. Queralt, O. Romero. Workload Placement on Heterogeneous CPU-GPU Systems. In PVLDB, 2024 [pdf, slides]
A. Kontaxakis, D. Sacharidis, A. Simitsis, A. Abello, S. Nadal. HYPPO: Using Equivalences to Optimize Pipelines in Exploratory Machine Learning. In ICDE, 2024 [pdf]
K. Chasialis, T. Palaiologou, Y. Foufoulas, A. Simitsis, Y. Ioannidis. QFusor: A UDF Optimizer Plugin for SQL Databases. In ICDE, 2024 [pdf] (Best IEEE ICDE Demo Award)
M. N. L. Carvalho, A. Queralt, O. Romero, A. Simitsis, C. Tatu, R. M. Badia. Performance Analysis of Distributed GPU-Accelerated Task-Based Workflows. In EDBT, 2024 [pdf]
K. Filippopolitis, Y. Foufoulas, M. Garofalakis, A. Glenis, Y. Ioannidis, T. Karabatsis, M.-O. Katsouli, E. Maili, A. Papageorgiou-Mariglis, G. Papanikos, G. Pikramenos, J. Sakellariou, A. Simitsis, P. Ducouret, P. Ryvlin, M.-G. Spuhler. MIP: Advanced Data Processing and Analytics for Science and Medicine. In EDBT, 2024 [pdf] (Best EDBT Demo Award)
D. Lunghi, A. Simitsis, G. Bontempi. Assessing Adversarial Attacks in Real-World Fraud Detection. In IEEE ICWS, 2024 [url]
I. Taha, M. Lissandrini, A. Simitsis, Y. Ioannidis. A Study on Efficient Indexing for Table Search in Data Lakes. In IEEE ICSC, 2024 [pdf, url]
Y. Foufoulas, A. Simitsis. Efficient Execution of User-Defined Functions in SQL Queries. In PVLDB, 2023 [pdf, slides]
D. Lunghi, A. Simitsis, O. Caelen, G. Bontempi. Adversarial Learning in Real-World Fraud Detection: Challenges and Perspectives. In Data Economy, 2023 [pdf, arXiv]
Y. Foufoulas, A. Simitsis. User-Defined Functions in Modern Data Engines. In ICDE, 2023 [pdf, slides]
A. Simitsis, S. Skiadopoulos, P. Vassiliadis. The History, Present, and Future of ETL Technology. In DOLAP, 2023 [pdf] (Test-of-Time invited talk)
A. Karvelas, Y. Foufoulas, A. Simitsis, Y. Ioannidis. Toulouse: Learning Join Order Optimization Policies for Rule-based Data Engines. In DataPlat, 2023 [pdf]
Y. Foufoulas, A. Simitsis, L. Stamatogiannakis, Y. Ioannidis. YeSQL: "You extend SQL" with Rich and Highly Performant User-Defined Functions in Relational Databases. In PVLDB, 2022 [pdf, poster]
Y. Foufoulas, A. Simitsis, Y. Ioannidis. YeSQL: Rich User-Defined Functions without the Overhead. In PVLDB, 2022 [pdf]
D. Tsesmelis, A. Simitsis. Database Optimizers in the Era of Learning. In ICDE, 2022 [pdf, slides]
G. Stamatakis, A. Kontaxakis, A. Simitsis, N. Giatrakos, A. Deligiannakis. SheerMP: Optimized Streaming Analytics-as-a-Service over Multi-site and Multi-platform Settings. In EDBT, 2022 [pdf]
A. Deligiannakis, N. Giatrakos, Y. Kotidis, V. Samoladas, A. Simitsis. Extreme-Scale Interactive Cross-Platform Streaming Analytics - The INFORE Approach. In SEA-Data, 2021 [pdf]
N.Giatrakos, D.Arnu, T.Bitsakis, A.Deligiannakis, M.N. Garofalakis, R.Klinkenberg, A.Konidaris, A.Kontaxakis, Y.Kotidis, V.Samoladas, A.Simitsis, G.Stamatakis, F.Temme, M.Torok, E.Yaqub, A.Montagud, M.Ponce de Leon, H.Arndt, S.Burkard. INforE: Interactive Cross-platform Analytics for Everyone. In CIKM, 2020 [url, pdf] (Best CIKM Demo Award)
A. Arvanitis, S. Babu, E. Chu, A. Popescu, A. Simitsis, K. Wilkinson. Automated Performance Management for the Big Data Stack. In CIDR, 2019 [pdf]
V. Giannakouris, A. Fernandez, A. Simitsis, S. Babu. Cost-Effective, Workload-Adaptive Migration of Big Data Applications to the Cloud. In SIGMOD, 2019 [url, pdf]
G. Kougka, A. Gounaris, A. Simitsis. The many faces of data-centric workflow optimization: a survey. In Int. J. Data Sci. Anal., 2018 [url]
A. Cuzzocrea, A. Simitsis, I-Y. Song. Big Data Management: New Frontiers, New Paradigms.. Inf. Syst. 2017 [url]
G. Koutrika, A. Simitsis. GnosisMiner: Reading Order Recommendations over Document Collections. In EDBT, 2017 [url, pdf]
H. Kimura, A. Simitsis, K. Wilkinson. Janus: Transactional Processing of Navigational and Analytics Graph Queries on Many-core Servers. In CIDR, 2017 [pdf]
P. Jovanovic, O. Romero, A. Simitsis, A. Abelló. Incremental Consolidation of Data-Intensive Multi-Flows. In IEEE TKDE, 2016 [url]
M. Gawade, M. L. Kersten, A. Simitsis. Multi-core column-store parallelization under concurrent workload. In DaMoN, 2016 [url]
M. Das, A. Simitsis, K. Wilkinson. A hybrid solution for mixed workloads on dynamic graphs. In GRADES, 2016 [url, pdf]
A. Abello, O. Romero, T. Pedersen, R. Berlanga Llavori, V. Nebot, M. Aramburu, A. Simitsis. Using Semantic Web Technologies for Exploratory OLAP: A Survey. In IEEE TKDE, 2015 [url]
P. Jovanovic, O. Romero, A. Simitsis, A. Abello, H. Candon, S. Nadal. Quarry: Digging Up the Gems of Your Data Treasury. In EDBT, 2015 [url, pdf]
I.-Y. Song, A. Simitsis, A. Cuzzocrea. Proceedings of the 17th International Workshop on Data Warehousing and OLAP (DOLAP). 2014 [url] (proceedings)
P. Jovanovic, O. Romero, A. Simitsis, A. Abelló, D. Mayorova. A Requirement-Driven Approach to the Design and Evolution of Data Warehouses. In Inf. Syst., 2014 [url, pdf]
P. Jovanovic, A. Simitsis, K. Wilkinson. Engine Independence for Logical Analytic Flows. In ICDE, 2014 [url, pdf]
P. Jovanovic, A. Simitsis, K. Wilkinson. BabbleFlow - A Translator for Analytic Data Flow Programs. In SIGMOD, 2014 [url, pdf]
A. Simitsis, K. Wilkinson, J. Blais, J. Walsh. VQA: Vertica Query Analyzer. In SIGMOD, 2014 [url, url2, pdf] (Best SIGMOD Demo Award)
A. Simitsis, K. Wilkinson, P. Jovanovic. xPAD: A Platform for Analytic Data Flows. In SIGMOD, 2013 [url, pdf]
A. Simitsis, K. Wilkinson, U. Dayal. Hybrid Analytic Flows - the Case for Optimization. In Fundam. Inform., 2013 [url]
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 SIGMOD, 2013 [url, pdf]
A. Simitsis, K. Wilkinson, U. Dayal, M. Hsu. HFMS: Managing the Lifecycle and Complexity of Hybrid Analytic Data Flows. In ICDE, 2013 [url, pdf]
G. Koutrika, A. Simitsis. Mirror mirror on the wall, which query’s fairest of them all?. In CIDR, 2013 [pdf]
A. Karagiannis, P. Vassiliadis, A. Simitsis. Scheduling Strategies for Efficient ETL Execution. In Inf. Syst., 2013 [url]
P. Jovanovic, O. Romero, A. Simitsis, A. Abelló. ORE: An Iterative Approach to the Design and Evolution of Multi-Dimensional Schemas. In DOLAP, 2012 [url]
P. Jovanovic, O. Romero, A. Simitsis, A. Abelló. Requirement-driven Creation and Deployment of Multidimensional and ETL Designs. In ER, 2012 [url]
P. Jovanovic, O. Romero, A. Simitsis, A. Abelló. Requirement-driven ETL Design. In DaWaK, 2012 [url]
A. Simitsis, C. Gupta, K. Wilkinson, U. Dayal. Optimizing Flows for Real Time Operations Management. In SSDBM, 2012 [url]
A. Simitsis, K. Wilkinson, M. Castellanos, U. Dayal. Optimizing Analytic Data Flows for Multiple Execution Engines. In SIGMOD, 2012 [url, pdf]
A. Kokkalis, P. Vagenas, A. Zervakis, A. Simitsis, G. Koutrika, Y. E. Ioannidis. Logos: A System for Translating Queries into Narratives. In SIGMOD, 2012 [url, pdf] (Best SIGMOD Demo Award)
E. Iori, A. Simitsis, T. Palpanas, K. Wilkinson, S. Harizopoulos. CloudAlloc: A Monitoring and Reservation System for Compute Clusters. In SIGMOD, 2012 [url, pdf]
G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. Metrics for the Prediction of Evolution Impact in ETL Ecosystems: A Case Study. In JoDS, 2012 [url]
A. Simitsis, H. Van Mingroot. Preface to the Industrial Track. 2011 [url]
O. De Troyer, C. B. Medeiros, R. Billen, P. Hallot, A. Simitsis, H. Van Mingroot. Advances in Conceptual Modeling: Recent Developments and New Directions. ISBN 978-3-642-24573-2, Lecture Notes in Computer Science 6999, Springer, 2011. [url]
U. Dayal, K. Wilkinson, A. Simitsis, M. Castellanos, L. Paz. Optimization of Analytic Data Flows for Next Generation Business Intelligence Applications. In TPC-TC, 2011 [url]
A. Karagiannis, P. Vassiliadis, A. Simitsis. Macro-level Scheduling of ETL Workflows. In QDB, 2011 [pdf]
O. Romero, A. Simitsis, A. Abelló. GEM: Requirement-driven Generation of ETL and Multidimensional Conceptual Designs. In DaWaK, 2011 [url]
K. Wilkinson, A. Simitsis. Designing Integration Flows Using Hypercubes. In EDBT, 2011 [url, pdf]
G. Papastefanatos, P. Vassiliadis, A. Simitsis. Propagating Evolution Events in Data-Centric Software Artifacts. In HotSWUp, 2011 [url]
A. Simitsis, D. Skoutas, and M. Castellanos. Representation of Conceptual ETL Designs in Natural Language Using Semantic Web Technology. In DKE, 2010 [url]
K. Wilkinson, A. Simitsis, U. Dayal, M. Castellanos. Leveraging Business Process Models for ETL Design. In ER, 2010 [pdf]
G. Koutrika, A. Simitsis, Y. Ioannidis. Explaining Structured Queries in Natural Language. In HDMS, 2010 (informal proceedings - disclaimer)
A. Simitsis, K. Wilkinson, U. Dayal, M. Castellanos. Optimizing ETL Workflows for Fault-Tolerance. In ICDE, 2010 [pdf]
G. Koutrika, A. Simitsis, Y. Ioannidis. Explaining Structured Queries in Natural Language. In ICDE, 2010 [pdf]
G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. HECATAEUS: Regulating Schema Evolution. In ICDE, 2010 [pdf]
A. Simitsis, C. Gupta, S. Wang, U. Dayal. Partitioning Real-Time ETL Workflows. In NTII, 2010 [pdf]
D. Skoutas, D. Sacharidis, A. Simitsis, T.K. Sellis. Ranking and Clustering Web Services Using Multi-Criteria Dominance Relationships. In IEEE TSC, 2010 [url]
D. Skoutas, A. Simitsis, T.K. Sellis. Ontology-driven Conceptual Design of ETL Processes using Graph Transformations. In JoDS, 2009 [local pdf]
G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. Policy-regulated Management of ETL Evolution. In JoDS, 2009 [local pdf]
U. Dayal, K. Wilkinson, A. Simitsis, M. Castellanos. Business Processes Meet Operational Business Intelligence. In IEEE D.Eng. Bull., 2009 [pdf]
P. Vassiliadis, A. Simitsis, E. Baikousi. A Taxonomy of ETL Activities. In DOLAP, 2009 [url, pdf]
G. Papastefanatos, P. Vassiliadis, A. Simitsis, T. Sellis, Y. Vassiliou. Rule-based Management of Schema Changes at ETL Sources. In MEDWa, 2009 [pdf]
A. Simitsis, K. Wilkinson, M. Castellanos, U. Dayal. QoX-Driven ETL Design: Reducing the Cost of the ETL Consulting Engagements. In HDMS, 2009 (informal proceedings - disclaimer)
D. Skoutas, D. Sacharidis, A. Simitsis, V. Kantere, T.K. Sellis. Top-k Dominant Web Services Under Multi-Criteria Matching. In HDMS, 2009 (informal proceedings - disclaimer)
A. Simitsis, P. Vassiliadis, U. Dayal, A. Karagiannis, V. Tziovara. Benchmarking ETL Workflows. In TPC-TC, 2009 [url, pdf]
A. Simitsis, K. Wilkinson, M. Castellanos, U. Dayal. QoX-Driven ETL Design: Reducing the Cost of the ETL Consulting Engagements. In SIGMOD, 2009 [url, pdf]
U. Dayal, M. Castellanos, A. Simitsis, K. Wilkinson. Data Integration Flows for Business Intelligence. In EDBT, 2009 [pdf]
M. Castellanos, A. Simitsis, K. Wilkinson, U. Dayal. Automating the Loading of Business Process Data Warehouses. In EDBT, 2009 [pdf]
D. Skoutas, D. Sacharidis, A. Simitsis, V. Kantere, T.K. Sellis. Top-k Dominant Web Services Under Multi-Criteria Matching. In EDBT, 2009 [pdf]
Y. Ioannidis, A. Simitsis. DBMSs Should Talk Back Too. In CIDR, 2009 [pdf]
N. Polyzotis, S. Skiadopoulos, P. Vassiliadis, A. Simitsis, N. Frantzell. Meshing Streaming Updates with Persistent Data in an Active Data Warehouse. In IEEE TKDE, 2008 [url]
D. Skoutas, A. Simitsis, T. Sellis. Discovery and Selection of Services on the Semantic Web. In ERCIM News, 2008 [url]
A. Simitsis, P. Vassiliadis. A Method for the Mapping of Conceptual Designs to Logical Blueprints for ETL Processes. In DSS, 2008 [url]
A. Simitsis, G. Koutrika, Y. Ioannidis. Précis: From Unstructured Keywords as Queries to Structured Databases as Answers. In VLDB Journal, 2008 [url, pdf]
A. Simitsis, D. Skoutas, M. Castellanos. Natural Language Reporting for ETL Processes. In DOLAP, 2008 [url]
G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. Design Metrics for Data Warehouse Evolution. In ER, 2008 [url]
A. Simitsis, A. Baid, Y. Sismanis, B. Reinwald. Multidimensional Content eXploration. In VLDB, 2008 [pdf, slides]
A. Baid, A. Balmin, H. Hwang, E. Nijkamp, J. Rao, B. Reinwald, A. Simitsis, Y.Sismanis, F. van Ham. DBPubs: Multidimensional Exploration of Database Publications. In VLDB, 2008 [pdf]
D. Skoutas, D. Sacharidis, A. Simitsis, T. Sellis. Serving the Sky: Discovering and Selecting Semantic Web Services through Dynamic Skyline Queries. In ICSC, 2008 [url]
A. Simitsis, G. Koutrika, Y. Alexandrakis, Y. Ioannidis. Synthesizing Structured Text from Logical Database Subsets. In HDMS, 2008 (informal proceedings - disclaimer)
G. Papastefanatos, P. Vassiliadis, A. Simitsis, K. Aggistalis, F. Pechlivani, Y. Vassiliou. Language Extensions for the Automation of Database Schema Evolution. In ICEIS, 2008
D. Skoutas, V. Kantere, A. Simitsis, T. Sellis. Ontology-based Data Sharing in P2P Databases. In SWDB-ODBIS, 2008 [url]
A. Simitsis, G. Koutrika, Y. Alexandrakis, Y. Ioannidis. Synthesizing Structured Text from Logical Database Subsets. In EDBT, 2008 [url, pdf]
V. Tziovara, P. Vassiliadis, A. Simitsis. Deciding the Physical Implementation of ETL Workflows. In DOLAP, 2007 [url]
T. K. Sellis, A. Simitsis. ETL Workflows: From Formal Specification to Optimization. In ADBIS, 2007 [url]
P. Vassiliadis, A. Karagiannis, V. Tziovara, A. Simitsis. Towards a Benchmark for ETL Workflows. In QDB, 2007 [pdf]
D. Skoutas, V. Kantere, A. Simitsis, T. K. Sellis. A Semantic Similarity Measure for Data Sharing in P2P Databases. In SWDB-ODBIS, 2007
G. Papastefanatos, P. Vassiliadis, A. Simitsis, Y. Vassiliou. What-if Analysis for Data Warehouse Evolution. In DaWaK, 2007 [url]
D. Skoutas, A. Simitsis, T. K. Sellis. A Ranking Mechanism for Semantic Web Service Discovery. In SWSP, 2007 [url]
N. Polyzotis, S. Skiadopoulos, P. Vassiliadis, A. Simitsis, N.-E. Frantzell. Supporting Streaming Updates in an Active Data Warehouse. In HDMS, 2007 (informal proceedings - disclaimer)
D. Skoutas, A. Simitsis. Flexible and Customizable NL Representation of Requirements for ETL processes. In NLDB, 2007 [url]
N. Polyzotis, S. Skiadopoulos, P. Vassiliadis, A. Simitsis, N.-E. Frantzell. Supporting Streaming Updates in an Active Data Warehouse. In ICDE, 2007 [url, pdf]
A. Simitsis, G. Koutrika, Y. Ioannidis. Generalized Précis Queries for Logical Database Subset Creation. In ICDE, 2007 [url]
T. K. Sellis, D. Skoutas, A. Simitsis, P. Vassiliadis. Data Provenance in ETL Scenarios. In PrOPr, 2007 [url, ppt]
D. Skoutas, A. Simitsis. Ontology-based Conceptual Design of ETL Processes for both Structured and Semi-structured Data. In IJSWIS, 2007 [url]
M. Belsis, A. Simitsis, S. Gritzalis. Workflow Based Security Incident Management. In PCI, 2005 [url]
A. Simitsis. Mapping Conceptual to Logical Models for ETL Processes. In DOLAP, 2005 [url]
P. Vassiliadis, A. Simitsis, M. Terrovitis, S. Skiadopoulos. Blueprints and Measures for ETL Workflows. In ER, 2005 [url]
A. Simitsis, P. Vassiliadis, T. K. Sellis. Logical Optimization of ETL Workflows. In HDMS, 2005 (informal proceedings - disclaimer)
A. Simitsis, P. Vassiliadis, M. Terrovitis, S. Skiadopoulos. Graph-Based Modeling of ETL Activities with Multi-Level Transformations and Updates. In DaWaK, 2005 [url]
A. Simitsis, P. Vassiliadis, T. K. Sellis. Optimizing ETL Processes in Data Warehouse Environments. In ICDE, 2005 [url, pdf]
A. Simitsis, P. Vassiliadis, T. K. Sellis. State-Space Optimization of ETL Workflows. In IEEE TKDE, 2005 [url]
P. Vassiliadis, A. Simitsis, P. Georgantas, M. Terrovitis, S. Skiadopoulos. A Generic and Customizable Framework for the Design of ETL Scenarios. In Inf. Syst., 2005 [url]
A. Simitsis. ETL Processes in Data Warehouse Enviroments. In HDMS, 2004 (informal proceedings - disclaimer)
A. Simitsis, P. Vassiliadis, T. K. Sellis. Modeling ETL Processes in Conceptual Level. In HDMS, 2004 (informal proceedings - disclaimer)
A. Simitsis. Modeling and Managing ETL Processes. In VLDB, 2003 [url]
A. Simitsis, P. Vassiliadis, S. Skiadopoulos, T. K. Sellis. Modeling of ETL Processes Using Graphs. In HDMS, 2003 (informal proceedings - disclaimer)
A. Simitsis, P. Vassiliadis. A Methodology for the Conceptual Modeling of ETL Processes. In DSE, 2003 [url]
P. Vassiliadis, A. Simitsis, P. Georgantas, M. Terrovitis. A Framework for the Design of ETL Scenarios. In CAiSE, 2003 [url]
P. Vassiliadis, A. Simitsis, S. Skiadopoulos. Conceptual Modeling for ETL Processes. In DOLAP, 2002 [url]
P. Vassiliadis, A. Simitsis, S. Skiadopoulos. Modeling ETL Activities as Graphs. In DMDW, 2002 [url]
P. Vassiliadis, A. Simitsis, S. Skiadopoulos. On the Logical Modeling of ETL Processes. In CAiSE, 2002 [url]
D. Theodoratos, T. Dalamagas, A. Simitsis, M. Stavropoulos. A Randomized Approach for the Incremental Design of an Evolving Data Warehouse. In ER, 2001 [url]
G. Kougka, A. Gounaris, A. Simitsis. The Many Faces of Data-centric Workflow Optimization: A Survey. CoRR: 1701.07723 [url]
A. Simitsis, K. Wilkinson, O. Poppe. Fast Analytics in Real-time Operations Management. Hewlett Packard Labs Technical Report: HPE-2016-93, 2016. [url, pdf]
A. Simitsis, K. Wilkinson. Vertex: A Hybrid Database System for Mixed Workloads. Hewlett Packard Labs Technical Report: HPE-2016-91, 2016. [url, pdf]
A. Simitsis, K. Wilkinson. The Specification for xLM: An Encoding for Analytic Flows. Hewlett Packard Labs Technical Report: HPE-2016-90, 2016. [url, pdf]
A. Kalinin, A. Simitsis, K. Wilkinson, M. Das. VGL: Enabling Graph Computation over Enterprise Data. Hewlett Packard Labs Technical Report: HPE-2016-55, 2016. [url, pdf]
C. Sayers, H. Laffitte, P. Reddy, K. Ozonat, M. Oguz Sayal, A. Simitsis, S. Singhal, G. Koutrika, M. Das, A.Aji, H.A. Bosamiya, M. Riss, Marcelo; K. Wilkinson, J. Clemilson de O. Lúcio, A. Gomes Soares Cantal, C. Rosemberg Maia de Carvalho. CLoud Application Services Platform (CLASP): User Guide, Introduction, and Operation. HP Labs Technical Report: HPL-2015-76, 2015. [url, pdf]
T. Kelly, H. Kuno, M.D. Pickett, H. Boehm, A. Davis, W. Golab, G. Graefe, S. Harizopoulos, P. Joisha, A. Karp, N. Muralimanohar, F. Perner, G. Medeiros-Ribeiro, G. Seroussi, A. Simitsis, R. Tarjan, R.S. Williams. Sidestep: Co-Designed Shiftable Memory & Software. HP Labs Technical Report: HPL-2012-235, 2012. [url, pdf]