A Randomized Approach for the Incremental Design of an Evolving Data Warehouse. - Dimitri Theodoratos; Theodore Dalamagas 001; Alkis Simitsis; Manos Stavropoulos (ER, 2001)

On the Logical Modeling of ETL Processes. - Panos Vassiliadis; Alkis Simitsis; Spiros Skiadopoulos (CAiSE, 2002)

Modeling ETL activities as graphs. - Panos Vassiliadis; Alkis Simitsis; Spiros Skiadopoulos (DMDW, 2002)

Conceptual modeling for ETL processes. - Panos Vassiliadis; Alkis Simitsis; Spiros Skiadopoulos (DOLAP, 2002)

A Methodology for the Conceptual Modeling of ETL Processes. - Alkis Simitsis; Panos Vassiliadis (CAiSE Workshops, 2003)

A Framework for the Design of ETL Scenarios. - Panos Vassiliadis; Alkis Simitsis; Panos Georgantas; Manolis Terrovitis (CAiSE, 2003)

Modeling and managing ETL processes. - Alkis Simitsis (VLDB PhD Workshop, 2003)

Extraction-Transformation-Loading Processes. - Alkis Simitsis; Panos Vassiliadis; Timos K. Sellis (Encyclopedia of Database Technologies and Applications, 2005)

Graph-Based Modeling of ETL Activities with Multi-level Transformations and Updates. - Alkis Simitsis; Panos Vassiliadis; Manolis Terrovitis; Spiros Skiadopoulos (DaWaK, 2005)

Mapping conceptual to logical models for ETL processes. - Alkis Simitsis (DOLAP, 2005)

Blueprints and Measures for ETL Workflows. - Panos Vassiliadis; Alkis Simitsis; Manolis Terrovitis; Spiros Skiadopoulos (ER, 2005)

Optimizing ETL Processes in Data Warehouses. - Alkis Simitsis; Panos Vassiliadis; Timos K. Sellis (ICDE, 2005)

Workflow Based Security Incident Management. - Meletis A. Belsis; Alkis Simitsis; Stefanos Gritzalis (Panhellenic Conference on Informatics, 2005)

A generic and customizable framework for the design of ETL scenarios. - Panos Vassiliadis; Alkis Simitsis; Panos Georgantas; Manolis Terrovitis; Spiros Skiadopoulos (Inf. Syst., 2005)

State-Space Optimization of ETL Workflows. - Alkis Simitsis; Panos Vassiliadis; Timos K. Sellis (IEEE Trans. Knowl. Data Eng., 2005)

Comprehensible Answers to Précis Queries. - Alkis Simitsis; Georgia Koutrika (CAiSE, 2006)

Designing ETL processes using semantic web technologies. - Dimitrios Skoutas 001; Alkis Simitsis (DOLAP, 2006)

Pattern-Based Query Answering. - Alkis Simitsis; Georgia Koutrika (EDBT Workshops, 2006)

An Enhanced Search Interface for Information Discovery from Digital Libraries. - Georgia Koutrika; Alkis Simitsis (ECDL, 2006)

Précis: The Essence of a Query Answer. - Georgia Koutrika; Alkis Simitsis; Yannis E. Ioannidis (ICDE, 2006)

A Ranking Mechanism for SemanticWeb Service Discovery. - Dimitrios Skoutas 001; Alkis Simitsis; Timos K. Sellis (IEEE SCW, 2007)

ETL Workflows: From Formal Specification to Optimization. - Timos K. Sellis; Alkis Simitsis (ADBIS, 2007)

What-If Analysis for Data Warehouse Evolution. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis; Yannis Vassiliou (DaWaK, 2007)

Deciding the physical implementation of ETL workflows. - Vasiliki Tziovara; Panos Vassiliadis; Alkis Simitsis (DOLAP, 2007)

Supporting Streaming Updates in an Active Data Warehouse. - Neoklis Polyzotis; Spiros Skiadopoulos; Panos Vassiliadis; Alkis Simitsis; Nils-Erik Frantzell (ICDE, 2007)

Generalized Précis Queries for Logical Database Subset Creation. - Alkis Simitsis; Georgia Koutrika; Yannis E. Ioannidis (ICDE, 2007)

Towards a Benchmark for ETL Workflows. - Panos Vassiliadis; Anastasios Karagiannis; Vasiliki Tziovara; Alkis Simitsis (QDB, 2007)

Flexible and Customizable NL Representation of Requirements for ETL processes. - Dimitrios Skoutas 001; Alkis Simitsis (NLDB, 2007)

Ontology-Based Data Sharing in P2P Databases. - Dimitrios Skoutas 001; Verena Kantere; Alkis Simitsis; Timos K. Sellis (SWDB-ODBIS, 2007)

Ontology-Based Conceptual Design of ETL Processes for Both Structured and Semi-Structured Data. - Dimitrios Skoutas 001; Alkis Simitsis (Int. J. Semantic Web Inf. Syst., 2007)

Natural language reporting for ETL processes. - Alkis Simitsis; Dimitrios Skoutas 001; Malú Castellanos (DOLAP, 2008)

Synthesizing structured text from logical database subsets. - Alkis Simitsis; Georgia Koutrika; Yannis Alexandrakis; Yannis E. Ioannidis (EDBT, 2008)

Design Metrics for Data Warehouse Evolution. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis; Yannis Vassiliou (ER, 2008)

Language Extensions for the Automation of Database Schema Evolution. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis; Konstantinos Aggistalis; Fotini Pechlivani; Yannis Vassiliou (ICEIS (1), 2008)

Serving the Sky: Discovering and Selecting Semantic Web Services through Dynamic Skyline Queries. - Dimitrios Skoutas 001; Dimitris Sacharidis; Alkis Simitsis; Timos K. Sellis (ICSC, 2008)

A method for the mapping of conceptual designs to logical blueprints for ETL processes. - Alkis Simitsis; Panos Vassiliadis (Decis. Support Syst., 2008)

Discovery and Selection of Services on the Semantic Web. - Dimitrios Skoutas 001; Alkis Simitsis; Timos K. Sellis (ERCIM News, 2008)

DBPubs: multidimensional exploration of database publications. - Akanksha Baid; Andrey Balmin; Heasoo Hwang; Erik Nijkamp; Jun Rao; Berthold Reinwald; Alkis Simitsis; Yannis Sismanis; Frank van Ham (Proc. VLDB Endow., 2008)

Multidimensional content eXploration. - Alkis Simitsis; Akanksha Baid; Yannis Sismanis; Berthold Reinwald (Proc. VLDB Endow., 2008)

Meshing Streaming Updates with Persistent Data in an Active Data Warehouse. - Neoklis Polyzotis; Spiros Skiadopoulos; Panos Vassiliadis; Alkis Simitsis; Nils-Erik Frantzell (IEEE Trans. Knowl. Data Eng., 2008)

Précis: from unstructured keywords as queries to structured databases as answers. - Alkis Simitsis; Georgia Koutrika; Yannis E. Ioannidis (VLDB J., 2008)

Rule-Based Management of Schema Changes at ETL Sources. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis; Timos K. Sellis; Yannis Vassiliou (ADBIS (Workshops), 2009)

DBMSs Should Talk Back Too. - Alkis Simitsis; Yannis E. Ioannidis (CIDR, 2009)

A taxonomy of ETL activities. - Panos Vassiliadis; Alkis Simitsis; Eftychia Baikousi (DOLAP, 2009)

Automating the loading of business process data warehouses. - Malú Castellanos; Alkis Simitsis; Kevin Wilkinson; Umeshwar Dayal (EDBT, 2009)

Data integration flows for business intelligence. - Umeshwar Dayal; Malú Castellanos; Alkis Simitsis; Kevin Wilkinson (EDBT, 2009)

Top-k dominant web services under multi-criteria matching. - Dimitrios Skoutas 001; Dimitris Sacharidis; Alkis Simitsis; Verena Kantere; Timos K. Sellis (EDBT, 2009)

QoX-driven ETL design: reducing the cost of ETL consulting engagements. - Alkis Simitsis; Kevin Wilkinson; Malú Castellanos; Umeshwar Dayal (SIGMOD Conference, 2009)

Benchmarking ETL Workflows. - Alkis Simitsis; Panos Vassiliadis; Umeshwar Dayal; Anastasios Karagiannis; Vasiliki Tziovara (TPCTC, 2009)

Business Processes Meet Operational Business Intelligence. - Umeshwar Dayal; Kevin Wilkinson; Alkis Simitsis; Malú Castellanos (IEEE Data Eng. Bull., 2009)

Policy-Regulated Management of ETL Evolution. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis; Yannis Vassiliou (J. Data Semant., 2009)

Ontology-Driven Conceptual Design of ETL Processes Using Graph Transformations. - Dimitrios Skoutas 001; Alkis Simitsis; Timos K. Sellis (J. Data Semant., 2009)

Data Warehouse Back-End Tools. - Alkis Simitsis; Dimitri Theodoratos (Encyclopedia of Data Warehousing and Mining, 2009)

Materialized View Selection for Data Warehouse Design. - Dimitri Theodoratos; Wugang Xu; Alkis Simitsis (Encyclopedia of Data Warehousing and Mining, 2009)

Extraction, Transformation, and Loading. - Panos Vassiliadis; Alkis Simitsis (Encyclopedia of Database Systems, 2009)

Near Real Time ETL. - Panos Vassiliadis; Alkis Simitsis (New Trends in Data Warehousing and Data Analysis, 2009)

Leveraging Business Process Models for ETL Design. - Kevin Wilkinson; Alkis Simitsis; Malú Castellanos; Umeshwar Dayal (ER, 2010)

Explaining structured queries in natural language. - Georgia Koutrika; Alkis Simitsis; Yannis E. Ioannidis (ICDE, 2010)

HECATAEUS: Regulating schema evolution. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis; Yannis Vassiliou (ICDE, 2010)

Partitioning real-time ETL workflows. - Alkis Simitsis; Chetan Gupta 001; Song Wang 001; Umeshwar Dayal (ICDE Workshops, 2010)

Optimizing ETL workflows for fault-tolerance. - Alkis Simitsis; Kevin Wilkinson; Umeshwar Dayal; Malú Castellanos (ICDE, 2010)

Representation of conceptual ETL designs in natural language using Semantic Web technology. - Alkis Simitsis; Dimitrios Skoutas 001; Malú Castellanos (Data Knowl. Eng., 2010)

Ranking and Clustering Web Services Using Multicriteria Dominance Relationships. - Dimitrios Skoutas 001; Dimitris Sacharidis; Alkis Simitsis; Timos K. Sellis (IEEE Trans. Serv. Comput., 2010)

GEM: Requirement-Driven Generation of ETL and Multidimensional Conceptual Designs. - Oscar Romero 001; Alkis Simitsis; Alberto Abelló (DaWaK, 2011)

Designing integration flows using hypercubes. - Kevin Wilkinson; Alkis Simitsis (EDBT, 2011)

Preface to the Industrial Track. - Alkis Simitsis; Hans Van Mingroot (ER Workshops, 2011)

Propagating evolution events in data-centric software artifacts. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis (ICDE Workshops, 2011)

Optimization of Analytic Data Flows for Next Generation Business Intelligence Applications. - Umeshwar Dayal; Kevin Wilkinson; Alkis Simitsis; Malú Castellanos; Lupita Paz (TPCTC, 2011)

Integrating ETL Processes from Information Requirements. - Petar Jovanovic 001; Oscar Romero 001; Alkis Simitsis; Alberto Abelló (DaWaK, 2012)

ORE: an iterative approach to the design and evolution of multi-dimensional schemas. - Petar Jovanovic 001; Oscar Romero 001; Alkis Simitsis; Alberto Abelló (DOLAP, 2012)

Requirement-Driven Creation and Deployment of Multidimensional and ETL Designs. - Petar Jovanovic 001; Oscar Romero 001; Alkis Simitsis; Alberto Abelló (ER Workshops, 2012)

CloudAlloc: a monitoring and reservation system for compute clusters. - Enrico Iori; Alkis Simitsis; Themis Palpanas; Kevin Wilkinson; Stavros Harizopoulos (SIGMOD Conference, 2012)

Logos: a system for translating queries into narratives. - Andreas Kokkalis; Panagiotis Vagenas; Alexandros Zervakis; Alkis Simitsis; Georgia Koutrika; Yannis E. Ioannidis (SIGMOD Conference, 2012)

Optimizing analytic data flows for multiple execution engines. - Alkis Simitsis; Kevin Wilkinson; Malú Castellanos; Umeshwar Dayal (SIGMOD Conference, 2012)

Optimizing Flows for Real Time Operations Management. - Alkis Simitsis; Chetan Gupta 001; Kevin Wilkinson; Umeshwar Dayal (SSDBM, 2012)

Revisiting ETL Benchmarking: The Case for Hybrid Flows. - Alkis Simitsis; Kevin Wilkinson (TPCTC, 2012)

Searching semantic data warehouses: models, issues, architectures. - Alfredo Cuzzocrea; Alkis Simitsis (SSW@VLDB, 2012)

Metrics for the Prediction of Evolution Impact in ETL Ecosystems: A Case Study. - George Papastefanatos; Panos Vassiliadis; Alkis Simitsis; Yannis Vassiliou (J. Data Semant., 2012)

Mirror mirror on the wall, which query's fairest of them all? - Georgia Koutrika; Alkis Simitsis (CIDR, 2013)

HFMS: Managing the lifecycle and complexity of hybrid analytic data flows. - Alkis Simitsis; Kevin Wilkinson; Umeshwar Dayal; Meichun Hsu (ICDE, 2013)

The farm: where pig scripts are bred and raised. - Craig P. Sayers; Alkis Simitsis; Georgia Koutrika; Alejandro Guerrero Gonzalez; David Tamez Cantu; Meichun Hsu (SIGMOD Conference, 2013)

xPAD: a platform for analytic data flows. - Alkis Simitsis; Kevin Wilkinson; Petar Jovanovic 001 (SIGMOD Conference, 2013)

Hybrid Analytic Flows - the Case for Optimization. - Alkis Simitsis; Kevin Wilkinson; Umeshwar Dayal (Fundam. Informaticae, 2013)

Scheduling strategies for efficient ETL execution. - Anastasios Karagiannis; Panos Vassiliadis; Alkis Simitsis (Inf. Syst., 2013)

Engine independence for logical analytic flows. - Petar Jovanovic 001; Alkis Simitsis; Kevin Wilkinson (ICDE, 2014)

BabbleFlow: a translator for analytic data flow programs. - Petar Jovanovic 001; Alkis Simitsis; Kevin Wilkinson (SIGMOD Conference, 2014)

VQA: vertica query analyzer. - Alkis Simitsis; Kevin Wilkinson; Jason Blais; Joe Walsh (SIGMOD Conference, 2014)

A requirement-driven approach to the design and evolution of data warehouses. - Petar Jovanovic 001; Oscar Romero 001; Alkis Simitsis; Alberto Abelló; Daria Mayorova (Inf. Syst., 2014)

Quarry: Digging Up the Gems of Your Data Treasury. - Petar Jovanovic 001; Oscar Romero 001; Alkis Simitsis; Alberto Abelló; Héctor Candón; Sergi Nadal (EDBT, 2015)

Using Semantic Web Technologies for Exploratory OLAP: A Survey. - Alberto Abelló; Oscar Romero 001; Torben Bach Pedersen; Rafael Berlanga Llavori; Victoria Nebot; María José Aramburu Cabo; Alkis Simitsis (IEEE Trans. Knowl. Data Eng., 2015)

Multi-core column-store parallelization under concurrent workload. - Mrunal Gawade; Martin L. Kersten; Alkis Simitsis (DaMoN, 2016)

A hybrid solution for mixed workloads on dynamic graphs. - Mahashweta Das; Alkis Simitsis; Kevin Wilkinson (GRADES, 2016)

Incremental Consolidation of Data-Intensive Multi-Flows. - Petar Jovanovic 001; Oscar Romero 001; Alkis Simitsis; Alberto Abelló (IEEE Trans. Knowl. Data Eng., 2016)

Janus: Transaction Processing of Navigation and Analytic Graph Queries on Many-core Servers. - Hideaki Kimura 001; Alkis Simitsis; Kevin Wilkinson (CIDR, 2017)

GnosisMiner: Reading Order Recommendations over Document Collections. - Georgia Koutrika; Alkis Simitsis; Yannis E. Ioannidis (EDBT, 2017)

Big Data Management: New Frontiers, New Paradigms. - Alfredo Cuzzocrea; Alkis Simitsis; Il-Yeol Song (Inf. Syst., 2017)

The many faces of data-centric workflow optimization: a survey. - Georgia Kougka; Anastasios Gounaris; Alkis Simitsis (Int. J. Data Sci. Anal., 2018)

Extraction, Transformation, and Loading. - Alkis Simitsis; Panos Vassiliadis (Encyclopedia of Database Systems (2nd ed.), 2018)

Automated Performance Management for the Big Data Stack. - Anastasios Arvanitis; Shivnath Babu; Eric Chu; Adrian Popescu; Alkis Simitsis; Kevin Wilkinson (CIDR, 2019)

Cost-Effective, Workload-Adaptive Migration of Big Data Applications to the Cloud. - Victor Giannakouris; Alejandro Fernandez; Alkis Simitsis; Shivnath Babu (SIGMOD Conference, 2019)

INforE: Interactive Cross-platform Analytics for Everyone. - Nikos Giatrakos; David Arnu; Theodoros Bitsakis; Antonios Deligiannakis; Minos N. Garofalakis; Ralf Klinkenberg; Aris Konidaris; Antonis Kontaxakis; Yannis Kotidis; Vasilis Samoladas; Alkis Simitsis; George Stamatakis 002; et al. (CIKM, 2020)

Extreme-Scale Interactive Cross-Platform Streaming Analytics - The INFORE Approach. - Antonios Deligiannakis; Nikos Giatrakos; Yannis Kotidis; Vasilis Samoladas; Alkis Simitsis (SEA-Data@VLDB, 2021)

SheerMP: Optimized Streaming Analytics-as-a-Service over Multi-site and Multi-platform Settings. - George Stamatakis 002; Antonis Kontaxakis; Alkis Simitsis; Nikos Giatrakos; Antonios Deligiannakis (EDBT, 2022)

Database Optimizers in the Era of Learning. - Dimitris Tsesmelis; Alkis Simitsis (ICDE, 2022)

YeSQL: Rich User-Defined Functions without the Overhead. - Yannis E. Foufoulas; Alkis Simitsis; Yannis E. Ioannidis (Proc. VLDB Endow., 2022)

YeSQL: "You extend SQL" with Rich and Highly Performant User-Defined Functions in Relational Databases. - Yannis E. Foufoulas; Alkis Simitsis; Eleftherios Stamatogiannakis; Yannis E. Ioannidis (Proc. VLDB Endow., 2022)

Adversarial Learning in Real-World Fraud Detection: Challenges and Perspectives. - Daniele Lunghi; Alkis Simitsis; Olivier Caelen; Gianluca Bontempi (DEC@SIGMOD, 2023)

The History, Present, and Future of ETL Technology (invited). - Alkis Simitsis; Spiros Skiadopoulos; Panos Vassiliadis (DOLAP, 2023)

Toulouse: Learning Join Order Optimization Policies for Rule-based Data Engines. - Antonios Karvelas; Yannis Foufoulas; Alkis Simitsis; Yannis E. Ioannidis (EDBT/ICDT Workshops, 2023)

User-Defined Functions in Modern Data Engines. - Yannis Foufoulas; Alkis Simitsis (ICDE, 2023)

Efficient Execution of User-Defined Functions in SQL Queries. - Yannis Foufoulas; Alkis Simitsis (Proc. VLDB Endow., 2023)

Performance Analysis of Distributed GPU-Accelerated Task-Based Workflows. - Marcos N. L. Carvalho; Anna Queralt; Oscar Romero 001; Alkis Simitsis; Cristian Tatu; Rosa M. Badia (EDBT, 2024)

MIP: Advanced Data Processing and Analytics for Science and Medicine. - Kostas Filippopolitis; Yannis Foufoulas; Minos N. Garofalakis; Apostolos Glenis; Yannis E. Ioannidis; Thanasis-Michail Karampatsis; Maria-Olympia Katsouli; Evdokia Mailli; Asimakis Papageorgiou-Mariglis; Giorgos Papanikos; George Pikramenos; Jason Sakellariou; et al. (EDBT, 2024)

QFusor: A UDF Optimizer Plugin for SQL Databases. - Konstantinos Chasialis; Theoni Palaiologou; Yannis Foufoulas; Alkis Simitsis; Yannis E. Ioannidis (ICDE, 2024)

HYPPO: Using Equivalences to Optimize Pipelines in Exploratory Machine Learning. - Antonios Kontaxakis; Dimitris Sacharidis; Alkis Simitsis; Alberto Abelló; Sergi Nadal (ICDE, 2024)

Assessing adversarial attacks in real-world fraud detection. - Daniele Lunghi; Alkis Simitsis; Gianluca Bontempi (ICWS, 2024)

A Study on Efficient Indexing for Table Search in Data Lakes. - Ibraheem Taha; Matteo Lissandrini; Alkis Simitsis; Yannis E. Ioannidis (ICSC, 2024)

Workload Placement on Heterogeneous CPU-GPU Systems. - Marcos N. L. Carvalho; Alkis Simitsis; Anna Queralt; Oscar Romero 001 (Proc. VLDB Endow., 2024)

Hyppo: Efficient Discovery and Execution of Data Science Pipelines in Collaborative Environments. - Antonios Kontaxakis; Dimitris Sacharidis; Alkis Simitsis; Alberto Abelló; Sergi Nadal (EDBT, 2025)

HAIDES: Adaptive Approximation of Inference Queries over Unstructured Data. - Christos C. Papadopoulos; Alkis Simitsis; Torben Bach Pedersen (ICDE, 2025)

UDFBench: A Tool for Benchmarking UDF Queries on SQL Engines. - Yannis Foufoulas; Theoni Palaiologou; Alkis Simitsis (SIGMOD Conference Companion, 2025)

Comparative Analysis of Indexing Techniques for Table Search in Data Lakes. - Ibraheem Taha; Matteo Lissandrini; Alkis Simitsis; Yannis E. Ioannidis (Int. J. Semantic Comput., 2025)

FRAUD-RLA: A new reinforcement learning adversarial attack against credit card fraud detection. - Daniele Lunghi; Yannick Molinghen; Alkis Simitsis; Tom Lenaerts; Gianluca Bontempi (CoRR, 2025)