An In-Depth Benchmarking of Text-to-SQL Systems

Authors:   O. Gkini, T. Belmpas, G. Koutrika, Y. Ioannidis Accepted in:   ACM SIGMOID 2021 Abstract:   Text-to-SQL systems allow users to explore relational databases by posing free-form queries, alleviating the need for using structured languages, such as SQL....

Guided Exploration of User Groups

Authors:    Mariia Seleznova, Behrooz Omidvar-Tehrani, Sihem Amer-Yahia, Eric Simon Published in:   PVLDB 2020 Abstract:    Finding a set of users of interest serves several applications in behavioral analytics. Often times, identifying users re- quires to explore the...

Counting Query Answers over a DL-Lite Knowledge Base

Authors:      Diego Calvanese, Julien Corman, Davide Lanti, and Simon Razniewski Published in:   International Joint Conference on Artificial Intelligence (IJCAI 2020) Abstract:     Counting answers to a query is an operation supported by virtually all database...

Analysis of Database Search Systems with THOR

Authors:     Theofilos Belmpas, Orest Gkini, Georgia Koutrika Published in:    ACM SIGMOD 2020 Abstract:    Numerous search systems have been implemented that allow users to pose unstructured queries over databases without the need to use a query language, such as...