Data Discovery Platform with Generalized Exploratory, Management, and Search Capabilities

Comparison and Analysis of Value Linking in Text-to-SQL systems: [Experiments & Analysis]

Author(s): Apostolos Koukouvinis, George Katsogiannis-Meimarakis, Georgia Koutrika
Published in: Proceedings of the ACM on Management of Data, Issue 4, 2026, ISSN 2836-6573
Publisher: Association for Computing Machinery (ACM)
DOI: 10.1145/3802029

$k$-Graph: A Graph Embedding for Interpretable Time Series Clustering

Author(s): Boniol, Paul; Tiano, Donato; Bonifati, Angela; Palpanas, Themis
Published in: IEEE Transactions on Knowledge and Data Engineering, 2025, ISSN 1558-2191
Publisher: IEEE
DOI: 10.48550/ARXIV.2502.13049

Graph-Based Vector Search: An Experimental Evaluation of the State-of-the-Art

Author(s): Ilias Azizi, Karima Echihabi, Themis Palpanas
Published in: Proceedings of the ACM on Management of Data, Issue 3, 2026, ISSN 2836-6573
Publisher: Association for Computing Machinery (ACM)
DOI: 10.1145/3709693

LeaFi: Data Series Indexes on Steroids with Learned Filters

Author(s): Qitong Wang, Ioana Ileana, Themis Palpanas
Published in: Proceedings of the ACM on Management of Data, Issue 3, 2026, ISSN 2836-6573
Publisher: Association for Computing Machinery (ACM)
DOI: 10.1145/3709701

Graphint: Graph-Based Time Series Clustering Visualisation Tool

Author(s): Boniol, Paul; Tiano, Donato; Bonifati, Angela; Palpanas, Themis
Published in: 2025 IEEE 41st International Conference on Data Engineering (ICDE), 2025, ISSN 2375-026X
Publisher: IEEE
DOI: 10.48550/ARXIV.2503.07698

DARTH: Declarative Recall Through Early Termination for Approximate Nearest Neighbor Search

Author(s): Manos Chatzakis, Yannis Papakonstantinou, Themis Palpanas
Published in: Proceedings of the ACM on Management of Data, Issue 3, 2026, ISSN 2836-6573
Publisher: Association for Computing Machinery (ACM)
DOI: 10.1145/3749160

APEROL: Adaptive Parallel Edge-to-Cloud Runtime Optimization for Layered Workflow Execution

Author(s): Dimitrios Banelas, Alkis Simitsis, Nikos Giatrakos
Published in: Proceedings of the VLDB Endowment, Issue 19, 2026, ISSN 2150-8097
Publisher: Association for Computing Machinery (ACM)
DOI: 10.14778/3773749.3773755

Model reusability in Reinforcement Learning

Author(s): Nikookar, Sepideh; Namazi Nia, Sohrab; Basu Roy, Senjuti; Amer-Yahia, Sihem; Omidvar-Tehrani, Behrooz
Published in: The VLDB Journal, 2025, ISSN 0949-877X
Publisher: Springer Nature
DOI: 10.1007/S00778-025-00920-0

Multi-objective Clustering Algorithm Applied to the MathE Categorization Problem

Author(s): Beatriz Flamia Azevedo, Gabriel A. Leite, M. Fátima Pacheco, Florbela P. Fernandes, Ana Maria A. C. Rocha, Ana I. Pereira
Published in: Information Systems Frontiers, 2026, ISSN 1387-3326
Publisher: Springer Science and Business Media LLC
DOI: 10.1007/S10796-025-10674-3

Subspace Collision: An Efficient and Accurate Framework for High-dimensional Approximate Nearest Neighbor Search

Author(s): Jiuqi Wei; Xiaodong Lee; Zhenyu Liao 0001; Themis Palpanas; Botao Peng
Published in: Proceedings of the ACM on Management of Data, 2025, ISSN 1557-7341
Publisher: PACMMOD
DOI: 10.48550/ARXIV.2411.14754

VUS: effective and efficient accuracy measures for time-series anomaly detection

Author(s): Paul Boniol; Ashwin K. Krishna; Marine Bruel; Qinghua Liu; Mingyi Huang; Themis Palpanas; Ruey S. Tsay; Aaron J. Elmore; Michael J. Franklin; John Paparrizos
Published in: The VLDB Journal, 2025, ISSN 0949-877X
Publisher: Springer Nature
DOI: 10.48550/ARXIV.2502.13318

R-Fairness: Assessing Fairness of Ranking in Subjective Data

Author(s): Balzotti, Lorenzo; Firmani, Donatella; Mathew, Jerin George; Torlone, Riccardo; Amer-Yahia, Sihem
Published in: Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), 2025, ISSN 0736-587X
Publisher: Association for Computational Linguistics
DOI: 10.5281/ZENODO.15504617

Reducing Human Effort in Evaluating Small and Medium Language Models as Students and as Teachers

Author(s): Oleh Prostakov, Viacheslav Hodlevskyi, Nassim Bouarour, Adam Sanchez-Ayte, Noha Ibrahim, and Sihem Amer-Yahia
Published in: 2025, ISSN 2150-8097
Publisher: PVLDB

Optimizing Source Selection for Tuple-Value Discovery

Author(s): Ahmad Fares, Georgia Troullinou, Silviu Maniu, Sihem Amer-Yahia
Published in: 2025, ISSN 2150-8097
Publisher: VLDB

DeviceScope: An Interactive App to Detect and Localize Appliance Patterns in Electricity Consumption Time Series

Author(s): Adrien Petralia, Paul Boniol, Philippe Charpentier, Themis Palpanas
Published in: 2025 IEEE 41st International Conference on Data Engineering (ICDE), 2025
Publisher: IEEE
DOI: 10.1109/ICDE65448.2025.00350

Few Labels are All you Need: A Weakly Supervised Framework for Appliance Localization in Smart-Meter Series

Author(s): Adrien Petralia, Paul Boniol, Philippe Charpentier, Themis Palpanas
Published in: 2025 IEEE 41st International Conference on Data Engineering (ICDE), 2025
Publisher: IEEE
DOI: 10.1109/ICDE65448.2025.00329

An End-to-End Re-Evaluation of Table Entity-Linkers

Author(s): Christensen Martin Pekár, Lissandrini Matteo, Hose Katja
Published in: 2026
Publisher: Zenodo

User-Friendly Foundation Model Adapters for Multivariate Time Series Classification

Author(s): Romain Ilbert, Vasilii Feofanov, Malik Tiomoko, Ievgen Redko, Themis Palpanas
Published in: 2025 IEEE 41st International Conference on Data Engineering Workshops (ICDEW), 2025
Publisher: IEEE
DOI: 10.1109/ICDEW67478.2025.00024

Optimizing UDF Queries in SQL Data Engines

Author(s): Konstsntinos Chasialis, Yannis Foufoulas, Alkis Simitsis, Yannis Ioannidis
Published in: 2026, ISSN 2367-2005
Publisher: OpenProceedings

PG-HIVE: Hybrid Incremental Schema Discovery for Property Graphs

Author(s): Sofia Sideri, Georgia Troullinou, Elisjana Ymeralli, Vasilis Efthymiou, Dimitris Plexousakis, Haridimos Kondylakis
Published in: 2026, ISSN 2367-2005
Publisher: OpenProceedings

NILMFormer: Non-Intrusive Load Monitoring that Accounts for Non-Stationarity

Author(s): Adrien Petralia, Philippe Charpentier, Youssef Kadhi, Themis Palpanas
Published in: Proceedings of the 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining V.2, 2026
Publisher: ACM
DOI: 10.1145/3711896.3737251

Towards a Neural Database Execution Engine

Author(s): Christos Tsapelas
Published in: 2025
Publisher: CEUR-WS

Hyppo: Efficient Discovery and Execution of Data Science Pipelines in Collaborative Environments

Author(s): Antonios Kontaxakis, Dimitris Sacharidis, Alkis Simitsis, Alberto Abelló, Sergi Nadal
Published in: 2025, ISSN 2367-2005
Publisher: OpenProceedings

In-depth Analysis of LLM-based Schema Linking

Author(s): George Katsogiannis-Meimarakis, Katsiaryna Mirylenka, Paolo Scotton, Francesco Fusco, Abdel Labbi
Published in: 2026, ISSN 2367-2005
Publisher: OpenProceedings

Analysis of Text-to-SQL Benchmarks: Limitations, Challenges

Author(s): Anna Mitsopoulou,Georgia Koutrika
Published in: 2025
Publisher: OpenProceedings

Flood Detection in Switzerland Using Sentinel-2 Satellite Imagery

Author(s): Claude Lehmann, Kurt Stockinger, Pavel Sulimov
Published in: 2026 IEEE Swiss Conference on Data Science and AI (SDS), 2026
Publisher: IEEE
DOI: 10.1109/SDS70563.2026.00033

Multi-Modal Data Exploration via Language Agents

Author(s): Farhad Nooralahzadeh, Yi Zhang, Jonathan Fürst, Kurt Stockinger
Published in: Proceedings of the 14th International Joint Conference on Natural Language Processing and the 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics, 2026
Publisher: The Asian Federation of Natural Language Processing and The Association for Computational Linguistics
DOI: 10.18653/V1/2025.FINDINGS-IJCNLP.47

UDFB <scp>ench</scp> : A Tool for Benchmarking UDF Queries on SQL Engines

Author(s): Yannis Foufoulas, Theoni Palaiologou, Alkis Simitsis
Published in: Companion of the 2025 International Conference on Management of Data, 2025
Publisher: ACM
DOI: 10.1145/3722212.3725139

What Drives Learned Optimizer Performance? A Systematic

Author(s): Kostas Mparmparousis, Christos Tsapelas, Georgia Koutrika
Published in: OpenProceedings, 2026, ISSN 2367-2005
Publisher: OpenProceedings

The UDFBench Benchmark for General-purpose UDF Queries

Author(s): Yannis Foufoulas, Theoni Palaiologou, and Alkis Simitsis
Published in: 2025
Publisher: PVLDB
DOI: 10.14778/3746405.3746409

Problem Solved? Information Extraction Design Space for Layout-Rich Documents using LLMs

Author(s): Gaye Colakoglu, Gürkan Solmaz, Jonathan Fürst
Published in: Findings of the Association for Computational Linguistics: EMNLP 2025, 2025
Publisher: Association for Computational Linguistics
DOI: 10.18653/V1/2025.FINDINGS-EMNLP.973

HAIDES: Adaptive Approximation of Inference Queries over Unstructured Data

Author(s): Christos C. Papadopoulos, Alkis Simitsis, Torben Bach Pedersen
Published in: 2025 IEEE 41st International Conference on Data Engineering (ICDE), 2025
Publisher: IEEE
DOI: 10.1109/ICDE65448.2025.00181

Linear Transformations for Privacy-Preserving Machine Learning

Author(s): Pavel Sulimov, Sergey Eremeykin
Published in: 2026 IEEE Swiss Conference on Data Science and AI (SDS), 2026, ISSN 2835-3420
Publisher: IEEE
DOI: 10.1109/SDS70563.2026.00034

Supervised Cardinality Estimation for Similarity Queries on Knowledge Graphs

Author(s): Georgios Chatzigeorgakidis, Dimitrios Skoutas, Alkis Simitsis
Published in: 2026, ISSN 2472-9671
Publisher: IEEE

Evaluating and Generating Query Workloads for High Dimensional Vector Similarity Search

Author(s): Matteo Ceccarello, Alexandra Levchenko, Ioana Ileana, Themis Palpanas
Published in: Proceedings of the 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining V.2, 2026
Publisher: ACM
DOI: 10.1145/3711896.3737383

Jazero: A Semantic Table Search System

Author(s): Christensen, Martin Pekár; Lissandrini, Matteo; Hose, Katja
Published in: 2026
DOI: 10.5281/ZENODO.18935699

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