2026 DARTH+: Approximate Nearest Neighbor Search with Declarative Recall and Quality Guarantees [paper] [code] Manos Chatzakis , Yannis Papakonstantinou , and Themis Palpanas 2026 An In-Depth Study of Filter-Agnostic Vector Search on a PostgreSQL Database System [paper] Duo Lu , Helena Caminal , Manos Chatzakis , and 4 more authors Proceedings of the ACM on Management of Data, 2026 The quest for faster ann vector search [paper] [slides] Manos Chatzakis , Francesca Del Gaudio , Sophia Sideri , and 1 more author EDBT, 2026 DaiSy: A Library for Scalable Data Series Similarity Search [paper] [code] Francesca Del Gaudio , Manos Chatzakis , Gayathiri Ravendirane , and 2 more authors arXiv preprint arXiv:2603.27719, 2026 2025 DARTH: Declarative recall through early termination for approximate nearest neighbor search [paper] [code] [poster] [slides] Manos Chatzakis , Yannis Papakonstantinou , and Themis Palpanas Proceedings of the ACM on Management of Data, 2025 2024 Context-Enhanced Relational Operators with Vector Embeddings [paper] [code] Viktor Sanca , Manos Chatzakis , and Anastasia Ailamaki IEEE International Conference on Data Engineering (ICDE), 2024 2023 Odyssey: A Journey in the Land of Distributed Data Series Similarity Search [paper] [code] Manos Chatzakis , Panagiota Fatourou , Eleftherios Kosmas , and 2 more authors Proceedings of the VLDB Endowment (PVLDB), 2023 2022 A spiral-like method to place in the space (and interact with) too many values [paper] [code] Yannis Tzitzikas , Maria-Evangelia Papadaki , and Manos Chatzakis Journal of Intelligent Information Systems (JIIS), 2022 2021 RDFSIM: similarity-based browsing over dbpedia using embeddings [paper] [code] Manos Chatzakis , Michalis Mountantonakis , and Yannis Tzitzikas Information MDPI, 2021