publications

2026

1. DARTH+: Approximate Nearest Neighbor Search with Declarative Recall and Quality Guarantees

   Manos Chatzakis ,  Yannis Papakonstantinou ,  and  Themis Palpanas

   Mar 2026

   This paper is an extended version of “DARTH: Declarative Recall Through Early Termination for Approximate Nearest Neighbor Search” (SIGMOD 2026) and is currently under review.

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2. An In-Depth Study of Filter-Agnostic Vector Search on a PostgreSQL Database System: [Experiments and Analysis]

   Duo Lu ,  Helena Caminal ,  Manos Chatzakis , and 4 more authors

   Proceedings of the ACM on Management of Data, Mar 2026

   Bib HTML

   @article{lu2026bench,
     title = {An In-Depth Study of Filter-Agnostic Vector Search on a PostgreSQL Database System: [Experiments and Analysis]},
     author = {Lu, Duo and Caminal, Helena and Chatzakis, Manos and Papakonstantinou, Yannis and Chronis, Yannis and Jain, Vaibhavi and Ozcan, Fatma},
     journal = {Proceedings of the ACM on Management of Data},
     year = {2026},
   }

3. The quest for faster ann vector search

   Manos Chatzakis ,  Francesca Del Gaudio ,  Sophia Sideri , and 1 more author

   In , Mar 2026

2025

1. Darth: Declarative recall through early termination for approximate nearest neighbor search

   Manos Chatzakis ,  Yannis Papakonstantinou ,  and  Themis Palpanas

   Proceedings of the ACM on Management of Data, Mar 2025

2024

1. Context-Enhanced Relational Operators with Vector Embeddings

   Viktor Sanca ,  Manos Chatzakis ,  and  Anastasia Ailamaki

   IEEE International Conference on Data Engineering (ICDE), Mar 2024

   Bib HTML

   @article{sanca2024context,
     title = {Context-Enhanced Relational Operators with Vector Embeddings},
     author = {Sanca, Viktor and Chatzakis, Manos and Ailamaki, Anastasia},
     journal = {IEEE International Conference on Data Engineering (ICDE)},
     year = {2024},
   }

2023

1. Odyssey: A Journey in the Land of Distributed Data Series Similarity Search

   Manos Chatzakis ,  Panagiota Fatourou ,  Eleftherios Kosmas , and 2 more authors

   Proceedings of the VLDB Endowment (PVLDB), Mar 2023

   Bib HTML

   @article{chatzakis2023odyssey,
     title = {Odyssey: A Journey in the Land of Distributed Data Series Similarity Search},
     author = {Chatzakis, Manos and Fatourou, Panagiota and Kosmas, Eleftherios and Palpanas, Themis and Peng, Botao},
     journal = {Proceedings of the VLDB Endowment (PVLDB)},
     volume = {16},
     number = {5},
     pages = {1140--1153},
     year = {2023},
     publisher = {VLDB Endowment},
   }

2022

1. A spiral-like method to place in the space (and interact with) too many values

   Yannis Tzitzikas ,  Maria-Evangelia Papadaki ,  and  Manos Chatzakis

   Journal of Intelligent Information Systems (JIIS), Mar 2022

   Bib HTML

   @article{tzitzikas2022spiral,
     title = {A spiral-like method to place in the space (and interact with) too many values},
     author = {Tzitzikas, Yannis and Papadaki, Maria-Evangelia and Chatzakis, Manos},
     journal = {Journal of Intelligent Information Systems (JIIS)},
     volume = {58},
     number = {3},
     pages = {535--559},
     year = {2022},
     publisher = {Springer},
   }

2021

1. RDFSIM: similarity-based browsing over dbpedia using embeddings

   Manos Chatzakis ,  Michalis Mountantonakis ,  and  Yannis Tzitzikas

   Information MDPI, Mar 2021

   Bib HTML

   @article{chatzakis2021rdfsim,
     title = {RDFSIM: similarity-based browsing over dbpedia using embeddings},
     author = {Chatzakis, Manos and Mountantonakis, Michalis and Tzitzikas, Yannis},
     journal = {Information MDPI},
     volume = {12},
     number = {11},
     pages = {440},
     year = {2021},
     publisher = {MDPI},
   }