Manos Chatzakis

PhD Student at LIPADE, Université Paris Cité | Ex-Google, EPFL, CEA, UoC

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705G, 45 Rue des Saints-Pères, 75006 Paris, France

I am a second-year PhD student at LIPADE, Université Paris Cité, advised by Professor Themis Palpanas.

I am broadly interested in vector data management, specifically focusing on exact and approximate nearest neighbor vector search.

I have obtained my MSc in computer science from EPFL in Switzerland, and my BSc in computer science from the University of Crete in Greece, where I graduated first in my class.

I have held student researcher positions at Google in the United States, the Commision of Atomic Energy (CEA) in France, DIAS EPFL lab in Switzerland (summer@epfl), and FORTH-ICS in Greece.

I am honored to have received several awards and scholarships, including a PhD scholarship from the Onassis Foundation, MSc scholarships from the Latsis Foundation and the Onassis Foundation and undergraduate scholarships from the University of Crete. I was also honored to participate as a young computer scientist in the 9th Heidelberg Laureate Forum.

I maintain a dedicated page for my PhD research on declarative recall for vector search. For details about my professional background, refer to my detailed CV.

⚠️ We are always looking for motivated computer science BSc/MSc students to contribute to extensions within the DaiSy project. If you are interested, please reach out!

news

Mar 2026 We released DaiSy, an open-source library for super-fast exact vector and data series similarity search.
Feb 2026 Our benchmark paper An In-Depth Study of Filter-Agnostic Vector Search on a PostgreSQL Database System was accepted to SIGMOD 2026.
Nov 2025 I got awarded a distinguished PhD scholarhsip by the Onassis Foundation until 2028.
May 2025 Joined Google in Sunnyvale, California, as a Student Researcher for the summer of 2025.
May 2025 Our paper DARTH was accepted to SIGMOD 2026.

selected publications

  1. 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
  2. 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
  3. Context-Enhanced Relational Operators with Vector Embeddings [paper] [code]
    Viktor Sanca ,  Manos Chatzakis ,  and  Anastasia Ailamaki
    IEEE International Conference on Data Engineering (ICDE), 2024
  4. 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

service

VLDB 2027 (Regular Reviewer), VLDB 2026 (Demo Reviewer, Shadow PC Member)

about me

I usually spend most of my time on research and teaching. In my free time, I mostly enjoy travelling. I have been to more than 25 countries in the last 4 years! Some of the movies I love are 2001: A Space Odyssey, Interstellar, and Blade Runner. Some of my favourite video games are The Last of Us, Star Wars Jedi, NieR: Automata, and The Legend of Zelda: Tears of the Kingdom. Some of my favourite books are 1984 by George Orwell, Origin by Dan Brown, and Veronika Decides to Die by Paulo Coelho. I enjoy different kinds of music, but my favourite is indie/punk rock. My favourite artists are Pink Floyd, Green Day, My Chemical Romance, and The Strokes.