Ioana O. Bercea

Contact

E-mail: X@kth.se (replace X with my last name, i.e. starts with b...)

KTH EECS
Lindstedtsvägen 5
S-10044 Stockholm
Sweden
Office: 4541

I am a (tenure-track) Assistant Professor at the KTH Royal Institute of Technology, in Stockholm, Sweden.
I am part of the Division of Theoretical Computer Science of the Computer Science Department.

Previously, I was a Postdoc in the Basic Algorithms Research Copenhagen (BARC) group at the IT University of Copenhagen, hosted by Prof. Thore Husfeldt. Before joining BARC, I was a Postdoc at Tel Aviv University, hosted by Prof. Guy Even.

I obtained my PhD in Computer Science from the University of Maryland.
I had the privilege of being advised by Prof. Samir Khuller.
I obtained my Master's degree from UMD under the supervision of Prof. Aravind Srinivasan.
I graduated from the University of Chicago, with a Bachelor of Science in Mathematics (Honors) and Computer Science.

Curriculum Vitae, Publications (dblp), Google Scholar

Research Interests

I am interested in the broad area of Theoretical Computer Science and specifically in
  • Data Structures (e.g. dictionaries and Bloom filters)
  • Randomized and Approximation Algorithms (e.g. hashing, clustering)
  • Computational Geometry (e.g. Traveling Salesman Problem)

PhD students

News

  • Sep 2025: Our Diva paper was awarded Best Research Paper of VLDB 2025!
  • October 2024: Got the VR Starting Grant with the project "DataTech: Techniques for scalable data storage and analysis"!
  • May 2024: Our InfiniFilter paper was awarded Best Artifact of SIGMOD 2023!
  • April 2024: Became a Digital Futures Faculty!

    Conference Papers

    16. Diva: Dynamic Range Filter for Var-Length Keys and Queries
        In order for contribution: Navid Eslami, Ioana O. Bercea , Niv Dayan
         VLDB'25, [code]
        Best Research Paper award
         ACM SIGMOD Research Highlight Awards

    15. Algorithms for the Diverse-k-SAT problem: the geometry of satisfying assignments
    Joint work with : Per Austrin, Mayank Goswami, Nutan Limaye, and Adarsh Srinivasan
         ICALP'25, [ArXiv]

    14. Dynamic Filter and Retrieval with One Access to Modifiable Memory
    Joint work with : Guy Even, Tomer Even and Gabriel Marques Domingues
         CIAC'25

    13. Online sorting and online TSP: randomized, stochastic, and high-dimensional
    Joint work with : Mikkel Abrahamsen, Lorenzo Beretta, Jonas Klausen, László Kozma
         ESA'24, [ArXiv]

    12. Aleph Filter: To Infinity in Constant Time
        In order for contribution: Niv Dayan, Ioana O. Bercea , Rasmus Pagh
         VLDB'24, [ArXiv]

    11. Daisy Bloom Filters
        Joint work with Jakob Bæk Tejs Houen, Rasmus Pagh
        SWAT'24, [ArXiv]

    10. Locally Uniform Hashing
        Joint work with Lorenzo Beretta, Jonas Klausen, Jakob Bæk Tejs Houen, Mikkel Thorup
        FOCS'23, [ArXiv]

    9. InfiniFilter: Expanding Filters to Infinity and Beyond
        In order for contribution: Niv Dayan, Ioana O. Bercea , Pedro Reviriego , Rasmus Pagh
        SIGMOD'23, [video]
        Best Artifact Award

    8. An Extendable Data Structure for Incremental Stable Perfect Hashing
        Joint work with Guy Even
        STOC'22, [video]

    7. Dynamic Dictionaries for Multisets and Counting Filters with Constant Time Operations
        Joint work with Guy Even
        WADS'21, [ArXiv]
        Invited to the special issue of Algorithmica

    6. Upper Tail Analysis of Bucket Sort and Random Tries
        Joint work with Guy Even
         CIAC'21, [ArXiv]
        Invited to the special issue of Theoretical Computer Science

    5. A Dynamic Space-Efficient Filter with Constant Time Operations
        Joint work with Guy Even
        SWAT'20, [ArXiv]

    4. On the Cost of Essentially Fair Clusterings
        Joint work with Martin Groß, Samir Khuller, Aounon Kumar, Clemens Rösner, Daniel Schmidt, Melanie Schmidt
        APPROX'19, [ArXiv]

    3. Improved Bounds for the Traveling Salesman Problem with Neighborhoods on Uniform Disks
        CCCG'18, [ArXiv]

    2. Minimizing Uncertainty through Sensor Placement with Angle Constraints
        Joint work with Volkan Isler, Samir Khuller
        CCCG'16, [ArXiv]

    1. On Computing Maximal Independent Sets of Hypergraphs in Parallel
        Joint work with Navin Goyal, David G. Harris, Aravind Srinivasan
        SPAA'14, [ArXiv]
        Invited to the special issue of ACM Transactions on Parallel Computing