Eleni Tzirita Zacharatou

Assistant Professor

IT University of Copenhagen

Office: 4E09

Rued Langgaards Vej 7

2300 København S

elza@itu.dk

    • News

    [11.2024]
    New paper "Raster Interval Object Approximations for Spatial Intersection Joins" accepted at the VLDB Journal. Here is the Arxiv preprint.
    [08.2024]
    Attending VLDB 2024 in Guangzhou, China! We will present our research paper "Efficient Placement of Decomposable Aggregation Functions for Stream Processing over Large Geo-Distributed Topologies“. I will also participate in a panel on “Success in the Ph.D. Journey” at the VLDB PhD Workshop, and a PhD Mentoring Session. Looking forward to connecting with fellow attendees!
    [07.2024]
    July was the month of academic adventures and exchanges. After visiting BIFOLD to give two talks - one about recent work and one where I shared some advice as an early-career academic - I spent an enriching week in Cluj-Napoca attending the VLDB Summer School and delivering a lecture on Spatial Data Management Systems.
    [05.2024]
    Happy to serve as Diversity and Inclusion chair for one more year at EDBT 2026.
    [04.2024]
    New paper "Analysis of Geospatial Data Loading" accepted at the DBTest 2024 Workshop (in conjunction with SIGMOD).
    [03.2024]
    Our demo paper "Multi-Backend Zonal Statistics Execution with Raven" was accepted at SIGMOD 2024!
    [03.2024]
    I have accepted the invitation to serve as Proceedings co-chair for SIGMOD 2025. Looking forward to collaborating with the organizing board.
    [02.2024]
    Good news! Our paper "Efficient Placement of Decomposable Aggregation Functions for Stream Processing over Large Geo-Distributed Topologies“ has been accepted for publication at PVLDB.
    [02.2024]
    I am an invited speaker at the VLDB Summer School 2024. Looking forward to visiting Cluj-Napoca in July. If you are a student, consider applying.
    [01.2024]
    We summarized the discussions and insights from the ICDE'22 panel on Spatial and Temporal Data Management in this article that just appeared on the Data Engineering Bulletin.
    [12.2023]
    Joined both SIGMOD's and VLDB's 2025 PC.
    [11.2023]
    Talking at the HPI-TU Darmstadt Joint Database Systems Seminar was fun.
    [09.2023]
    New preprint available on Arxiv: Enhancing In-Memory Spatial Indexing with Learned Search.
    [09.2023]
    Happy to present my research at the NERDS Seminar.
    [08.2023]
    Martin presented our work on making sketching on FPGAs more resource-efficient at VLDB. Here you can find a recording of his talk. For more details, you can read our paper.
    [08.2023]
    New preprint available on Arxiv: APRIL: Approximating Polygons as Raster Interval Lists.
    [08.2023]
    Happy to become an AI Grid Mentor.
    [07.2023]
    I am honoured to serve as a Diversity and Inclusion Co-chair for EDBT 2025.
    [06.2023]
    I serve as PC Member of ICDE 2024 (Demo track) and LocalRec 2023.
    [04.2023]
    I serve as PC Member of DRAGSTERS 2023.
    [03.2023]
    Looking forward to attend EDBT in Ioannina, Greece, where I will also chair the session on Spatial & Temporal Data Management.
    [03.2023]
    Xenofon Chatziliadis will present our workshop paper at BTW in Dresden.
    [02.2023]
    I am delighted to have served as a member of the PhD thesis committee for Martin Kiefer at TU Berlin. This was my first time being on a thesis committee! Here is a photo with the succesful candidate.
    [01.2023]
    Our paper "SheetReader: Efficient Specialized Spreadsheet Parsing“ has been accepted for publication in the Information Systems Journal. You can also check out our open source implementation here - it has been downloaded almost 5K times so far.
    [12.2022]
    Good end-of-the-year news! Our paper "Optimistic Data Parallelism for FPGA-Accelerated Sketching“ has been accepted for publication at PVLDB.
    [10.2022]
    I serve as PC Member of SIGMOD 2024.
    [09.2022]
    I am very honored to receive the VLDB 2022 Distinguished Reviewer Award.
    [09.2022]
    I will give a talk at the DIREC Seminar 2022, in Aarhus, Denmark.
    [08.2022]
    New paper "Spatio-Temporal Graph Convolutional Network for Stochastic Traffic Speed Imputation" accepted at SIGSPATIAL 2022.
    [07.2022]
    I serve as PC member of BTW 2023 and VLDB PhD Workshop 2023.
    [06.2022]
    New demo paper "Satellite Image Search in AgoraEO" accepted at VLDB 2022. Here you can watch a video of the demo.
    [05.2022]
    New short paper "In-Place Updates in Tree-Encoded Bitmaps" accepted at SSDBM 2022.
    [05.2022]
    Happy to participate in the panel session on Spatial and Temporal Data Management at ICDE 2022.
    [04.2022]
    I serve as PC member of TDIS 2022.
    [03.2022]
    I am thrilled to join the IT University of Copenhagen (ITU) as an Assistant Professor in May 2022.
    [02.2022]
    I serve as PC Member of VLDB 2023.
    [01.2022]
    New paper "Efficient Specialized Spreadsheet Parsing for Data Science" accepted at DOLAP 2022.
    [12.2021]
    I serve as PC Member of SIGMOD 2023.
    [11.2021]
    I serve as Proceeding Chair of DEBS 2022.
    [11.2021]
    I talked at the DataTalksClub podcast about my job as a postdoctoral researcher. Here you can find the link to the podcast.
    [09.2021]
    I gave a talk on "AgoraEO" at the Geo-Information Processing Department of the University of Twente, Netherlands. Here you can watch a recording of the talk.
    [08.2021]
    Happy to participate in the round table session on Spatio-temporal Data System at VLDB 2021.
    [07.2021]
    Very honored to be selected as a BIFOLD Junior Fellow.
    [06.2021]
    I serve as a Reviewer for the VLDB Journal and the Knowledge and Information Systems (KAIS) Journal.
    [06.2021]
    New paper "Monitoring of Stream Processing Engines Beyond the Cloud: an Overview" accepted at VLIoT 2021.
    [05.2021]
    A medium post on our recent work that proposes using distance-bounded spatial approximations to exploit modern hardware and accelerate spatial queries.
    [05.2021]
    New paper "Agora-EO: A Unified Ecosystem for Earth Observation -- A Vision For Boosting EO Data Literacy --" accepted at BiDS 2021.
    [04.2021]
    I serve as PC Member of VLDB 2022, SIGMOD 2022, EDBT 2022, and AIMLSystems 2021.
    [04.2021]
    New paper "GeoBlocks: A Query-Cache Accelerated Data Structure for Spatial Aggregation over Polygons" accepted at EDBT 2021.
    [03.2021]
    New paper "Towards Resilient Data Management for the Internet of Moving Things" accepted at BTW 2021. Here you can watch a recording of the talk.
    [10.2020]
    New paper "The Case for Distance-Bounded Spatial Approximations" accepted at CIDR 2021. Here you can watch a recording of the talk.
    [08.2020]
    I am co-chairing the BOSS 2020 Workshop (co-located with VLDB). Check out our website for videos, slides, and further material on cool open source systems.