Sign in

Eleni Tzirita Zacharatou

@elenitz.bsky.social
293 followers 164 following 18 posts

Associate Professor (W2 tenure track) and Head of the "Spatial Analytics and Large-Scale Data Processing" group at the Hasso Plattner Institute @hpi.bsky.social. Previously at ITU Copenhagen, TU Berlin, and EPFL (PhD). heltzi.github.io

PostsRepliesMedia
Eleni Tzirita Zacharatou @elenitz.bsky.social · 17/09/2026
Last week I gave my inaugural lecture at #HPI and finally got my PhD hat 🎓 Thank you to everyone who made the day special! Here is a recap.
hpi.de
Prof. Eleni Tzirita Zacharatou delivers inaugural lecture at HPI
In her inaugural lecture, Prof. Eleni Tzirita Zacharatou shows how adaptive data systems can keep pace with an increasingly heterogeneous world. Learn more!
042
Eleni Tzirita Zacharatou @elenitz.bsky.social · 17/04/2026
After some time away from 🦋 Bluesky, here's a glimpse of what I've been up to recently. 👋 #EDBT2026
linkedin.com
Two chair roles, two papers, one top data conference: Prof. Eleni Tzirita Zacharatou on her key responsibilities at one of the top database conferences and balancing multiple demanding roles. ⚖️… | HP...
Two chair roles, two papers, one top data conference: Prof. Eleni Tzirita Zacharatou on her key responsibilities at one of the top database conferences and balancing multiple demanding roles. ⚖️ Fro...
040
Reposted by Eleni Tzirita Zacharatou
Pınar Tözün @pinartozun.bsky.social · 30/09/2025
📢📢 The September 2025 issue of SIGMOD Record is out, so is the Reminiscences column. Thank you, Viktor Leis, Anja Gruenheid, @senorcarbone.bsky.social, and @elenitz.bsky.social for the great contributions! pdf --> sigmodrecord.org/publications...
052
Eleni Tzirita Zacharatou @elenitz.bsky.social · 03/09/2025
I’m honored and grateful to be recognized as a Distinguished Reviewer for #VLDB2025. 🎉 Congrats to all the other Distinguished Reviewers and Associate Editors — great to be in such company!
050
Eleni Tzirita Zacharatou @elenitz.bsky.social · 29/08/2025
Sadly, I won’t be at #VLDB2025 🇬🇧, but Xenofon Chatziliadis will present our #ADMS paper on GPU-accelerated optimization for streaming systems. 🚀 📅 Mon, 9:00–9:30 (Moore Room, 4F) 📄 Paper: www.vldb.org/2025/Worksho... 🔗 Builds on NEMO (VLDB 2024): www.vldb.org/pvldb/vol17/...
020
Eleni Tzirita Zacharatou @elenitz.bsky.social · 17/07/2025
Thank you @bifold.berlin for the feature! @hpi.bsky.social #SpatialAnalytics #LargeScaleData #WomenInSTEM
bifold.berlin
HPI appoints BIFOLD fellow Eleni Tzirita Zacharatou as professor
Prof. Dr. Eleni Tzirita Zacharatou, BIFOLD Junior Fellow and former postdoctoral researcher in the DIMA group, has been appointed W2 Professor at the Hasso Plattner Institute, University of Potsdam. H...
0102
Eleni Tzirita Zacharatou @elenitz.bsky.social · 19/06/2025
This week, I had the pleasure of visiting #Snowflake's #Berlin office to share an overview of my past and ongoing #research. As you can see in the photos, I’m doing my best to live up to the stage presence of my cartoon #cat self 😀
030
Reposted by Eleni Tzirita Zacharatou
Soapbox Science Berlin @berlin-soapbox.bsky.social · 15/06/2025
City data speaks – and here's how to listen 🌆📊 Cities are full of hidden stories in traffic, noise, and crime data. Eleni Tzirita Zacharatou @elenitz.bsky.social turns raw numbers into visuals that reveal what’s really going on. #SoapboxScienceBerlin #WomeninScience #scicomm
095
Eleni Tzirita Zacharatou @elenitz.bsky.social · 02/06/2025
🌟 Looking forward to joining this fun and unique event. 🗓️ Sunday, June 15, 2025 🕒 3–7 PM 📍 Holzmarkt 25, Berlin Come say hi! #ScienceForEveryone #WomenInSTEM #WomenInScience #SoapboxScience #SciComm
084
Eleni Tzirita Zacharatou @elenitz.bsky.social · 18/04/2025
Check out Harry's podcast on our Sheet Reader parser!
022
Reposted by Eleni Tzirita Zacharatou
Haralampos Gavriilidis @handle.invalid · 18/04/2025
Parsing #Excel #spreadsheets at lightning speed — that’s exactly what we built SheetReader for!
162
Reposted by Eleni Tzirita Zacharatou
Pınar Tözün @pinartozun.bsky.social · 14/04/2025
📢 📢 Pamela Delgado (HES-SO, Switzerland) has a fully-funded PhD position on efficient GPU resource management for deep learning! My team @itu.dk is looking forward to collaborating with her in this project! For more info on the position, see the image and the link: www.jobup.ch/en/jobs/deta...
041
Eleni Tzirita Zacharatou @elenitz.bsky.social · 04/04/2025
Last week at #EDBT2025 in Barcelona was a blast! Gave an invited talk (thanks #Huawei!), moderated a DEI panel, and co-organized a DEI tutorial. Wrapped it all up with experiencing the stunning architecture and cultural scene in the city 🏛️🌞. #academia #conference #databases
040
Reposted by Eleni Tzirita Zacharatou
Akhil Arora @akhilarora.bsky.social · 18/03/2025
I am recruiting 2 PhD students for Fall'25 @csaudk.bsky.social to work on bleeding-edge topics in #NLProc #LLMs #AIAgents (e.g. LLM reasoning, knowledge-seeking agents, and more). Details: www.cs.au.dk/~clan/openings Deadline: May 1, 2025 Please boost! cc: @aicentre.dk @wikiresearch.bsky.social
cs.au.dk
Open positions and projects
### Open semester and Master's projects If you're an AU student looking for a semester project, a Bachelor project, or an MS thesis project, please refer to [this list](projects). ### Prospective PhD ...
03022
Eleni Tzirita Zacharatou @elenitz.bsky.social · 18/03/2025
Excited to serve as Program Co-chair for #HDMS 2025! We warmly welcome all members of the Greek database community to submit their work and join us in the beautiful city of Ioannina. Conference website: acmsigmod.gr/hdms/2025/
031
Reposted by Eleni Tzirita Zacharatou
Hasso-Plattner-Institut @hpi.bsky.social · 03/03/2025
🚀 Willkommen am HPI: Zwei neue Professorinnen für #KI und #Datenanalyse! 🎉 Das Institut wächst weiter und begrüßt Prof. Dr. Sandra Wachter im Bereich Künstliche Intelligenz und Prof. Dr. Eleni Tzirita Zacharatou mit ihrer Expertise im Forschungsfeld Datenanalyse. 🔗 hpi.de/artikel/zwei...
Portraits der neuen Professorinnen Sandra Wachter (rechts) und Eleni Tzirita Zacharatou (links).
0133
Eleni Tzirita Zacharatou @elenitz.bsky.social · 03/03/2025
I am excited to join the #HPI faculty in Potsdam, Germany, where I will lead the "Spatial Analytics & Large-Scale Data Processing" research group. Looking forward to collaborating with many great students and peers here! #SpatialAnalytics #LargeScaleData #NewJob
1192
Reposted by Eleni Tzirita Zacharatou
Stefania Dumbrava @sdumbrava.bsky.social · 17/02/2025
Registration open until 21/04 for the 2025 VLDB Summer School ☀️ 28-31/07 - University of Wroclaw 🇵🇱 We have great lecturers on privacy preserving data management, data analytics, distributed databases, cloud computing, graph data & data(base) theory. 👉 vldb-sc25.cs.uni.wroc.pl @vldb.bsky.social
063
Reposted by Eleni Tzirita Zacharatou
Pınar Tözün @pinartozun.bsky.social · 10/02/2025
📢📢VLDB26 (@vldb.bsky.social) will have a ShadowPC! Apply at forms.office.com/e/XYihKj4UKq by March 1! Great opportunity for folk who are new to the data management community & want to gain paper reviewing experience. More info at application form. Chairs: @zistvan.bsky.social, Tianzheng Wang, & I.
forms.office.com
Microsoft Forms
0116
Reposted by Eleni Tzirita Zacharatou
Pınar Tözün @pinartozun.bsky.social · 06/02/2025
📢📢 Have a PhD position on the IO-path of deep learning, co-funded by Innovation Fund Denmark. Selected candidate will be affiliated with Samsung Research Denmark and IT University of Copenhagen. Supervised by Vivek Shah, Javier González, and me. More details at www.linkedin.com/jobs/view/41...
linkedin.com
Samsung Semiconductor hiring Industrial PhD Placement in Copenhagen, Capital Region of Denmark, Denmark | LinkedIn
Posted 3:30:26 PM. Samsung Semiconductor Denmark Research (SSDR) is Europe's R&D hub for Samsung's Memory Division…See this and similar jobs on LinkedIn.
064
Eleni Tzirita Zacharatou @elenitz.bsky.social · 21/01/2025
New #BTW25 paper📍We enhance classic spatial indexes with a machine-learned search technique, boosting query performance by up to 53x. 🔗 Read more in our paper: heltzi.github.io/publications...
061
Eleni Tzirita Zacharatou @elenitz.bsky.social · 16/01/2025
Happy to be part of this great initiative, and excited to interact with even more community members in the future! 😊 #AIgrid
030
Eleni Tzirita Zacharatou @elenitz.bsky.social · 15/01/2025
Students can get particularly creative when asked to write a division query 😀 #SQL
010
Eleni Tzirita Zacharatou @elenitz.bsky.social · 14/01/2025
🌟 Promoting diversity, EDBT/ICDT 2025 🇪🇸 awards 5 students free conference registration 🌟 📢 Call: edbticdt2025.upc.edu?contents=di_... 🏆Awards: 5 grants for free registration (travel not included) 👉Apply here: forms.gle/6MefnqBHo3pF... 📅 Apply by: Feb 3, 2025 🌈 Results: Feb 14, 2025 Please share 😊
043
Eleni Tzirita Zacharatou @elenitz.bsky.social · 11/01/2025
🎉First paper of 2025! Great collaboration with Thanasis Georgiadis & Prof. Nikos Mamoulis. 🚀 We propose a new raster intervals approximation—lightweight, effective & tunable—delivering 3x speedup in spatial joins! 📖 link.springer.com/article/10.1... #vldbjournal #spatial #data
link.springer.com
Raster interval object approximations for spatial intersection joins - The VLDB Journal
Spatial join processing techniques that identify intersections between complex geometries (e.g., polygons) commonly follow a two-step filter-and-refine pipeline. The filter step evaluates the query pr...
051
Reposted by Eleni Tzirita Zacharatou
Stefania Dumbrava @sdumbrava.bsky.social · 09/12/2024
EDBT/ICDT now also has a BlueSky account: @edbticdt.bsky.social Preparations are well underway for the 2026 edition is Tampere, Finland 🇫🇮
0124