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...

After some time away from 🦋 Bluesky, here's a glimpse of what I've been up to recently. 👋

#EDBT2026

📢📢 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...

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!

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/...

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...

Thank you @bifold.berlin for the feature!

@hpi.bsky.social

#SpatialAnalytics #LargeScaleData #WomenInSTEM

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 😀

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

🌟 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

Check out Harry's podcast on our Sheet Reader parser!

Parsing #Excel #spreadsheets at lightning speed — that’s exactly what we built SheetReader for!

📢 📢 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...

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

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 ...

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

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/

Portraits der neuen Professorinnen Sandra Wachter (rechts) und Eleni Tzirita Zacharatou (links).

🚀 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...

I’ll miss you, too! You were the best colleagues 😍 I’ll make sure to visit from time to time and would love to welcome you to HPI whenever you want!

At the same time, leaving the DASYA group @itu.dk is bittersweet. I am grateful for my time there and the amazing colleagues I was lucky to work with - I hope we can stay in touch!

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

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

📢📢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.

📢📢 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...

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...

Happy to be part of this great initiative, and excited to interact with even more community members in the future! 😊 #AIgrid

Students can get particularly creative when asked to write a division query 😀
#SQL

🌟 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 😊

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...

🎉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

EDBT/ICDT now also has a BlueSky account: @edbticdt.bsky.social Preparations are well underway for the 2026 edition is Tampere, Finland 🇫🇮