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Reposted by Eleni Tzirita Zacharatou

Pınar Tözün @pinartozun.bsky.social · 10d

📢📢 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...

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Sep 3

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!

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Aug 29

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/...

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jul 17

Thank you @bifold.berlin for the feature!

@hpi.bsky.social

#SpatialAnalytics #LargeScaleData #WomenInSTEM

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...

www.bifold.berlin

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jun 19

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 😀

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Reposted by Eleni Tzirita Zacharatou

Soapbox Science Berlin @berlin-soapbox.bsky.social · Jun 15

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

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jun 2

🌟 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

Soapbox Science Berlin @berlin-soapbox.bsky.social · Jun 2

To start the week, let's introduce another wonderful speaker: Dr Eleni Tzirita Zacharatou ✨

She is an Assistant Professor at the @hpi.bsky.social

This is a portrait of Dr Eleni. She is inside a building which is visible in the background of the picture, blurred

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Apr 18

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

Haralampos Gavriilidis @harrygav.bsky.social · Apr 18

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

DuckDB @duckdb.org · Apr 18

📢 The fifth and final episode of the “DuckDB in Research” podcast series is out!

Haralampos Gavriilidis | SheetReader: Efficient spreadsheet parsing

🎧 Apple: podcasts.apple.com/us/podcast/h...

🎧 Spotify: open.spotify.com/episode/2CRR...

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Reposted by Eleni Tzirita Zacharatou

Haralampos Gavriilidis @harrygav.bsky.social · Apr 18

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

DuckDB @duckdb.org · Apr 18

📢 The fifth and final episode of the “DuckDB in Research” podcast series is out!

Haralampos Gavriilidis | SheetReader: Efficient spreadsheet parsing

🎧 Apple: podcasts.apple.com/us/podcast/h...

🎧 Spotify: open.spotify.com/episode/2CRR...

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Reposted by Eleni Tzirita Zacharatou

Pınar Tözün @pinartozun.bsky.social · Apr 14

📢 📢 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...

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Apr 4

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

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Reposted by Eleni Tzirita Zacharatou

Akhil Arora @akhilarora.bsky.social · Mar 18

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

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 ...

www.cs.au.dk

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Mar 18

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/

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Reposted by Eleni Tzirita Zacharatou

Hasso-Plattner-Institut @hpi.bsky.social · Mar 3

🚀 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).

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Mar 3

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!

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Mar 3

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!

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Mar 3

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

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Reposted by Eleni Tzirita Zacharatou

Stefania Dumbrava @sdumbrava.bsky.social · Feb 17

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

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Reposted by Eleni Tzirita Zacharatou

Pınar Tözün @pinartozun.bsky.social · Feb 10

📢📢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.

Microsoft Forms

forms.office.com

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Reposted by Eleni Tzirita Zacharatou

Pınar Tözün @pinartozun.bsky.social · Feb 6

📢📢 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...

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.

www.linkedin.com

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jan 21

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...

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jan 16

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

BIFOLD Berlin Institute for the Foundations of Learning and Data @bifold.berlin · Jan 16

We thank all #AIgrid mentors for their commitment to the next generation of #AI #researchers. BIFOLD proudly announce that our scientists, Begüm Demir (RSG Lead) and Eleni Tzirita Zacharatou ( BIFOLD fellow), are taking on mentorship roles.

www.linkedin.com/posts/ai-gri...

@elenitz.bsky.social

AI Grid on LinkedIn: #artificialintelligence #computerscience #datamanagement #dataanalysis…

🌟 Meet 4 of our AI Grid Mentors! 🌟 At AI Grid, we are proud to have some of the leading minds in #ArtificialIntelligence as mentors in our network. Today…

www.linkedin.com

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jan 15

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

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jan 14

🌟 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 😊

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Eleni Tzirita Zacharatou @elenitz.bsky.social · Jan 11

🎉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

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...

link.springer.com

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