iiinova — where your digital self keeps evolving

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Andreas Kipf @andreaskipf.bsky.social · 08/01/2026

I hope you've had a great start to the year! I'm excited to announce our blog. We're kicking things off with a look back at everything that happened in 2025. utndatasystems.github.io/blog/2025/re...

utndatasystems.github.io

Data Systems Lab | Launching Our Blog And Wrapping Up 2025

I'm super excited to launch our blog! We'll use this space to share what's happening in our lab, from research papers and systems to the day-to-day life of our team. To kick things off, let's look bac...

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Mihail Stoian @mihailstoian.bsky.social · 21/01/2026

Can your database system predict underprovisining before it even happens? Meet ◒ xBound, the very first framework for join size lower bounds. xBound tells you how many tuples your SQL query will produce *at least*. Brought to you by @microsoft.com Gray Systems Lab & @utndatasystems.bsky.social.

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Emily Tucker @emilyltucker.bsky.social · 06/05/2025

I love older papers. Lenstra and Kan, 1979 "Computational Complexity of Discrete Optimization Problems" Annals of Discrete Mathematics #orms

"we shall be happy to award a chocolate windmill to the first person..."

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Andi Zimmerer @andizimmerer.bsky.social · 05/05/2025

"The fastest way of processing data is to not process it." Our SIGMOD 2025 paper shows how Snowflake skips 99.4% of data with new pruning techniques for LIMIT, top-k, and JOIN queries. Blog: snowflakepruning.github.io Paper: arxiv.org/abs/2504.11540 @sigmod2025.bsky.social

snowflakepruning.github.io

Andi Zimmerer | Pruning in Snowflake: Working Smarter, Not Harder

Modern cloud-based data analytics systems must efficiently process petabytes of data residing on cloud storage. A key optimization technique in state-of-the-art systems like Snowflake is partition pru...

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Andi Zimmerer @andizimmerer.bsky.social · 04/03/2025

The first day of the BTW Conference in Bamberg is coming to an end. Some personal favorites: - Ismail's talk on Pruning in Snowflake - @stefan-grafberger.com's talk on what-if analysis in ML pipelines and automatically patching ML pipelines in the background - Observe Inc's presentation

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Stefan Grafberger @stefan-grafberger.com · 07/02/2025

Please help spread the word by reposting! We've just created the official DEEM Workshop account: @deem-workshop.bsky.social

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Andi Zimmerer @andizimmerer.bsky.social · 26/02/2025

My very first paper got accepted to @sigmod2025.bsky.social! Yay! Means I'll be playing a home game in Berlin

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Andi Zimmerer @andizimmerer.bsky.social · 10/02/2025

Reading cacm.acm.org/blogcacm/21s... makes me think that Rust was just a giant research project and valuable findings are now being streamed back into C++, making them usable to a broader audience.

cacm.acm.org

21st Century C++ – Communications of the ACM

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Andi Zimmerer @andizimmerer.bsky.social · 04/02/2025

My professor jokingly threatened me that I would get fired if my VO2 Max is too low. After a run with him it's at 58 now. I guess I can continue my PhD 😋

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Andi Zimmerer @andizimmerer.bsky.social · 29/01/2025

The Nuremberg Data Systems Lab is now on Bluesky 🙌 @utndatasystems.bsky.social

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Andi Zimmerer @andizimmerer.bsky.social · 15/01/2025

In academia, everyone always has a Colleague Working On Exactly This Problem. I still have to find one. Applications open.

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Kostas Stefanidis @tokost.bsky.social · 14/01/2025

Exciting News! 🎉 #Tampere will host EDBT/ICDT 2026! ✨ Even before the 2025 edition, the important dates are already out: 📅 Round 1 starts on: February 5 for EDBT Papers March 13 for ICDT Papers edbticdt2026.github.io We can’t wait to see your great submissions and welcome you to Tampere! 🙌

edbticdt2026.github.io

EDBT/ICDT 2026 Joint Conference - 24th March - 27th March, 2026 - Tampere, Finland

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Matthias Boehm @matthiasboehm7.bsky.social · 04/01/2025

The @sigmod2025.bsky.social Programming Contest goes into another round. We (Bo Tang, Tilmann Rabl, and myself) just published the timeline and task overview: sigmod-contest-2025.github.io/index.html Thanks to Carlo Curino and @microsoft.com for the continued support.

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Dr. Stephanie @punkrockscience.bsky.social · 12/12/2024

If I’m ever a professor again, I want to give a graduate seminar, topics to include: - how not to say stupid shit about fields outside your expertise - what is your expertise, anyway? - how not to be an insufferable bore - your PhD doesn’t make you a better person: coping with that Other ideas?

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Andi Zimmerer @andizimmerer.bsky.social · 12/12/2024

I love how dedicated some students are. They are supposed to create a 5min video about a topic and one of them sends me their slides for review. 15(!) detailed(!) slides(!)

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Andi Zimmerer @andizimmerer.bsky.social · 01/12/2024

I proudly sneaked in an example about nature conservation into a database research paper 🌳

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