Djoerd Hiemstra 🍉
LightNews LightNews
banner
djoerd.idf.social.ap.brid.gy
Djoerd Hiemstra 🍉
@djoerd.idf.social.ap.brid.gy
120 followers 16 following 420 posts
Professor of Federated Search at Radboud University. Formerly known as @hiemstra @ https://mastodon.utwente.nl […]

🌉 bridged from ⁂ https://idf.social/@djoerd, follow @ap.brid.gy to interact
Posts Replies Media Videos
djoerd.idf.social.ap.brid.gy
New laptop sticker! Thank you, J.
Laptop with two old stickers: "Team OWSome", " DuckDB"; and a new sicker: "Generative AI? Nien danke" with a thumbs down in the style of "atomkraft? nein danke"
November 11, 2025 at 5:24 PM
djoerd.idf.social.ap.brid.gy
Impressive #dir2025 keynote presentation by Thomas Demeester: "Multimodal Health Data: From Representation to Causal Understanding"

https://informagus.nl/dir2025/keynote
Thomas on stage
October 27, 2025 at 10:41 AM
djoerd.idf.social.ap.brid.gy
Dutch-Belgian Information Retrieval workshop #dir3025 today in Nijmegen! Opening by the great Harrie Oosterhuis

https://informagus.nl/dir2025/schedule
Harrie on stage
October 27, 2025 at 10:07 AM
djoerd.idf.social.ap.brid.gy
Enorm goed verhaal van @FTM_nl!
Waarom zijn de huizen zo duur? De ezel uit koehandel!! meer geld in het spel: alles wordt duurder. Banken creëren letterlijk nieuw geld bij een hypotheek […]

[Original post on idf.social]
Kaarten van het spel "koehandel" met rechts de ezelkaart, waarbij de ezel een emmer geld in zijn bek heeft
October 23, 2025 at 5:13 AM
djoerd.idf.social.ap.brid.gy
Today's accomplishment: self-collected autumn piece
Wooden tray on wooden table top with pine apples, beans, berries, acorns, twigs, etc.
October 18, 2025 at 9:50 AM
djoerd.idf.social.ap.brid.gy
With a leaderboard! I am sixth with 28 ghost discoveres
Ghost hunt leaderboard: dj_Oerd: 28
September 26, 2025 at 6:08 PM
djoerd.idf.social.ap.brid.gy
Shout-out to Sascha Daeges from Dagstuhl for making the castles ghost hunt game: Wander through the castle to hunt QR-codes and ghosts appear on your phone. No need to install an app, no login. Excellent!
Screen shot of Dagstuhl ghost hunt app showing a cartoon ghost as in pacman: "Bravo! You just discovered your next Dagstuhl ghost.
September 26, 2025 at 6:05 PM
djoerd.idf.social.ap.brid.gy
Thank you, participants of the Dagstuhl Seminar: "Retrieval-Augmented Generation – The Future of Search?"

https://www.dagstuhl.de/25391
The traditional Dagstuhl photo of all participants standing on the castel's stairs: Everybody is smiling in the rain.
September 26, 2025 at 10:01 AM
djoerd.idf.social.ap.brid.gy
Ads in generated text: Can we block promotional text in LLM responses with Poopsy Cola? #dagstuhl
SadBoy Cola – 80s Style Fake Advertisement by LoopLounge.
September 25, 2025 at 8:06 AM
djoerd.idf.social.ap.brid.gy
@egonw @BIJ1 Suggestieve vraag: "Willen jullie meer of minder Marokaanse Nederlanders in de Tweede Kamer?" 😎 #tofikdibi
Foto van Tofik Dibi, de nieuwe premier van Nederland (bron: Wikipedia)
September 14, 2025 at 5:07 PM
djoerd.idf.social.ap.brid.gy
We demand the night! Sad but true: Women in the Netherlands fear they may not arrive safely at home when traveling alone at night.

https://wijeisendenachtop.nl
Poster on a window: "WIJ EISEN DE NACHT OP. Laat vrouwen veilig thuiskomen"
September 4, 2025 at 5:31 PM
djoerd.idf.social.ap.brid.gy
Great first day at the Media, Manipulation and Misinformation Workshop! #mmmw25

https://mmmworkshop.cs.ru.nl/
Philipp Schmid introducing the workshop
August 20, 2025 at 4:30 PM
djoerd.idf.social.ap.brid.gy
https://radio-map.com is an amazing site with internet radio broadcasters from all over the world; 640 in the Netherlands and Belgiumg
Map of the Netherlands with a big blue circle marked "640"
August 18, 2025 at 5:37 PM
djoerd.idf.social.ap.brid.gy
Lent-Nijmegen has a Rolling Stones street... 💋
Street name sign with explanation and photo of Stones
July 22, 2025 at 8:05 AM
djoerd.idf.social.ap.brid.gy
And now: The #sigir2025 workshop on Reaching Efficiency in Neural Information Retrieval
Slide with last nice logo
July 17, 2025 at 7:04 AM
djoerd.idf.social.ap.brid.gy
The Fab Four of Information Retrieval for Children! #sigir2025
Sole Pera presents work with Theo Huibers, Emiliana Murgia, and Monica Landoni
July 16, 2025 at 1:08 PM
djoerd.idf.social.ap.brid.gy
This is horrible: Iryna Gurevych discusses the role of "AI scientists" that execute the full scientific workflow. #sigir2025
Iryna on stage
July 16, 2025 at 7:27 AM
djoerd.idf.social.ap.brid.gy
Yubao Tang from University of Amsterdam presenting MINT RAG; and is hiring! (with Maarten de Rijke) #sigir2025
Yubao in front of screen QR code and conclusion with a kitten asking for questions
July 15, 2025 at 2:14 PM
djoerd.idf.social.ap.brid.gy
Me, BEFORE giving my poster presentation. #sigir2025
Smiling guy with rainbow sun glasses vaguely pointing at a poster
July 14, 2025 at 4:49 PM
djoerd.idf.social.ap.brid.gy
Me, BEFORE giving my poster presentation. #sigir2025
Smiling guy with rainbow sun glasses vaguely pointing at a poster
July 14, 2025 at 4:49 PM
djoerd.idf.social.ap.brid.gy
Linda Zeng presents at #sigir2025 while still a high school student(!), supervised by Yi Zhang: for the paper: Knowing You Don’t Know: Learning When to Continue Search in Multi-round RAG through Self-Practicing

https://github.com/ucscirkm/SIM-RAG
Linda on stage
July 14, 2025 at 10:32 AM
djoerd.idf.social.ap.brid.gy
#sigir2025 excellent reviewers
Excellen reviewer on screen
July 14, 2025 at 7:24 AM
djoerd.idf.social.ap.brid.gy
Nicola Ferro opening #sigir2025 : there's a low resource track!
Gigantic screen with tiny Nicola
July 14, 2025 at 7:13 AM
djoerd.idf.social.ap.brid.gy
Train trip to #sigir2025 starts with a train not going, to be replaced with a bus 🤔
Sign in Dutch: "To the NS bus" with a flag of Germany
July 12, 2025 at 4:56 PM
djoerd.idf.social.ap.brid.gy
Colleague @harrieo.bsky.social made this impressive poster of all Radboud U. contributions to #sigir2025
Informagus @ SIGIR 2025 Sunday: Heydar (doctoral consortium) Monday: Djoerd (short paper), Daria & Arjen (short paper), Santiago & Harrie et al. (short paper), etc., etc.
July 11, 2025 at 11:18 AM