Our reproducibility paper "Ranked List Truncation: From Retrieval to Re-ranking" w/ Negar Arabzadeh Arian Askari Mohammad Aliannejadi Maarten de Rijke got accepted at #SIGIR2024 SIGIR 2025 We show query-specific re-ranking depths can optimize effectiveness/efficiency trade-offs in LLM-based re-ranking

Maarten de Rijke Maarten de Rijke now gives the first KvR Keynote Speech entitled "Explorations in Transparency" #ecir2024

Amin Abolghasemi presenting an interesting metric for measuring gender bias in IR (best IR4good paper) ECIR2024 #ECIR2024

I am in this photo, but hidden behind my paper🕵️‍♀️

I had an awesome time at #ECIR2024 in Glasgow. Always my favourite conference 💚🔎. Thanks a lot to the organizers; well done!! And to my students, for their great papers and presentations.

Computational Linguistics in the Netherlands (CLIN) is coming to Leiden this year! Jointly organized on August 30 by 📚🧠🗣LUCL, Leiden Computer Science and Leiden Centre for Digital Humanities. We invite everyone to submit an abstract and present a poster. ➡️ clin34.leidenuniv.nl #NLProc #CLIN34

Weekly roundtable* meeting of our group Text Mining and Retrieval Leiden ✌️🤗. It was time for a more or less complete group picture. (* no longer at a round table after the move to a new building)

This afternoon, Arian Askari gives a presentation in the Search Engines Afternoon (SEA) meeting on "LLMs for Data Augmentation in IR" He will present his 2023 CIKM and EMNLP papers on synthetic document generation. Registration: meetup.com/sea-search-eng…

Last Friday, we had a visit by Leif Azzopardi, who presented the paper "Information Seeking Challenges of Socially Responsible Consumers" dl.acm.org/doi/10.1145/36… in our group meeting.

On Monday, June 3rd (16.15, Academy Building) I read my inaugural lecture "Is the search engine of the future a chatbot?"🔎🤖, with which I formally accept my position of professor at Leiden University The lecture is public, but registration is needed: universiteitleiden.nl/en/events/2024…

We have a new group member: Tessa Verhoef. Tessa has been an assistant professor at Leiden Computer Science since 2017, and her work has is related to our group's research. sites.google.com/view/tessa-ver… She is in the most recent episode of Computers don't byte: open.spotify.com/episode/7kIvJp…

📣📣 Check out ESSIR 2024's program! We start with Transformers, Foundation Models, and Finetuning, followed by Generative IR, LLMs, (Neural) RecSys, LTR, Evaluation, Explainability, and Fairness. ESSIR features FIDA and a week-long hackathon! 👩🏻‍💻 2024.essir.eu/attending/scho…

"Why search engines and chatbots are becoming more alike" 🔎 🤖 , interview with me on the Leiden University website. universiteitleiden.nl/en/news/2024/0…

Photos of my inaugural lecture last Monday Universiteit Leiden. Thanks to everyone for being there, showing interest, kind words and sweet cards 💚 (last photo: group members and graduates from our research group Text Mining and Retrieval Leiden)

The slides of my #ESSIR2024 lecture are here: drive.google.com/file/d/1HPUxD4… My lecture was rather introductory; Guido Zuccon followed up with an (excellent!) more advanced lecture. Thanks, Mohammad Aliannejadi for inviting me!

The 34th edition of Computational Linguistics in The Netherlands (the Dutch-Belgian #NLProc conference) will be held Universiteit Leiden on August 30 The list of accepted abstracts is on the website and registration is open for everyone interested 💬 #clin34 clin34.leidenuniv.nl

10 days until #CLIN34! The 34th edition of Computational Linguistics in the Netherlands, held at Universiteit Leiden this year. We present the program on clin34.leidenuniv.nl Registration is still possible!

#CLIN34 in Leiden is ongoing! We have around 230 participants. Jelena and Gijs are kicking off the plenary session.

Posters from our group during the first poster session at CLIN #CLIN34

More posters from our group during the poster sessions at CLIN #CLIN34