Back from a busy week at #RecSys2026 in Minneapolis 🇺🇸 Three oral presentations, lots of great conversations, and plenty of new ideas to take home!

This is a really interesting example of expert-mediated/expert-in-the-loop #recsys, developed in collaboration with those experts. Also relevant to one of the Qs we got on our #RecSys2026 participatory design talk! www.lenfestinstitute.org/solutions-re...

Bye bye #RecSys2026! Thanks for a great week of research, presentations, networking, inspiration, and an overall great #recsys vibe.

Happy to be heading home and looking forward to a few less intense days, but also already looking forward to #RecSys2027.

Thanks @recsys.bsky.social!

The #BEYOND2026 workshop at @recsys.bsky.social is in full swing - starting with a keynote by Joe Konstan!

We are honored to have Joe sharing his perspectives about the recommender systems - looking back + forward!

beyondrecsys.github.io/2026/
#RecSys2026 @alansaid.com @evazangerle.bsky.social

The #RecSys2026 main conference closed today. Thank you, Thorsten Joachims, for the closing keynote, and congratulations to the Women in RecSys Journal Award winners.

Next year: #RecSys2027 in Honolulu, August 23 to 27. See you all then!

Day 3 @recsys.bsky.social:

A highlight of RecSys is hearing directly from builders how YouTube , eBay, and DisneyPlus build under the hood.

Beyond typical two-tower setups, YouTube integrated an LLM-driven user embedding pipeline.

P.S It's already live in the US!
#RecSys2026

@recsys.bsky.social
We attac, we protec, but most importantly we recc! #ACM #RecSys2026
Tutorial « Composing Agents, Compounding Risks » dl.acm.org/doi/10.1145/...
Poster « Attacking and Defending Multi-Agent Collaborative Filtering Systems Through Connectivity » dl.acm.org/doi/10.1145/...

@recsys.bsky.social
Session 8A: Generative Recommendation: Retrieval, Ranking & Content Generation at #ACM #RecSys2026
Join us for presentations: recsys.acm.org/recsys26/ses...

@recsys.bsky.social
Session 8B: Evaluation, Reproducibility, and Benchmarks at #ACM #RecSys2026
Join us for presentations: recsys.acm.org/recsys26/ses...

@recsys.bsky.social
Session 7B: Health, Society and Mobility Applications
Join us for presentations: recsys.acm.org/recsys26/ses... at #ACM #RecSys2026

@recsys.bsky.social
Session 7A: Online Experimentation & Exploration
Join us for presentations: recsys.acm.org/recsys26/ses... at #ACM #RecSys2026

Day 2 of #RecSys2026 opened with the RecSys 20th Anniversary Presentation. The first RecSys was also held in Minnesota, in 2007.

Six paper sessions and the Day 2 posters followed.

Tomorrow is the last day of the main conference.

Program: recsys.acm.org/recsys26/rec...

@recsys.bsky.social
Session 4B: Fairness, Privacy & Safety
Join us for presentations: recsys.acm.org/recsys26/ses... at #ACM #RecSys2026

@recsys.bsky.social
Session 4A: Agentic Recommendation & Autonomous Optimization
Join us for presentations: recsys.acm.org/recsys26/ses... at #ACM #RecSys2026

Also presenting our paper with Xiaohongshu this afternoon during Session 5A: Industrial Ranking, CTR & Scalable Models! #RecSys2026

Day 2 @recsys.bsky.social:

Spent today exploring ad rec systems: predicting CTR, CPC to submit optimal bids tackling privacy challenges.

Great chats with people from Dable, Moloco and Teads.

Fascinating to see how market scale drives deep tech innovation here.
#RecSys2026

This morning at #RecSys2026, I will be stepping in as an emergency proxy presenter for Ruilin Yuan et al., authors of the long paper “GTP: Mitigating Popularity Bias in PLM-based Sequential Recommendation via Group-Aware Token Pruning,” since they unfortunately couldn’t make it to the conference.

@recsys.bsky.social Sing along with the Backstreet Boys (!?) and Professor Alain Starke @alainstarke.bsky.social at #ACM #RecSys2026 !!!

@recsys.bsky.social ACM Conference on Recommender Systems #RecSys2026 Main Conference Day 2: RecSys 20th Anniversary Presentation

Proud that this thing we started in 2010 that grew into what is not the #recsyschallenge is now highlighted as one of the key community events of @recsys.bsky.social
2010.recsyschallenge.com #recsys2026 #recsys2010