July 30, 2025
Lyon, France (colocated with COLT 2025)
https://fopt-workshop.github.io/

Submission deadline: May 19, 2025

This COLT 2025 workshop seeks to explore the theoretical and practical aspects of the post-training of LLMs, across a diversity of domains and abstractions. The workshop aims to bring together experts from diverse fields including theoretical reinforcement learning, optimization, statistical learning theory, as well as more empirical directions, to identify critical research opportunities.

As a part of FoPt 2025, we invite abstract submissions to a single non-archival track. See our call for abstracts for more details. The submission deadline is Monday, May 19th, 2025.

June 30 – July 4, 2025
Lyon, France
https://learningtheory.org/colt2025/wtc.html

Submission deadline: April 18, 2025

The 38th Annual Conference on Learning Theory (COLT 2025) will dedicate a day during the main conference program (June 30 – July 4) exclusively to contributed and invited (1) workshops, (2) tutorials, and (3) community-building events (e.g., affinity workshops, mentoring activities, socials). We invite proposals for these in-person events: please submit your proposal submit by email by April 18th AoE (see the call for more details).

April 14-16, 2025
Online
https://waldo-workshop.github.io/2025.html

On behalf of the organizers – Guy Blanc, Quanquan Liu, Shivam Nadimpalli, Samson Zhou – we would like to invite you to the Workshop on Algorithms for Large Data (Online) 2025, which will be from Monday, April 14th to Wednesday, April 16th. We are pleased to host a fantastic set of speakers giving research talks and due to generous funding from SIGACT, registration is free and all are welcome! Please register by April 7, 2025 for access to the virtual platform. In addition, we will also feature poster sessions on Monday and Wednesday. For more details, please visit https://waldo-workshop.github.io/2025.html. We hope you will join us!

March 17-21, 2025
University of Warwick
https://warwick.ac.uk/fac/sci/maths/research/events/2024-2025/algebraiccomplexity/

Algebraic Complexity Theory is a vibrant field that has been seeing a tremendous amount of activity in the recent years. Its classical questions have been interwoven with deep questions from algebraic geometry, invariant theory, and representation theory, with recent exciting connections to metacomplexity and proof complexity. The workshop brings together experts from these fields to discuss the current state of the art, discover new connections, and set the directions for the future. Each plenary speaker will explain a recent result and break down its main ideas to a level that is accessible for the mathematically diverse audience. Remote participation via MS Teams is possible.

July 21-23, 2025
New Brunswick
http://dmac.rutgers.edu/events/details?eID=3156

This workshop titled, “Hardness of Approximation in P” is part of a larger DIMACS Special Focus on Fine-Grained Complexity. The workshop will feature multiple tutorials and is primarily aimed at researchers and graduate students in complexity theory. Limited funding is also available for students. Registration is free but required.

March 31 – April 4, 2025
Ruhr University Bochum, Germany
https://qi.rub.de/wact

The 8th edition of the Workshop on Algebraic Complexity Theory will be held on March 31-April 4, 2025 at Ruhr University Bochum, Germany. This workshop will bring together experts and junior researchers in the vibrant field of algebraic complexity theory and related topics. Attendance is free of charge, but registration is required. Please see the website for more information.