Mastodawn

GEPA optimizes prompts in compound AI systems by reading failed trajectories in natural language and editing the prompt of the module that caused the failure. Across six tasks it beats GRPO by 6% on average, up to 20%, with up to 35x fewer rollouts. Reflection extracts per-module diagnosis from a trajectory. GRPO collapses the same trajectory into one scalar and spreads it across every token.

https://benjaminhan.net/posts/20260513-gepa/

#AI #ICLR2026 #PromptOptimization #MetaCognition

GEPA: Reflective Prompt Evolution Can Outperform Reinforcement Learning – synesis

A reflective prompt optimizer that rewrites prompts from natural-language diagnoses of failed trajectories, outperforming GRPO and MIPROv2 on six tasks with up to 35x fewer rollouts.

synesis

Bastian Grossenbacher-Rieck Apr 29

A huge LEAP forward for graph learning and topological deep learning: Juan is taking about our recent ICLR work on learnable positional encodings.

#MachineLearning #ICLR2026

🎥: https://youtu.be/7aniG7esPWU?is=mksic04tFLviBKZJ

📝: https://openreview.net/forum?id=8XFPhByERc

LEAP: Local ECT-Based Learnable Positional Encodings for Graphs

YouTube

Ricardo Barros Lourenço Apr 26

It was great to meet with you @[email protected] . I hope you are enjoying these last days of #ICLR2026 and this gorgeous city 😊🇧🇷

Ricardo Barros Lourenço Apr 24

Not participating in #ICLR2026 this year (unfortunately) but I'm in town. Please ping me if you want to meet 😊🇧🇷

Collabora Apr 24

Scenes from a busy #ICLR2026 in Rio de Janeiro! We're excited to be connecting with researchers & exploring the latest advances in ML! 🇧🇷

#MachineLearning #AI #OpenSource

Gaël Varoquaux Apr 24

#ICLR2026 paper✨️: Quantifying epistemic uncertainty of Blackbox classifiers, and link to better decisions Calibration on steroids, qualifying full prediction uncertainty with no need for Bayes, and tuning individual decisions 👇

Gatsby Unit Apr 23

👋 Will you be at #ICLR2026?

Stop by our researchers' posters to learn more about their work!

Gautam Kamath Apr 23

Congratulations to the winners of the #ICLR2026 Outstanding Paper Award! It was an honour to chair the committee, the entire team did a great job. We recognized two outstanding papers and one honorable mention. Check out the blog post for more: blog.iclr.cc/2026/04/23/a...

Yliopistobotti Apr 22

https://bsky.app/profile/ellisinstitute.fi/post/3mk3dusz6bk2d Our researchers are at #ICLR2026 with the latest machine learning advances. Check them out April 23-27 in Rio de Janeiro and on our site ➡️ https://www.ellisinstitute.fi/ellis-institute-finland-at-iclr-and-aistats-2026

@iclr-conf.bsky.social @csaalto.bsky.social @univhelsinkics.bsky.social @ellis.eu @samikaski.bsky.social #ELLISFinland #yliopisto

ELLIS Institute Finland (@ellisinstitute.fi)

Our researchers are at #ICLR2026 with the latest machine learning advances. Check them out April 23-27 in Rio de Janeiro and on our site ➡️ https://www.ellisinstitute.fi/ellis-institute-finland-at-iclr-and-aistats-2026 @iclr-conf.bsky.social @csaalto.bsky.social @univhelsinkics.bsky.social @ellis.eu @samikaski.bsky.social

Bluesky Social

ELLIS Institute Finland Apr 22

Our researchers are at #ICLR2026 with the latest machine learning advances. Check them out April 23-27 in Rio de Janeiro and on our site ➡️ www.ellisinstitute.fi/ellis-instit... @[email protected] @[email protected] @[email protected] @[email protected] @[email protected]