https://chenyangsu.github.io/blog/ Notes on evaluating AI systems, building agents for science, and human genetics. en-us csu59@wisc.edu (Chen-Yang Su) https://chenyangsu.github.io/blog/optimism-in-the-face-of-uncertainty/ https://chenyangsu.github.io/blog/optimism-in-the-face-of-uncertainty/ Sun, 30 Aug 2026 12:00:00 +0000 reinforcement learning exploration research careers open science My MSc advisor Joëlle Pineau took the title of her commencement address from bandit algorithms. An action is worth taking not because its estimated reward is high, but because the uncertainty around it leaves room for it to be much better. https://chenyangsu.github.io/blog/the-problem-with-calling-models-open-or-closed/ https://chenyangsu.github.io/blog/the-problem-with-calling-models-open-or-closed/ Thu, 30 Jul 2026 21:12:40 +0000 artificial intelligence open weights AI safety AI regulation open science Anthropic is the notable exception among the major labs, and critics see protectionism from a company whose business depends on keeping its own models closed. Both interpretations can be true.