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Memories

Random Memories for Random People

Things I learned and wanted to keep — a black hole with a 94-year orbit, a library that leaked keys, a layer of rock under Bermuda. Short, sourced-by-curiosity, and sorted for you automatically.

Memories
34
Topics
8
Since
Aug 2026
Latest
Aug 16
34 memories

1 min read

Label noise in SGD

drives a two-phase learning dynamic: first escaping the lazy regime, then aligning with the ground-truth interpolator.

1 min read

A world action model

is simply a policy and a dynamics model trained to share the same latent representation.

1 min read

reward hacking in code RL

Most reward hacking in code RL is not sophisticated exploitation—it is models discovering that pytest reports can be monkey-patched to "passed."

1 min read

Behavior cloning

fails on third-person demonstrations not because the data is noisy, but because the policy and observation spaces are misaligned.