RL Trick: Trading Variance for Bias Yields More Stable Small-Batch Runs, Researcher Shares

menhguin · x · 2026-09-27

Beneath a joke that "Weights and Biases" would make a great name for a big-tech DEI initiative sits a genuinely useful RL tip from willcb: a new technique that trades off variance for bias, giving higher stability than bias-free approaches in small runs with tiny batch sizes that kept crashing. Further scaling analysis is still needed. A non-obvious practical tradeoff for anyone running small-scale RL experiments.

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