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turnstone/docs
Patrick Buckley bf2dc04cb3 feat: UCB tree search for eval prompt optimization
Replace linear optimization chain with UCB1 evolution tree. Each
iteration selects the most promising node to extend, preventing
irrecoverable collapse from bad edits. Also adds improvement-based
delta feedback to the optimizer and optional holdout set separation.

Inspired by "Learning to Self-Evolve" (arXiv:2603.18620).
2026-03-23 17:09:22 -07:00
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