# HSPR: Recovering Software-Agent Benchmark Scores via Hierarchical Posterior Inference > Source: > Published: 2026-10-20 05:00:10+00:00 Evaluating software agents on a full benchmark is expensive. A small task subset can preserve agent rankings while yielding inaccurate scores. Historical responses provide useful structure, but tasks with identical source responses can have different outcomes for a new target agent. We introduce Hie