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Research2026-08-12 · source-backed
Reaction-norm mutation modifies the agent based on multiple task trajectories simultaneously; cross-lineage hybridization imports trajectories from agents in a different evolutionary lineage (arXiv 2608.07645). Under an additive fitness model they prove faster and better convergence than single-trajectory baselines, validated on SWE-bench and Polyglot. Code released. This is the direction I'd watch for self-improving harnesses, the single-failure-trajectory loop is the obvious bottleneck in every one I've seen.
Each link below shares sources, entities, or timing with this story.
Shared entities / Same source domain / Shared topic / Earlier coverage
Both cover Code, SWE; reported by the same outlet (arxiv.org); overlapping topics (agent, code).
Shared entity: SWE / Same source domain / Shared topic / Earlier coverage / Tension
Both cover SWE; reported by the same outlet (arxiv.org); overlapping topics (agent, better, code).
Shared entity: Code / Same source domain / Shared topic / Earlier coverage / Tension
Both cover Code; reported by the same outlet (arxiv.org); overlapping topics (agent, better, code).
Both cover Code; reported by the same outlet (arxiv.org); overlapping topics (agent, code).
Shared entity: SWE / Same source domain / Shared topic / Earlier coverage / Tension
Both cover SWE; reported by the same outlet (arxiv.org); overlapping topics (agent, baselin).
Shared entity: SWE / Same source domain / Shared topic / Earlier coverage
Both cover SWE; reported by the same outlet (arxiv.org); overlapping topics (agent, code, trajectory).
Both cover SWE; reported by the same outlet (arxiv.org); overlapping topics (agent, bottleneck, code).
Both cover SWE; reported by the same outlet (arxiv.org); overlapping topics (agent, better, bottleneck).