# One to More, More to One: Category-Aware Iterative Expert Training for Software Engineering Agents > Source: > Published: 2026-09-22 02:30:13+00:00 Repository-level software engineering (SWE) comprises heterogeneous task categories, whose progress under pooled agentic reinforcement learning can be uneven: gains in some categories coincide with regressions in others, while aggregate resolution obscures these changes. Motivated by this category s