REVISE Optimizes Agent Workflow Recovery with Validity-Guided Revisions

Agent workflows, especially those involving concurrent execution, face a fundamental trade-off when online revisions occur: ensuring correctness versus maintaining efficiency. Current recovery strategies are often coarse-grained, either discarding all ongoing work for correctness or risking stale states by reusing potentially invalid progress. This leads to wasted computational effort or compromised output quality. REVISE offers a more sophisticated solution by providing a validity-guided runtime for fine-grained recovery. When a revision is introduced, REVISE precisely identifies the affected work by analyzing data and control dependencies within the partially executed workflow DAG. It then stops only the invalid work, preserves any valid progress beyond the initial conflict, and recomputes only the necessary affected regions. This approach significantly reduces redundant computations, as demonstrated by cutting model calls by 40.6-56.0% compared to full restarts and improving SLO goodput, ensuring both correctness and efficiency in dynamic agent environments.