ScoreFlow: Mastering LLM Agent Workflows via Score-based Preference Optimization

🤗 Upvotes: 12 | cs.CL

Authors:
Yinjie Wang, Ling Yang, Guohao Li, Mengdi Wang, Bryon Aragam

Title:
ScoreFlow: Mastering LLM Agent Workflows via Score-based Preference Optimization

Arxiv:
http://arxiv.org/abs/2502.04306v1

Abstract:
Recent research has leveraged large language model multi-agent systems for complex problem-solving while trying to reduce the manual effort required to build them, driving the development of automated agent workflow optimization methods. However, existing methods remain inflexible due to representational limitations, a lack of adaptability, and poor scalability when relying on discrete optimization techniques. We address these challenges with ScoreFlow, a simple yet high-performance framework that leverages efficient gradient-based optimization in a continuous space. ScoreFlow incorporates Score-DPO, a novel variant of the direct preference optimization method that accounts for quantitative feedback. Across six benchmarks spanning question answering, coding, and mathematical reasoning, ScoreFlow achieves an 8.2% improvement over existing baselines. Moreover, it empowers smaller models to outperform larger ones with lower inference costs. Project: https://github.com/Gen-Verse/ScoreFlow

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