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FaVOR: LLM-Based Agentic Framework for Factor Mining via Empirical Validation

arXiv · AI, language, vision and robotics · article · Aug 31, 2026 · UTC

Traditional finance relies on experts to hand-craft factors through a principled process grounded in economic rationale. Recent LLM-based multi-agent systems have automated this process, scaling factor mining far beyond manual effort. However, these automated approaches optimize directly for returns and rarely check whether a generated factor still expresses the economic hypothesis that motivated it. We identify this inconsistency between mathematical form and economic meaning as a structural failure mode of return-oriented automation. The resulting factors blur the line between real signals a

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