Is this Idea Novel? An Automated Benchmark for Judgment of Research Ideas

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• RINoBench is the first comprehensive benchmark for large-scale evaluation of research idea novelty judgments.method 95%
• RINoBench comprises 1,381 research ideas derived from and judged by human experts.method 90%
• LLM-generated reasoning for novelty judgments closely mirrors human rationales.result 85%
• LLM reasoning alignment with human rationales does not reliably translate into accurate novelty judgments.result 85%
• LLM novelty judgments diverge significantly from human gold standard judgments, even among leading reasoning-capable models.result 90%
• Manual judgment of research idea novelty through literature reviews is labor-intensive, subjective, and infeasible at scale.limitation 85%
• Current evaluation of automated novelty judgment approaches remains largely inconsistent and typically based on non-standardized human evaluations.limitation 80%
• RINoBench includes nine automated evaluation metrics designed to assess both rubric-based novelty scores and textual justifications.technical 90%

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