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Arman Cohan

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#artificial intelligence Preprint Sep 2026

BackTrend: Evaluating Scientific Weak-Signal Prediction via Backward Reconstruction

BackTrend is introduced, a retrospective benchmark in which, given a mature target topic and a temporal evidence constraint, systems must recover two types of precursors: problem-space signals, underrecognized research problems, and solution-space signals, emerging methods for known problems.

Xiao Zhou, Yi-Lun Zhao, Owen Jiang et al. · 0 citations
#artificial intelligence Review Sep 2026

How Good Are Frontier Models at Physics? Expert Re-Grading Reveals Broken Evaluations and Near-Saturation of Leading Benchmarks

Evaluating frontier models on six widely used physics benchmarks and auditing them with experts suggests that current benchmarks substantially understate frontier models'ability to solve well-posed physics problems.

Ali Ansari, Hao-Ran Sun, Andy Zeyi Liu et al. · 0 citations
#natural language process... Preprint Aug 2026

Small Language Models as Judges for Rubric-Based Reinforcement Learning

This work studies whether smaller language models can serve as efficient and reliable rubric-based judges, and compares three ways of extracting criterion-level judgments from small models: Generative verdicts, Yes/No Logprob margins, and Probe judges.

Feng-Yu Xie, Yilun Zhao, Bingsen Chen et al. · 0 citations
Conference Open access 2026

MMSciCode: Real-world Evaluation of Multilingual Multi-Discipline Scientific Research Coding

We introduce MMSciCode, a comprehensive expert-level, multilingual multi-discipline benchmark for evaluating foundation models in scientific code generation. It includes 624 expert-annotated research coding problems spanning six core scientific disciplines. Compared to prior benchmarks, MMSciCode features three key adv...

Xue Xia, Zheyuan Yang, Arman Cohan et al. · 1 citation

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