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S. Welleck

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#artificial intelligence Preprint Oct 2026

ReuF2F: Benchmarking Coding Agents on Formalized Undergraduate Research Problems

ReuF2F is introduced, a Lean 4 benchmark of 244 formalized open problems drawn from Research Experiences for Undergraduates (REU), spanning entry-level open research problems across a broad range of mathematical subfields and adopts a standard coding-agent evaluation setting.

Ze-Yu Zheng, Yi-Yan Liu, Yu-Yang Zhao et al. · 0 citations
#artificial intelligence Preprint Apr 2026

Explorable Proofs: Making Written Proofs Explorable by Grounding Them in Formal Representations

It is argued that grounding explanations in a formalized representation enables interactive affordances beyond what static text supports, and is instantiated for mathematical proof comprehension with explorable theorems, a system that uses LLMs to translate a theorem and its written proof into Lean, a programming langu...

Hita Kambhamettu, Will Crichton, S. Welleck et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Into the Unknown: Benchmarking AI agents on open scientific research problems

Can AI agents carry out research on open scientific problems? We introduce Into the Unknown, a benchmark that provides an agent with a science paper along with a research direction to pursue and tasks it to write a follow-up paper. We work with scientists at US Department of Energy (DOE) national laboratories, who each...

Seungone Kim, Jia-Yi Geng, Young-Jun Lee et al. · 1 citation
Review Sep 2026

Report of the 8th LSVOS Challenge: Complex and Multimodal Video Object Segmentation

Across the nine leading solutions, foundation segmentation models are combined with target-aware memory, multimodal reasoning, explicit target-existence verification, agentic interaction, and corrective tracking, illustrating a broader transition from single-model mask propagation toward modular pipelines that reason a...

Chang Liu, Heng-Hui Ding, Ling-Yi Hong et al. · 0 citations

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