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Abhranil Chandra

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#artificial intelligence Preprint Oct 2026

Towards Continual Learning: Mitigating Forgetting With Subspace Tuning

Large language models (LLMs) acquire new skills through fine-tuning, but it can destroy capabilities they already have: catastrophic forgetting remains a central obstacle to continual learning in LLMs. Recent works connect forgetting to how far, and along which directions, fine-tuning moves the weights. On-policy metho...

Arnav Chavan, Kusha Sareen, Rishabh Tiwari et al. · 0 citations
#artificial intelligence Preprint Oct 2026

TheoPhysEval: Assessing AI agents at autonomous theoretical physics problem solving

We present a suite of 50 unpublished research-level theoretical physics problems with verifiable answers. Without AI assistance, a typical problem in our collection could be solved by a world expert in about a day or less but would take considerably longer for experts in adjacent specialties. We test the ability of off...

A. Chandra, Aaghaz Mahajan, A. Sanyal et al. · 0 citations

Hierarchical Experimentalist Agents

HExA shows that learning through active experimentation can help agents discover useful knowledge, acquire reusable skills, and make efficient progress on novel long-horizon tasks.

Abhranil Chandra, Sankaran Vaidyanathan, Utsav Dhanuka et al. · 0 citations

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