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Author

Samyadeep Basu

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#artificial intelligence Preprint Sep 2026

FlexRouter: Learning Complementary Model Sets for Flexible LLM Routing

Existing Large Language Model (LLM) routing methods score LLMs independently to select top-$k$ models. However, this ignores model correlations and enforces a rigid computational budget. Consequently, routers often select redundant models that share failure modes, limiting the overall probability of success. To address...

Wang Wei, Harry Yang, Tiankai Yang et al. · 1 citation
Preprint Sep 2026

A Glance Is All You Need: Single-Pass Fine-Grained Image Captioning with SimLoss

An image may be worth a thousand words, but most captioning models describe it in only a few. Modern vision-language models produce fluent high-level captions, yet routinely miss the attributes, counts, textures, materials, and spatial relations that make an image visually specific. Recent multi-stage systems recover s...

Suryaansh Jain, Rahasya Barkur, G. Vishal et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Beyond Top-$k$ Skill Retrieval: Diversity-Aware Skill Routing for LLM Agents

Large language model (LLM) agents increasingly rely on external skills, but routing user requests over large skill registries is difficult because many skills are functionally redundant while complex tasks often require complementary skill sets. Existing skill routers typically rank candidates independently by query re...

Wang Wei, Tiankai Yang, Samyadeep Basu et al. · 2 citations
#artificial intelligence Preprint Sep 2026

Spurious Advantage Hidden in GRPO

SignBALANCE is proposed, whose magnitude is composition-free: it keeps the verifier sign, uses a global scale, and restores zero-mean balance via a stop-gradient per-class rescaling.

Jiamian Wang, Samyadeep Basu, Koustava Goswami et al. · 0 citations
#artificial intelligence Preprint Aug 2026

Not Worth Another Token: Marginal Value Estimation for Efficient Deep Research Agents

The results show that pruning effectiveness depends more on where pruning is applied than on the specific scoring rule: early pruning yields the largest end-to-end savings, while later pruning mainly refines the final synthesis context.

Harshitha Kolukuluru, Reshma Ashok, Kirat Arora et al. · 0 citations

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