Author

Yuqing Xie

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Preprint Oct 2026

LLM Benchmarking via Representation Multi-task Learning

A novel statistical framework based on representation Multi-task Learning (MTL) and an item response theory model is proposed, and overall and domain-specific LLM traits are defined through an Item Response Theory (IRT) model and an MTL approach to estimate these traits from item-level response data.

Yuqing Xie, Yuxuan Xu, Yang-Yang Feng et al. · 0 citations