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Yunjia Xi

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#software testing Preprint Oct 2026

Evaluating Agentic Capabilities Before Post-Training: An End-to-End Approach

Agentic capabilities are increasingly important for modern LLMs, yet remain difficult to evaluate during pretraining. Existing approaches typically rely on static trajectory-derived tasks or likelihood-based proxies, which are lightweight but provide limited visibility into how base models behave in interactive environ...

Jia-Rui Qin, Jun-Jie Huang, Yun-Jia Xi et al. · 0 citations
Book Open access Apr 2026

Modular Representation Compression: Adapting LLM Representations for Efficient and Effective Recommendation

Modular Representation Compression (MARC) is proposed to explicitly control the modularity of LLMs, and identifies a counterintuitive phenomenon during representation compression: Mid-layer Representation Advantage (MRA), where representations from middle layers of LLMs outperform those from final layers in recommendat...

Yunjia Xi, Menghui Zhu, Jianghao Lin et al. · 0 citations

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