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Dongjie Yang

Shanghai Jiao Tong University

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#artificial intelligence Preprint Sep 2026

On the Efficiency-Safety Dilemma in Large Reasoning Models

It is found that while efficiency methods seemingly reduce the success rate of jailbreak attacks, this improvement is often superficial and largely arises from degraded reasoning capabilities leading to"attempted but failed"malicious responses, rather than an increase in genuine alignment.

Yifei Yang, Zou-Ying Cao, Xing-Rui Wang et al. · 0 citations
Preprint Aug 2026

TACT: Taxonomy-Aligned Post-Training for Pedagogically Adaptive English Tutoring

This work presents TACT (Taxonomy-Aligned Conversational Tutor), a human-grounded framework for post-training and evaluating pedagogically adaptive ESL tutors and develops two complementary taxonomies: the Tutor-Strategy Taxonomy with 13 tutor response strategies and the Student-Move Taxonomy characterizing learner beh...

Dongjie Yang, Siya Lin, Leixian Shen et al. · 0 citations

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