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cs.CL2026

Mechanistic Insights into Functional Sparsity in Multimodal LLMs via CoRe Heads

Ruoxi Sun, Quantong Qiu, Juntao Li +3

While Multimodal Large Language Models (MLLMs) demonstrate remarkable proficiency on complex vision-language tasks, the mechanisms by which they extract query-relevant visual featu…

cs.CL2026

Elastic Attention: Test-time Adaptive Sparsity Ratios for Efficient Transformers

Zecheng Tang, Quantong Qiu, Yi Yang +6

The quadratic complexity of standard attention mechanisms poses a significant scalability bottleneck for large language models (LLMs) in long-context scenarios. While hybrid attent…

cs.CL2025

LongRM: Revealing and Unlocking the Context Boundary of Reward Modeling

Zecheng Tang, Baibei Ji, Quantong Qiu +4

Reward model (RM) plays a pivotal role in aligning large language model (LLM) with human preferences. As real-world applications increasingly involve long history trajectories, e.g…

cs.CL2025

CaliDrop: KV Cache Compression with Calibration

Yi Su, Quantong Qiu, Yuechi Zhou +6

Large Language Models (LLMs) require substantial computational resources during generation. While the Key-Value (KV) cache significantly accelerates this process by storing attenti…

cs.CL2025

LOOM-Scope: a comprehensive and efficient LOng-cOntext Model evaluation framework

Zecheng Tang, Haitian Wang, Quantong Qiu +5

Long-context processing has become a fundamental capability for large language models~(LLMs). To assess model's long-context performance, numerous long-context evaluation benchmark…

cs.CL2025

Accurate KV Cache Quantization with Outlier Tokens Tracing

Yi Su, Yuechi Zhou, Quantong Qiu +6

The impressive capabilities of Large Language Models (LLMs) come at the cost of substantial computational resources during deployment. While KV Cache can significantly reduce recom…