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cs.CL2026

Depth-Attention: Cross-Layer Value Mixing for Language Models

Boyi Zeng, Yiqin Hao, Zitong Wang +7

Self-attention selects information freely across the sequence, but across depth, Transformers merely add each layer's output to the residual stream, so later layers cannot selectiv…

cs.CL2026

AdaPonderLM: Gated Pondering Language Models with Token-Wise Adaptive Depth

Shixiang Song, He Li, Zitong Wang +6

Test-time scaling via recurrent/iterative Transformers enables large language models to spend more computation at inference, but most pretrained recurrent LMs run a fixed number of…

cs.CL2026

PonderLM-3: Adaptive Token-Wise Pondering with Differentiable Masking

He Li, Feichen Song, Boyi Zeng +4

Test-time scaling has shown that allocating more additional computation at inference can improve generation quality, motivating a natural follow-up question: where should this comp…

cs.CL2026

FreqKV: Key-Value Compression in Frequency Domain for Context Window Extension

Jushi Kai, Yixuan Wang, Boyi Zeng +4

Existing key-value (KV) cache compression methods for large language models (LLMs) often rely on token eviction, which risks losing critical local information in both long prefilli…

cs.CL2025

TreeKV: Smooth Key-Value Cache Compression with Tree Structures

Ziwei He, Jian Yuan, Haoli Bai +2

Efficient key-value (KV) cache compression is critical for scaling transformer-based Large Language Models (LLMs) in long sequences and resource-limited settings. Existing methods…

cs.CL2025

WeightedKV: Attention Scores Weighted Key-Value Cache Merging for Large Language Models

Jian Yuan, Ziwei He, Haoli Bai +2

Large Language Models (LLMs) use key-value (KV) cache to reduce redundant computation in autoregressive generation. However, the KV cache size increases linearly during generation,…