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cs.CL2026

A Practical Evaluation Method for Long-Form Simultaneous Speech-to-Speech Translation

Yulin Xue, Siqi Ouyang, Lei Li

Simultaneous speech-to-speech translation (SimulS2ST) enables real-time cross-lingual communication, but existing evaluation has focused largely on short or pre-segmented speech ra…

cs.CL2026

RASST: Retrieval-Augmented Simultaneous Speech Translation

Jiaxuan Luo, Siqi Ouyang, Jiaxing Xu +1

Simultaneous speech translation produces target text incrementally from partial speech input. Recent speech large language models have markedly improved SST quality but still strug…

cs.CL2026

DashAttention: Differentiable and Adaptive Sparse Hierarchical Attention

Yuxiang Huang, Nuno M. T. Gonçalves, Federico Alvetreti +5

Current hierarchical attention methods, such as NSA and InfLLMv2, select the top-k relevant key-value (KV) blocks based on coarse attention scores and subsequently apply fine-grain…

cs.CL2026

Hierarchical Policy Optimization for Simultaneous Translation of Unbounded Speech

Siqi Ouyang, Shuoyang Ding, Oleksii Hrinchuk +4

Simultaneous speech translation (SST) generates translations while receiving partial speech input. Recent advances show that large language models (LLMs) can substantially improve…

cs.CL2026

Efficient Document Parsing via Parallel Token Prediction

Lei Li, Ze Zhao, Meng Li +6

Document parsing, as a fundamental yet crucial vision task, is being revolutionized by vision-language models (VLMs). However, the autoregressive (AR) decoding inherent to VLMs cre…

cs.CL2026

Mending the Holes: Mitigating Reward Hacking in Reinforcement Learning for Multilingual Translation

Yifeng Liu, Siqi Ouyang, Yatish Hosmane Revanasiddappa +1

Large Language Models (LLMs) have demonstrated remarkable capability in machine translation on high-resource language pairs, yet their performance on low-resource translation still…