Author

Jiaqi Zhu

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Jul 2026

DSpark: Confidence-Scheduled Speculative Decoding with Semi-Autoregressive Generation

DSpark is introduced, a speculative decoding framework that unifies high-throughput parallel generation with adaptive, load-aware verification, and enables performance tiers that were previously unattainable, shifting the Pareto frontier of the DeepSeek-V4 serving system.

Xin Cheng, Xingkai Yu, Chenze Shao et al. · arXiv.org · 24 citations · ⚡8

Preprint Aug 2026

Lexical Perturbations Disrupt LLM Reasoning: An Empirical Study of Attention Diversion

Attention Diversion explains why inference-time strategies, including chain-of-thought prompting, spell-checking, self-repair, and stronger repair models, fail to consistently recover performance: each addresses one channel at a time.

Jiaqi Zhu, Yang Zhang, Junhua Ding et al. · 0 citations