tracked author

Xin Cheng

First author and arXiv submitter of Engram / Conditional Memory via Scalable Lookup, and equal-contribution contact author of DSpark, with Peking University and DeepSeek-AI affiliation on both papers. Public profile evidence beyond paper/project pages is sparse, so no personal X account is recorded.

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DeepSeek V4.1 Flash: Pushing the Limits of KV Cache Compression

DeepSeek V4.1 Flash 将因果编码器与解码器分工、跨层稀疏 KV 复用、四位全局缓存和近似窗口重放组合起来,把长输入的预填充主干计算近似减半、全局 KV 降至每 token 890 字节,并在发布方评测中显著提升多项 agent 能力;端到端服务收益和近似重放的极端条件可靠性仍缺少充分公开验证。

待审阅 2026-09-10-deepseek-v4-1-flash-kv-cache-compression KV CacheSparse AttentionMultimodal Model