Fathom: Per-Query Read Depth for Sparse Decoding over Offloaded KV Caches

  • 类型:arxiv
  • 标识:2609.17652
  • 链接:https://arxiv.org/abs/2609.17652
  • 主分类:llm-infra
  • 形态:method
  • 被引:0
  • 被引来源:Semantic Scholar + OpenAlex
  • S2被引:0
  • OpenAlex被引:0
  • 影响力被引:0
  • TLDR:Fathom is presented, a key scan in which each query decides how many bits of each key channel to read, and on real coding-agent sessions Fathom reaches the step agreement of the most accurate 136-bit scan at 92 bits.
  • OpenAlex ID:W7213529718
  • OpenAlex DOI:10.48550/arxiv.2609.17652
  • DOI:10.48550/arxiv.2609.17652
  • DOI来源:OpenAlex
  • 开放获取:green
  • 开放获取链接:https://doi.org/10.48550/arxiv.2609.17652
  • OpenAlex更新:2026-09-19
  • 待LLM分类:否
  • 标题中文:Fathom:面向卸载 KV 缓存稀疏解码的每查询读取深度
  • TLDR中文:本文提出 Fathom,一种 key scan,其中每个查询决定读取每个 key 通道的比特数;在真实的 coding agent 会话中,Fathom 以 92 bit 达到最准确的 136 bit scan 的步骤一致性。
  • 来源文件:
  • /inbox/tom/_candidates/2026-09-17-agent-rag-longcontext-candidates.json
  • /inbox/tom/_candidates/2026-09-18-agent-rag-longcontext-candidates.json
  • [S2 enrich]
  • [OpenAlex backfill]