G4 · Design Google Search AI Overviews G4 · 设计 Google Search AI 概览
Verified source经核实出处
Google AI Overviews launched 2024 (blog). Credibility B.
Key decisions关键决策
- **Gate by query class**: classifier decides whether AI overview adds value.**按 query 类别门控**：分类器判断是否有增量价值。
- **Reuse index**: retrieve from classic search index instead of a new vector index.**复用索引**：从经典搜索索引取源，省心省钱。
- **Streamed below fold**: first tokens < 500 ms; tail writes as user scrolls.**折叠下流式**：首 token < 500 ms；用户滚动时继续写。
- **Link-forward UX**: clickable cited sources preserve publisher traffic.**链接优先 UX**：引用可点击——保出版方流量。
Follow-ups追问
- Misinformation? prefer authoritative sources; confidence thresholds; fallback to classic.错误信息？优先权威源；置信度阈值；回退经典结果。