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寫在 demo 與 production 之間

關於 agent 系統、retrieval 評估與 serving 的工作筆記：那些 demo 之後才會出現的部分。

精選 — Engineering

Check Your Metric's Ceiling Before You Optimize Against It

A five-minute oracle check told me my retrieval metric could not move. Perfect retrieval and my actual retrieval scored identically, to the digit.

2026.08.268 分鐘

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2026.09.16EngineeringMy Vector Search Had No Vectors 2026.08.26EngineeringCheck Your Metric's Ceiling Before You Optimize Against It