Unverified50% confidenceSolutionExact time
语义缓存通过计算新查询与历史查询的向量相似度，当超过阈值时直接返回缓存答案，GPTCache等工具实现了该机制
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/29/2026
First Seen
Valid until: 11/27/2026
Sources
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Related Claims
VerifiedThe semantic caching mechanism vectorizes and stores historical responses to similar requests, and when semantic similarity exceeds a threshold, it directly returns cached results to reduce upstream API call frequency and costs79% similarUnverified语义缓存通过计算请求嵌入向量的余弦相似度（阈值通常0.9-0.95）来复用历史结果，在重复查询占比高的场景缓存命中率可达30%-50%71% similarUnverifiedStep-back Prompting is a query rewriting strategy that abstracts specific questions to higher-level ones to retrieve more comprehensive background information.66% similarUnverifiedSelection leakage refers to the search loop itself being able to read the final evaluation score, causing the model to overfit to the holdout set when the number of iterations is large enough, and is closely related to the multiple comparisons problem and p-hacking.65% similar
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