Unverified50% confidenceTradeoffExact time
文档分块采用带重叠的滑动窗口设计，块太大会引入噪声，块太小会截断语义单元，重叠可避免关键句在边界处被切断
1
Sources
50%
Confidence
Long-term
Relevance
7/25/2026
First Seen
Sources
本地离线RAG应用实战：用Ollama+ChromaDB构建PDF私密问答系统
redditr/ollama7/12/2026
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