Unverified50% confidenceSolutionExact time
文本块重叠通常设为块大小的10%-20%，512到1024 tokens是经验上的合理切分区间
1
Sources
50%
Confidence
Long-term
Relevance
7/14/2026
First Seen
Sources
从零构建离线RAG应用：PDF文档本地问答完整指南
Related Claims
Partially VerifiedThe overlap in text chunking is typically set to 10%–20% of the chunk_size.77% similarUnverifiedTo mitigate the problem of knowledge points being split across two segments, engineering practice commonly retains a certain overlap between adjacent segments; for example, with each segment at 500 tokens, the overlap is set to 50 tokens.70% similarUnverifiedIn the RAG document chunking industry, sliding window chunking of 512 to 1024 tokens with retained context overlap is commonly used66% similar
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