問題文
A health insurer is building retrieval over policy documents that use nested numbered sections, where a subsection's meaning depends on the clause that introduces it. Fixed 500-character chunks produce answers that cite a rule without its qualifying condition. Which chunking approach fits this document shape?
選択肢
- Chunk along the document's section boundaries and include the parent section heading and introductory clause in each chunk's text.
- Reduce the chunk size to 200 characters so that each chunk contains exactly one rule.
- Increase the chunk size to 4,000 characters so that qualifying conditions are likely to be included by chance.
- Store the entire document as a single chunk and let the model find the relevant rule.