What the documents look like
Supplier entry settlement in the supermarket and convenience-store category centres on purchase-and-sale or consignment payables. A supplier may hold no on-site counter, so the settlement relationship is carried by documents rather than by a staffed concession. Four material types dominate. The procurement contract sets the settlement basis. The delivery acceptance note records the quantity actually received. The rebate agreement sets the deduction conditions. The reconciliation statement summarises transactions for a period. These materials arrive from ERP procurement, the supplier portal, POS sales and the finance system, and they update weekly or monthly.
For document parsing and chunking, the practical difficulty is that these four materials do not share field structure or granularity. Contract clauses, acceptance line items, rebate tiers and reconciliation summaries differ in how they are organised. A chunking scheme has to keep each clause next to the content it governs, so that a condition, its explanation and the object it constrains stay retrievable together.
Constraints at the document chunking step
Parsing begins by checking the source structure against the parsed result, and by preserving a document identity and version that can point back to the original. Segmentation is then checked against each material's own structure. Conditions, explanations and the content they constrain should not be split apart.
Original data and retrieval indexes are distinct. One group of original data can carry multiple indexes, which allows terminology, identifiers and natural-language phrasing to be indexed separately. Retrieval checks use terms, identifiers and natural-language questions to observe how segmentation performs on real questions. After a material is revised, the actual training and index state must be checked; a successful upload does not by itself mean retrieval has updated.
Hypothetical drill sample: the source material reads, "Party A is a certain supermarket, Party B is a certain food supplier; the settlement period is the calendar month, and the accepted quantity is based on the delivery acceptance note signed by the receiving department; the rebate is accrued at two percent of quarterly sales, and returned goods amounts are deducted from sales for the period." The draft sentence to be judged reads, "The rebate for this quarter is accrued on accepted quantity, and returns do not reduce the base." The draft diverges from the source on two points, the accrual base and the treatment of returns, and is unsupported.
Configuration and implementation checks
| Configuration or check item | Setting relevant to this page | Relation to the sample |
|---|---|---|
| Segmentation basis | Segment separately by contract clause, acceptance line item, rebate tier and reconciliation summary | Keeps the rebate condition and the returns statement in the same segment |
| Index count | One group of original data can carry multiple indexes | Build separate indexes for terminology, identifiers and natural language |
| Search mode | Semantic search, full-text search or hybrid search selected as needed | Identifier queries use full-text or hybrid search |
| Reference cap | Each search references at most n tokens | Hypothetical trial starting value 3000 for this sample, chosen because the sample clauses are short; compared with 2000 to observe recall completeness |
| Minimum relevance | A 0 to 1 filter threshold, effective only in semantic search or with result reranking | Hypothetical trial starting value 0.3, compared with 0.5 to observe unrelated fragments |
| Post-update recheck | After a material changes, check training and index state | After a contract revision, confirm retrieval results have updated |
Three common errors
- Writing the rebate accrual base as accepted quantity. The source states the base is sales, and that returned goods amounts are deducted from sales for the period. The check inputs the draft sentence and the source, compares the accrual base and the treatment of returns, and is satisfied only when the draft matches the source on both points.
- Treating a successful upload as retrieval already updated. The check inputs the revised contract text, compares the retrieval return against the revised clause, and is satisfied only when the return contains the revised clause.
- Treating a retrieval result as an authorisation to execute. A reconciliation statement returned by retrieval does not mean settlement has been approved. The check inputs a settlement request awaiting approval, compares the retrieval result against the approval record, and is satisfied only when an independent approval record exists.
How to verify the setup
- Verification one: input the hypothetical source text and the draft sentence, compare the accrual base and the treatment of returns, and require the draft to match the source on both points. The current result is unsupported.
- Verification two: input an identifier-type query from the sample, compare the returns from full-text search and semantic search, and require the return to contain the corresponding clause. An empty result is checked against a paper input of [] for downstream design.
- Verification three: input the revised contract text, compare the retrieval return against the revised clause, and require the return to contain the revised clause. For libraries across different vector models, first check the identifier and exclude non-conforming ones; do not run cross-model retrieval to compare missed recall.
The operational handover boundary is that materials, operations and requests sit at particular authorisation states, and retrieval or a form does not constitute authorisation to execute. Semantic recall and relevance do not perform permission or entity isolation. A same-vector-model requirement for a retrieval library does not extend to business-registration sites or other external systems. RRF is a fusion step for mixed results, not a switch. Optional paths in the overall document flow, such as image retrieval or reranking, run only when the corresponding input and model capability are present and the setting is enabled. A pending review does not demonstrate a lack of operating permission; signing, reaching cooperation and contract effectiveness are three distinct facts; a quotation validity period does not indicate a supply period. Missing evidence remains missing.