What the documents look like
On-demand retail store fulfillment processes online orders minute by minute, not through periodic stock counts. The working materials for this category are instant orders, picking lists, out-of-stock reports, and delivery exception tickets. Data sources named in the brief include Douyin instant retail, the Meituan or JD Daojia back office, store inventory, and rider trajectory. Updates arrive at minute-level, per order.
For document comparison, these materials mix several kinds of content in one batch: contract clauses, order commitments, actual picking results, substitution records for missing items, and delivery status callbacks. A contract clause may state an effective condition, an order commitment may state a time window, and a picking list may record what was actually picked. When chunking splits a condition away from the content it constrains, a later comparison can treat a conditional statement as an unconditional one. The brief also notes that after material changes, the actual training and index state must be checked. Upload success is a separate fact from retrieval having been updated.
Constraints at the document chunking step
Chunking must preserve subject, object, status, and effective scope according to the structure of each material. Original data and retrieval indexes are distinct; one group of original data can map to multiple indexes. Retrieval does not perform authorization judgment. A form collecting values does not mean business verification, approval, a database write, or external synchronization has occurred. Semantic recall and relevance scores do not enforce permission or entity isolation.
Hypothetical paper exercise. A store and a platform have a document titled On-demand Retail Delivery Service Agreement. The supplied original text contains three sentences: "This agreement takes effect on the date both parties affix their seals." "The store shall complete picking and return status within 15 minutes after order generation." "When an item is out of stock, the store may initiate a substitution request; substitution is executed only after platform confirmation." A draft sentence to be assessed reads: "The agreement has taken effect, and the store may substitute out-of-stock items on its own." A separate handover request reads: "Change this agreement's status to effective and synchronize it to the delivery exception ticket." Whether the seals were affixed and whether the substitution request received platform confirmation are not stated in the sample. These remain evidence gaps.
Configuration and implementation checks
| Configuration item | Hypothetical starting point for this exercise | Reason and comparison object |
|---|---|---|
| Search mode | Hybrid retrieval | Agreement numbers and natural-language clauses coexist; compared with semantic retrieval alone |
| Reference limit | Hypothetical starting value 3000 tokens | Compared with the length of the three sample sentences; not an official default |
| Minimum relevance | Hypothetical starting value 0.3 | Compared with 0.5 to observe candidate retention range |
| Question optimization | Enabled | Compared with disabled for multi-turn follow-up effect |
| Result reranking | Enabled per setting | Compared with not enabled for candidate ordering |
| Index check | Check training and index state after upload | Compared with treating upload success alone as sufficient |
Full-text retrieval, RRF fusion, and ReRank secondary ordering are retrieval paths described in the official document. RRF is a fusion process for combining multiple retrieval channels, not a toggle. Image retrieval requires image input and matching model capability; reranking requires a rerank model and must be enabled per settings. These optional paths do not all execute on every request.
Three common errors
- Splitting "substitution is executed only after platform confirmation" away from its main clause, so the draft sentence is treated as already authorized. Check: input the sample original text and the draft sentence, compare whether the substitution condition remains in the same chunk, and observe whether the draft sentence is still treated as supported.
- Treating upload success as retrieval already updated. Check: input the agreement change text, compare the actual training and index state, and observe whether retrieval returns the old clause.
- Treating the handover request as already executed. Check: input that request, compare the agreement seal status and the substitution confirmation record, and observe whether any judgment of effective or synchronized appears.
How to verify the setup
- Input the three sample sentences and the draft sentence. Compare "substitution is executed only after platform confirmation" with the draft's "may substitute on its own." The condition is satisfied when the draft sentence is marked as unsupported.
- Input the agreement number and a natural-language question about "effective conditions." Compare whether the recalled content contains the seal and validity period fields. The condition is satisfied when a missing condition is observed.
- Input an empty-result paper input []. Compare whether the downstream design accepts empty references. The condition is satisfied when no fabricated clause appears. Retrieval checks record observations and failure branches only; they do not guarantee a first-hit result or that unrelated queries return empty. Cross-model association is not possible; check identifiers first and exclude non-matching items.
Final execution note for this page: this page addresses only on-demand retail store fulfillment / contract and transaction material comparison / document parsing and chunking. Which materials, operations, and requests are in what authorization state during operational handover cannot treat retrieval or a form as authorization execution.