What data for this category looks like
Data related to municipal water utility service inquiries and responses originates from public service guides published by municipal water utilities, monthly water quality monitoring reports, water supply repair process specifications, drainage permit application rules, and other official documents, plus real-time data submitted during daily inspections. Two update schedules apply: administrative policy documents are synced and updated quarterly, while real-time monitoring and repair data updates daily. Most documents use a standardized chapter-based structure, with fields including service item number, processing time limit, fee standard, and monitoring point number. Content such as water quality indicators and water pressure parameters includes clear unit labels.
What constraints these characteristics impose on knowledge base retrieval and recall
Regular updates to administrative policy documents require the retrieval pipeline to support incremental synchronization, preventing recall of expired processing requirements. Daily updates to real-time monitoring data require adaptation to index refresh mechanisms, ensuring the latest data is returned during inquiries. Fields with units require the retrieval process to retain unit associations, avoiding unlabeled vague results when users ask about "water pressure compliance values". The multi-field document structure requires retrieval to support precise filtering by dimensions such as service items and monitoring points, preventing irrelevant water quality monitoring content from appearing in service inquiry results. Appropriate chunking strategies are needed for long process description paragraphs, ensuring accurate retrieval matching.
How to configure the system
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
similarity | 0.75–0.85 | Matches the high density of technical terms in water utility service documents, balances retrieval precision and coverage, and complies with FastGPT v4.17.0 parameter rules |
limit | Top 8 results | Users seeking water utility service inquiries need quick access to accurate information, avoiding information overload from excessive results |
searchMode | semantic | Matches professional phrasing in service guides, avoiding semantic bias from keyword matching, such as distinguishing content related to "drainage" and "sewage discharge" |
usingReRank | Enabled | Re-ranks initial recall results, corrects priority deviations from technical term matching, and places core service processes in prominent positions |
datasetSearchUsingExtensionQuery | Enabled | Performs reference resolution and query expansion for user inquiries related to water utilities, resolving issues with ambiguous references such as "this point" or "this process" |
collectionIds | Specify the exclusive collection for the water utility service knowledge base | Avoid recalling documents from other categories, ensuring inquiry content only links to data related to water utility services |
Three common configuration errors
- Phenomenon: Retrieval results include ambiguous references such as "this point" or "this process", which cannot match the actual water utility items the user is inquiring about. Cause: The
datasetSearchUsingExtensionQueryconfiguration is not enabled, and reference resolution and query expansion for user questions are not completed. - Phenomenon: A single retrieval returns more than 10 results, requiring users to browse large amounts of content to find required information. Cause: The
limitconfiguration is not set, or the value exceeds a reasonable range. - Phenomenon: Recalled service guide content does not match the latest policies, such as processing time limits inconsistent with current official requirements. Cause: The incremental synchronization update mechanism for the knowledge base is not configured, and the index is not refreshed alongside updates to official documents.
How to confirm configuration is correct
- Upload a test copy of an expired service document, initiate a corresponding inquiry, confirm that the expired content is not recalled, to verify that the incremental synchronization configuration is active.
- Initiate a test question containing ambiguous references, such as "How to handle this", confirm that the recall results link to specific water utility service items, to verify that the
datasetSearchUsingExtensionQueryconfiguration is active. - Initiate an inquiry related to technical terms, such as "drainage permit application process", confirm that the order of recall results aligns with business priorities, to verify that the
usingReRankconfiguration is active. - Check the linked configuration of the knowledge base collection, confirm that only the exclusive collection ID for water utility services is bound, to avoid cross-category recall of irrelevant content.
The values provided here are common starting points, and should be evaluated against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.