What the data for this category looks like
Policy and regulatory basis data for communication towers and infrastructure mainly comes from official documents issued by the Ministry of Industry and Information Technology, the Ministry of Housing and Urban-Rural Development, and the State-owned Assets Supervision and Administration Commission of the State Council, as well as related operation specifications and policy interpretation documents. There is no fixed update cycle; updates are synchronized when new 5G infrastructure or tower operation-related policies are released. The structure of individual documents includes fields such as policy document number, issuing authority, effective date, applicable region, core clauses, and technical parameter requirements. Technical parameter fields often come with standard units such as meters, kilowatts, and square meters.
What constraints these characteristics impose on the knowledge base retrieval and recall link
The structured fields of communication tower policy data are numerous, updates have no fixed cycle, and content is rigorous. This imposes three constraints on retrieval and recall:
- Precise filtering must be performed using fields such as policy document number and effective date to avoid retrieving irrelevant operation documents.
- Incremental update trigger rules must be configured to ensure newly released policies can be retrieved promptly.
- The retrieval scope must be limited to the exclusive policy knowledge base to avoid mixing in policy content from other industries.
Additionally, the policy Q&A scenario requires results to match original text expressions. Therefore, retrieval must prioritize retrieving official documents that closely match user queries to ensure compliance and accuracy of responses.
How to set the configuration
Reference only; verify against the target FastGPT release and deployment documentation.
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
similarity | 0.75-0.85 | Policy documents are rigorous, so a high similarity threshold is needed to filter irrelevant content and avoid retrieving non-core policy documents |
limit | Top 10 entries | Policy basis usually focuses on 3-10 core documents; too many results will make the context too long and affect answer accuracy |
searchMode | Full-text retrieval | Policy documents include structured fields such as document number and effective date; full-text retrieval can cover multi-dimensional matching needs |
usingReRank | Enabled | Can re-sort initial retrieval results by release time and relevance to prioritize displaying the latest and most relevant policy documents |
datasetSearchUsingExtensionQuery | Disabled | Policy queries usually use the user's original question, no need to rewrite the query to avoid deviating from the precise matching requirements of policy original text |
collectionIds | Specify the exclusive knowledge base ID for communication tower policies | Isolate policy data from different categories to ensure only policy documents related to communication towers are retrieved |
Three common errors
- Phenomenon: Responses include non-essential content such as knowledge base retrieval input parameters and retrieved document fragments. Cause: The input and output fields of the knowledge base retrieval link were not configured to be hidden in the workflow, and only the output logic for the final answer was retained.
- Phenomenon: Retrieval results mix policy documents from other industries. Cause:
collectionIdswas not configured, resulting in retrieval of content from other category knowledge bases. - Phenomenon: Retrieved policy files are not sorted by effective time. Cause:
usingReRankwas not enabled, or the re-ranking basis was not configured as policy release date.
How to confirm the configuration is correct
- Initiate a test query, input "Approval policy basis for communication base tower construction", and check if the returned results only include policy documents related to communication towers.
- Check the workflow output log to confirm that non-essential content such as knowledge base retrieval input parameters and retrieved document fragments is not included.
- Test queries for policies with different release times to verify that the sorting of retrieval results meets expectations, for example, the latest released policy is displayed first.
- Adjust the value of
similarityto verify that the relevance of retrieval results changes as expected with the threshold.
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.