What the data for this category looks like
Marketing content data for infrastructure construction mainly comes from project bidding documents, completed case libraries, regional infrastructure planning announcements, and customized marketing materials. The data update rhythm follows project milestones. Core parameters are synchronized during the bidding winning, construction start, and completion phases. Marketing materials are updated iteratively every quarter.
Document structures typically include fields such as project overview, technical parameters, cost breakdown, partner information, and duration requirements. Units use engineering-specific metrics including cubic meters, square meters, ten thousand yuan, and days. Complete single bidding documents or large case files often exceed the size range of general documents.
What constraints do these characteristics impose on the retrieval and recall link
Infrastructure construction marketing data has many structured fields, large single-document size, and update frequency that fluctuates with project milestones. These characteristics create multiple constraints for the retrieval and recall process. First, content with specialized measurement fields must support targeted field retrieval to avoid generalized matching that deviates from requirements. Second, large single documents require appropriate segmentation rules to prevent semantic fragmentation that reduces recall accuracy. Third, frequently updated project data must support incremental synchronization to ensure retrieval results do not include expired project information. When multiple types of documents coexist, retrieval scope must be divided by document type to prevent irrelevant content from interfering with recall results.
How to configure the settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
UPLOAD_FILE_MAX_SIZE | 1500 MB | Adapts to the single-file size requirements of large project bidding documents and complete engineering cases, avoiding semantic fragmentation caused by document splitting |
PARSE_FILE_SEGMENT_LENGTH | 800–1200 characters | Matches the average length of paragraphs in infrastructure engineering documents, preserving complete semantics of technical parameters and project logic |
Recall Count | Top 6–8 results | Balances retrieval coverage and result redundancy, suitable for retrieval scenarios of engineering content with multi-parameter matching |
Similarity Threshold | 0.72–0.80 | Filters low-relevance general marketing content, accurately matching core fields such as engineering parameters and project requirements |
field_retrieval_enable | Enabled | Supports targeted retrieval by fields such as "project type", "cost range", and "duration", enabling accurate recall of structured data |
SYNC_INTERVAL | Every 4 hours | Adapts to the high-frequency update rhythm of infrastructure projects, ensuring retrieval content is synchronized with the latest project status |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume and business rules. Specific issues require individual analysis, and it is recommended to test on your own samples before finalizing the configuration.
Three common mistakes
- Phenomenon: An error indicating file size limit exceeded is triggered when uploading large engineering bidding documents, and import cannot be completed. Cause: The
UPLOAD_FILE_MAX_SIZEparameter is not adjusted to a value suitable for infrastructure documents. The default 100 MB cannot cover large project files. - Phenomenon: After importing multiple engineering cases, the retrieval result only returns 1 matching entry. Cause: Targeted field retrieval is not enabled, or the
Recall Countparameter is set too low to cover scenarios with multi-document matching. - Phenomenon: An error is prompted when testing after configuring the model, but the knowledge base content can be normally referenced during formal operation. Cause: The context parameter configuration of the test interface and the formal operation interface are different, and the
maxContextvalue is not unified and aligned.
How to confirm the configuration is complete
- Upload a single engineering bidding document larger than 100 MB, confirm that import and parsing can be completed normally.
- Enter a query containing multiple structured fields, confirm that the number of returned matching results matches the configured expectation.
- Manually trigger knowledge base synchronization, confirm that updated project data appears normally in retrieval results.
- Compare the returned content of the model test interface and the formal operation interface, confirm that their context parameter configurations are consistent.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.