What the data for this category looks like
Knowledge base data related to coatings and inks mainly comes from internal enterprise product manuals, compliance test reports, marketing materials, and industry standard documents. The data update rhythm is triggered by new product launches, compliance standard revisions, or marketing material iterations, with no fixed cycle. Most document structures include three types of content: standardized parameter tables, application scenario descriptions, and compliance certification information. Fields include film thickness (μm), drying time (hours), packaging specification (kg/barrel), color number, formula number, and others. Some documents also include multi-version iteration identifiers and cross-substrate adaptation descriptions.
What constraints these characteristics impose on knowledge base retrieval and recall
The presence of standardized parameters and precise numerical values requires retrieval to match content precision, avoiding parameter mismatches caused by generic semantic matching. The existence of multi-version materials and compliance documents requires recall to filter by fields such as version and certification number, preventing the return of outdated or invalid content. The high proportion of long documents requires that during segment processing, the associated context of parameters and application scenarios be retained, preventing key information from being split apart. Questions in marketing scenarios mostly focus on specific application needs, requiring retrieval results to accurately correspond to target parameters or scenarios, avoiding redundant content that interferes with decision-making.
How to set configurations
| Configuration Item | Recommended Value Range | Rationale |
|---|---|---|
similarity threshold | 0.75–0.85 | Coatings and inks marketing scenarios require high matching accuracy to filter irrelevant content unrelated to target parameters |
chunk length | 800–1200 characters | Retain the associated context of parameters and application descriptions to avoid splitting key information |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Adapt to the parsing time required for large-format compliance reports or product manuals, preventing timeout interruptions |
UPLOAD_FILE_MAX_SIZE | 500 MB | Cover the common file size of single coatings and inks product manuals or industry standard documents |
recall count | Top 6 results | Provide an appropriate number of precise results to meet the rapid reference needs of marketing personnel |
reranked return count | Top 3 results | Prioritize displaying the most matching core parameters or application solutions to simplify decision-making processes |
The parameter values provided on this page are conventional recommendations used as a starting point 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 settings.
Three common mistakes
- Phenomenon: Questions unrelated to coatings and inks trigger knowledge base retrieval, returning irrelevant product parameter content. Cause: The
similarity thresholdparameter is not configured, or the threshold is set below 0.7, resulting in the recall of low-matching non-target content. - Phenomenon: Multiple fragmented parameter segments appear in retrieval results, unable to fully present the complete parameter combination corresponding to the application scenario. Cause: The chunk length is set too short, splitting associated parameters and application descriptions, leading to context loss.
- Phenomenon: When uploading compliance documents larger than 200 MB in version v4.8.10, a timeout error is reported on the interface, and the uploaded file is not displayed temporarily, with synchronization completed after a period of time. Cause: The default
PARSE_FILE_TIMEOUT_SECONDSparameter is set to 300 seconds, which is insufficient for parsing large-format coatings and inks documents, and the front end does not load asynchronous upload status.
How to confirm configurations are correctly set
- Submit a test question unrelated to coatings and inks, check whether a preset non-knowledge base reply is triggered, to confirm that the
similarity thresholdconfiguration is effective. - Upload a product manual document containing multiple sets of parameters, check whether the segmented text retains the associated context of parameters and application descriptions, to confirm that the
chunk lengthconfiguration is reasonable. - Upload an industry standard document larger than 200 MB, check that the parsing time matches the
PARSE_FILE_TIMEOUT_SECONDSparameter setting, and confirm that the upload status is displayed in real time. - Submit a precise parameter question, check that the number of returned results matches the configurations of
recall countandreranked return count, to confirm that the retrieval logic is effective.
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.