What Data Looks Like for This Category
Data sources include enterprise-owned printing process manuals, custom customer requirement documents, sample scan files, and quote template libraries. Updates are rolled out in batches tied to new material launches, process iterations, and new large customer custom case additions. Most documents are PDF product catalogs, Excel quote sheets, and Word process descriptions. Some documents include high-resolution scan images of physical samples. Fields include material grammage (unit: g/㎡), number of print colors, finished product dimensions (unit: mm), minimum order quantity per batch, delivery lead time (unit: days), quoted unit price (unit: yuan/square meter), and more.
Constraints for Retrieval and Recall Workflow
Mixed document types require parsing to support structured extraction across PDF, Excel, and Word formats, to avoid losing structured fields. Fields with defined units require semantic matching linked to units during retrieval, to prevent invalid recalls caused by unit confusion. Batch-based updates create frequent demand for batch index rebuilding, so the system must support controlled batch task execution. Documents with high image and text content rely on OCR to extract text. OCR accuracy directly affects the accuracy of recalled content. A large amount of homogeneous content requires adding extra ranking rules during recall, to avoid invalid stacking of similar content.
Configuration Settings
| Config Item | Recommended Value | Rationale |
|---|---|---|
Recall Count | Top 8–12 Entries | Packaging and printing marketing content mostly consists of structured process and quote information. A single retrieval round does not need excessive entries; 8–12 entries covers core requirements |
Similarity Threshold | 0.72–0.85 | Packaging and printing documents contain large amounts of same-structure similar content. A threshold that is too low causes irrelevant recalls, while a threshold that is too high misses valid matching entries |
Chunk Length | 800–1200 characters | Packaging and printing process descriptions and quote sheets mostly use short paragraphs plus structured fields. A chunk that is too long loses field association information, while a chunk that is too short breaks semantic integrity |
Re-ranked Return Count | Top 4–6 Entries | Marketing content needs to prioritize core catalogs and quote templates. Retaining a small number of high-match entries after re-ranking meets customer acquisition scenario needs |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Packaging and printing PDF catalogs often include high-resolution images, so OCR parsing takes longer. 300 seconds covers most single-file parsing requirements |
REINDEX_BATCH_SIZE | 20–30 files | Packaging and printing document updates are mostly batch-based. Using 20–30 files per batch during index rebuilding avoids overloading servers while ensuring task execution efficiency |
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. It is recommended to test on your own samples before finalizing settings.
Three Common Misconfigurations
- Phenomenon: Older homogeneous documents appear before newer documents in search results, without prioritizing by update time. Cause: No weight weighting rule based on document update time is configured. Default recall ranking only relies on similarity, and no time factor is added.
- Phenomenon:
504 Gateway Timeouterror is triggered during batch index rebuilding. Cause: The number of files rebuilt in a single batch exceeds server capacity, and no split batch execution is performed. - Phenomenon: Structured fields such as material grammage and dimensions are missing from parsed documents. Cause: Structured parsing switches for Excel and PDF tables are not enabled, and only plain text content is extracted.
How to Verify Proper Configuration
- Upload a packaging and printing quote sheet in Excel format and a PDF catalog, check if parsed structured fields include preset information such as grammage, dimensions, unit price, and other required data.
- Submit a search request that includes both old and new homogeneous documents, verify that documents with more recent update times appear first in the returned results.
- Execute a batch index rebuilding operation, check if the task execution status does not trigger timeout errors within the preset batch size.
- Adjust the similarity threshold, search the same keyword, verify that the number of returned results falls within the preset recall count range.
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.