Document Parsing and Chunking for Consumer Building Materials Investment Research Knowledge Base Construction

Data for consumer building materials comes primarily from public industry association reports, financial reports of listed building material

What Data Looks Like for This Category

Data for consumer building materials comes primarily from public industry association reports, financial reports of listed building material manufacturers, regional bidding announcements, weekly building material price index reports, and supply chain ledgers. Update frequencies cover daily, weekly, monthly, and quarterly cycles. Document formats include PDF deep research reports, Excel price lists and bidding lists, and Word product parameter manuals. Fields include product specifications, production capacity and sales volume, winning bid amounts, delivery lead times, and more. Units cover multiple measurement standards such as square meters, cubic meters, tons, yuan per square meter, and MPa.

Constraints for Document Parsing and Chunking

Multi-source, heterogeneous document formats require the parsing module to support structured and unstructured content across PDF, Excel, Word, and other formats. Frequently updated data requires the parsing process to support batch rapid processing, to avoid delays that affect the timeliness of the investment research knowledge base. The complex field and unit system requires parsing results to retain the binding relationship between numerical values and their corresponding units, as well as between parameters and their affiliated categories, to prevent incorrect splitting. Mixed distribution of long-text industry trend analysis and short-text product parameters requires chunking logic to balance contextual coherence and information granularity, to avoid splitting associated data from the same project into different chunks.

Configuration Settings

Configuration ItemRecommended ValueRationale
PARSE_FILE_TIMEOUT_SECONDS600 secondsLarge industry research reports contain multi-page tables and long text, with longer-than-average parsing time, requiring sufficient processing time reserved
UPLOAD_FILE_MAX_SIZE1000 MBSingle-batch uploaded manufacturer financial report collections and regional bidding batch files have large volume, requiring relaxed upload limits
maxChunkSize800–1200 charactersRetain complete associations between product specifications and production capacity data, avoid splitting table rows or long paragraph analyses across parameters
ENABLE_MULTI_SHEET_PARSEEnabledConsumer building material Excel documents often contain multiple worksheets of price lists and supply chain data, requiring parsing of all worksheets
CHUNK_OVERLAP100–150 charactersConnect industry trend analysis in long text with subsequent segmented category data, avoid contextual breaks
PRESERVE_UNIT_ASSOCIATIONEnabledRetain the binding relationship between numerical values and their corresponding units in building material parameters, avoid unit loss after parsing

The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require specific analysis, and testing on local samples is recommended before finalization.

Three Common Misconfigurations

  • After uploading an Excel building material price list with multiple worksheets, some worksheet data does not appear in the parsing results, with empty fields. The ENABLE_MULTI_SHEET_PARSE configuration is not enabled, and only the first worksheet is parsed by default.
  • After uploading a 100+ page industry research report PDF, parsing time exceeds the preset threshold, returning a 504 Gateway Timeout error. The PARSE_FILE_TIMEOUT_SECONDS configuration is not adjusted to match the processing time required for large documents.
  • After parsing a building material parameter table with mixed units, some numerical values are separated from their units, and only pure numerical content remains in the results. The PRESERVE_UNIT_ASSOCIATION configuration is not enabled, and numerical values and their corresponding unit fields are not bound by default.

How to Verify Configuration

  • Upload a single 100+ page industry research report PDF, check if parsing completes within the preset timeout period, to confirm the PARSE_FILE_TIMEOUT_SECONDS configuration is active.
  • Upload an Excel building material price list with multiple worksheets, check if the parsing results include data from all worksheets, to confirm the ENABLE_MULTI_SHEET_PARSE configuration is enabled.
  • Upload a table document with mixed parameters, check if the chunking results retain the binding relationship between numerical values and their corresponding units, to confirm the PRESERVE_UNIT_ASSOCIATION configuration is enabled.
  • Upload a batch file collection, check if the upload process is not blocked, to confirm the uploaded file volume does not exceed the limit set by the UPLOAD_FILE_MAX_SIZE configuration.

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.