Unverified50% confidenceSolutionExact time
The solution combines four types of signals from within the document for localization: PDF character coordinates, OCR spatial geometry, string and format matching, and table assignment combined with page-level visual evidence.
1
Sources
50%
Confidence
Long-term
Relevance
10/6/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe PDF parser built by the developer wraps a FastAPI backend around pdfplumber, probing precise visual grid line coordinates page by page rather than performing basic text stream reading.71% similarUnverifiedHeterogeneous documents refer to collections of documents that differ in format, structure, and source, potentially including PDFs, web pages, tables, mixed text-and-image layouts, code snippets, and other forms.68% similarUnverified梳状表单字段特性在 PDF 1.5 规范中就已定义67% similar
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