Question

A legal services company is building a Bedrock Knowledge Base from a document repository in Amazon S3. The repository contains a mix of native text PDFs and scanned PDFs (image-based) of older contracts. After the initial ingestion and sync, users report that queries about clauses found only in the scanned contracts return no relevant results, while queries about native text PDFs work correctly. The team confirms the scanned PDFs synced without errors. What is the MOST appropriate way to make the scanned contract content retrievable?

Accepted Answer

Enable the foundation-model-based advanced parsing (parsing configuration) option in the Knowledge Base data source so it extracts text from image-based content, then resync.

Answer

Increase the vector dimension of the embedding model so it can capture the additional visual features in the scanned documents.

Answer

Switch the chunking strategy from fixed-size to semantic chunking so the scanned PDF paragraphs are split correctly.

Answer

Add metadata filtering to the query so scanned PDFs are prioritized in the retrieval results.