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Knowledge Base

LAYRA's RAG system provides visual-native document understanding with layout-aware retrieval and processing. To enable RAG functionality, you need to create a knowledge base and upload documents before starting conversations in the RAG-CHAT module. This guide covers how to create and manage your knowledge base.

Create a Knowledge Base​

Step 1: Select the Knowledge Base Module​

When no knowledge base is selected, the main area on the right displays all uploaded documents from all knowledge bases. You can search for specific documents using the search box, which supports fuzzy search.

Knowledge Base Selection

Step 2: Create Your First Knowledge Base​

Click Add Knowledge Base in the upper left corner to create your first knowledge base.

Create Knowledge Base

NOTE

You can rename or delete a knowledge base by clicking the three-dot menu button next to the knowledge base name in the left sidebar.

WARNING

Deleted knowledge bases cannot be recovered.

Uploading Documents​

LAYRA supports 50+ file formats including PDF, DOCX, PPTX, DOC, etc. To upload:

  1. Select your newly created knowledge base to access its document page
  2. Upload files in batches by either:
    • Clicking the Upload Files button (supports multi-file selection), or
    • Dragging-and-dropping multiple files into the upload zone
NOTE

The system will process all files in parallel, with the maximum number of concurrent instances determined by the UNOSERVER_INSTANCES setting in the .env file and the available GPU resources. Progress will be displayed as a percentage.

The progress percentage is calculated by file count. For example:

  • 4 documents: 0% → 25% → 50% → 75% → 100%
  • 1 document: 0% → 100%

Document Upload

NOTE

You can search for documents within the current knowledge base using the search box, which supports fuzzy search.

Downloading and Deleting Documents​

Click the Download or Delete icons to perform corresponding actions.

Document Management

WARNING

Deleted files cannot be recovered.

Visual RAG Features​

Unlike traditional text-only RAG systems, LAYRA preserves:

  • ✅ Layout structure (headers, columns, sections)
  • ✅ Visual elements (tables, charts, diagrams)
BEST PRACTICES

Regularly remove outdated documents and update with new versions.

Next Steps​

Try visual Q&A in Chat