aws-samples/sample-extreme-text-classifier
A Python text classifier for large-scale multi-class classification using Amazon Bedrock. Supports classification of 1000+ classes with LLM reranking and attribute validation.
Implements a 3-step pipeline combining embedding-based semantic search with optional LLM reranking and attribute validation using Amazon Bedrock models. Handles extreme-scale classification (1000+ classes) by filtering candidates efficiently before applying computationally expensive LLM evaluation, while supporting multimodal PDF extraction via Amazon Nova. Integrates with AWS Bedrock for reranking and validation, using pre-computed embeddings for scalable similarity search across large class hierarchies.
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Python
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MIT-0
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Last pushed
Feb 14, 2026
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