# Page Not Found

The URL `tutorials/retrieval/query-transformer` does not exist.

You might be looking for one of these pages:
- [Query Transformer](https://gdplabs.gitbook.io/sdk/gen-ai-sdk/tutorials/retrieval/query-transformer.md)
- [Modality Transformer](https://gdplabs.gitbook.io/sdk/gen-ai-sdk/tutorials/multimodality/modality-transformer.md)
- [Output Transformer](https://gdplabs.gitbook.io/sdk/gen-ai-sdk/tutorials/inference/lm-invoker/output-transformer.md)
- [Input Transformer](https://gdplabs.gitbook.io/sdk/gen-ai-sdk/tutorials/inference/lm-invoker/input-transformer.md)
- [QueryTransformerEvaluator](https://gdplabs.gitbook.io/sdk/gen-ai-sdk/tutorials/evaluation/evaluator-scorer/querytransformerevaluator.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://gdplabs.gitbook.io/sdk/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://gdplabs.gitbook.io/sdk/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/sdk/gen-ai-sdk/tutorials/retrieval/query-transformer.md`)
- Use `Accept: text/markdown` header for content negotiation