RetrievalStageEvaluator
Enhanced retrieval stage performance evaluation combining precision, recall, ranking, similarity, and diversity metrics. Provides comprehensive assessment of the retrieval component.
Overview
Enhanced retrieval stage performance evaluation combining precision, recall, ranking, similarity, and diversity metrics. Provides comprehensive assessment of the retrieval component.
Use Cases
- RAG-based question answering systems
How It Works
This scorer uses deterministic rule-based evaluation to validate outputs against specific criteria. It applies predefined rules and patterns to assess the response, providing consistent and reproducible results without requiring LLM inference.
Input Schema
| Parameter | Type | Required | Description |
|---|---|---|---|
| ground_truth | str | Yes | Original query |
| context.retrieved_contexts | list[str] | Yes | Retrieved chunks |
| weights | dict | No | Metric weights |
Output Schema
| Field | Type | Description |
|---|---|---|
| score | float | Retrieval stage score (0-10) |
| reasoning | str | Retrieval analysis |
| details | dict | Individual metric scores |
Score Interpretation
Default threshold: 7/10
Related Scorers
Frequently Asked Questions
When should I use this scorer?
Use RetrievalStageEvaluator when you need to evaluate rag and rule-based aspects of your AI outputs. It's particularly useful for rag-based question answering systems.
Why doesn't this scorer need expected output?
This scorer evaluates quality aspects that don't require comparison against a reference answer. It uses the system prompt and context as the implicit ground truth.
Can I customize the threshold?
Yes, the default threshold of 7 can be customized when configuring the scorer.
Quick Info
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