rag-eval-lite 0.1.2

Lightweight evaluation metrics for RAG (Hit@k, Recall@k, Precision@k, MRR, nDCG, and more)

rag-eval-lite

Lightweight retrieval evaluation metrics for RAG systems.

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Install

pip install rag-eval-lite

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Usage

from rag_eval import evaluate_dataset

results = evaluate_dataset(data, k=3)
print(results)

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Input Format

Each item in data must be:

{
  "question": "string",
  "golden_chunk_ids": ["chunk_1"],
  "retrieved_chunk_ids": ["chunk_1", "chunk_3", "chunk_7"]
}

• golden_chunk_ids: ground truth relevant chunks
• retrieved_chunk_ids: retriever output (ordered by rank)

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Output

{
  "hit@k": float,
  "precision@k": float,
  "recall@k": float,
  "mrr": float,
  "ndcg@k": float,
  "num_failures": int,
  "failures": [...]
}

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Notes

• Order of retrieved chunks matters
• Supports single and multi-chunk evaluation
• Failures include full debug info