RAG-007RAG · Staying truthfullayaeval.StrictGroundedness

Strict Groundedness

A yes or no: is every claim proven? One gap fails it.

SOURCESANSWERHotel Lumière$180 a nightNear the LouvreStay at LumièreIt's $180 a nightNear the LouvreAll claims proven
Simulation state:
When it passes

All claims proven.

Threshold satisfied: evaluation score >= 0.50.

When it fails

One claim unproven — fail.

Violation detected: execution flagged for human review or fallback routing.

SDK Specification

ParameterValueDescription
ClassStrictGroundednessPython evaluator class in layaeval
Required Fields"retrieved_context", "response"Arguments expected in the call signature
Default Threshold>= 0.50Passes when quality score is at or above this value
CategoryRAG EvaluationStaying truthful (Does every line come from the pages, with nothing made up?)

Python Example

pip install layaeval
strict-groundedness.py
1from layaeval import StrictGroundedness
2
3metric = StrictGroundedness(threshold=0.50) # passes at or above 0.50
4
5res = metric(
6 retrieved_context="Paris is the capital of France, with 2.1M residents.",
7 response="Paris is the capital of France.",
8)
9
10print(res.passed, res.value, res.confidence)

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