Chrf

Metric

DashAI.back.metrics.translation.Chrf

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A class for calculating CHRF scores between source and target sentences.

CHRF (Character n-gram F-score) is a metric used for evaluating the quality of machine-translated text by comparing it to reference translations at the character level.

References

• [1] https://en.wikipedia.org/wiki/CHRF
• [2] https://lightning.ai/docs/torchmetrics/stable/text/chrf_score.html

Methods

score(source_sentences: 'DashAIDataset', target_sentences: 'np.ndarray') -> float

Defined on Chrf

Calculate the CHRF score between source and target sentences.

Parameters

source_sentences : DashAIDataset

Sentences in the original language.

target_sentences : ndarray

Sentences in the target language.

Returns

float

The calculated CHRF score ranging between 0 and 1.

get_metadata(cls: 'BaseMetric') -> Dict[str, Any]

Defined on BaseMetric

Get metadata values for the current metric.

Returns

Dict[str, Any]

Dictionary with the metadata

Compatible with

• TranslationTask