Glossary – Letter B

Backpropagation

A learning process used in neural networks to adjust internal weights after comparing predictions with expected results.

Baseline System

A reference translation system used for comparison when evaluating improvements or alternative models.

Beam Search

A decoding method used in AI language models and neural machine translation to evaluate several candidate word sequences before selecting the most likely output.

BERTScore

A metric comparing contextual embeddings of a machine translation and a human reference.

Bilingual Corpus

A collection of aligned texts in two languages used to train, evaluate, or improve translation systems and language technologies.

BLEU

A traditional translation metric measuring n-gram overlap between machine output and a reference.