A statistical translation method that builds output from likely phrase chunks.
Phrase-Based SMT is fridge-magnet translation. It slides little word chunks around and picks the mix with the best score.
It powered many translation systems before neural AI took over. It often used Beam Search to find a high-scoring sentence.
SMT
Phrase-Based SMT was a main branch of SMT, built around phrase chunks.
MT
Phrase-Based SMT helped MT move from hand-made rules to data.
BLEU
BLEU was a common ruler for tuning it and ranking results.
Beam Search
Beam Search helped it find a high-scoring mix of phrase chunks.