Technical GlossaryNatural Language Processing

Paraphrase Detection

The task of determining whether two expressions carry the same or very similar meaning despite surface differences.

Paraphrase detection can be viewed as a more decision-oriented form of semantic similarity. It is especially important in question clustering, customer-support data, deduplication, and information consolidation pipelines. Because it seeks semantic equivalence rather than just broad similarity, it imposes sharper boundaries. Strong paraphrase systems contribute significantly to user experience and data efficiency.