BART was introduced by which organization?

• A. Microsoft Research
• B. Google Brain
• C. OpenAI
• D. Facebook AI

Answer: (D)

Where a model comes from helps you place its design and purpose in context. BART, which stands for Bidirectional and Auto-Regressive Transformer, was introduced by Facebook AI Research (FAIR) in 2019. The idea behind it is a denoising sequence-to-sequence pretraining objective that combines a bidirectional encoder with an autoregressive decoder, trained to reconstruct the original text from corrupted input. This setup yields strong performance on both understanding and generation tasks, reflecting its FAIR origins. While other labs like Microsoft Research, Google Brain, and OpenAI have their own influential models, BART is the contribution of Facebook AI Research.