Have the `facebook/blenderbot-xxx` checkpoints already been trained on the BST Tasks?

The Blenderbot paper describes a “pretrained generative” model trained on the pushshift.io Reddit dataset. This model is also referred to as “pushshift.io Reddit Generative”.

They go on to fine-tune this model on the “BST tasks” (ConvAI2, Empathetic Dialogues, Wizard of Wikipedia, Blended Skill Talk) and call the resulting model “BST Generative”.

Are the checkpoints facebook/blenderbot-xxx the “pretrained generative” model or “BST Generative” model?

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