Downstream Task In Reinforcement Learning

Question

I have read some paragraph on Self supervision based reinforcement learning which just enables agent to learn without human supervision and effective strategy for unlabeled dataset training. But I found the "Downstream task" many times. Now, What does it mean by "Downstream task" in Reinforcement Learning?

Answer 1

A downstream task is a task which will be defined via task specific rewards. This is usually done after doing unsupervised RL pretraining for a long time.

Self-Supervision is usually necessary for this Pre-Training,