At each time t, the agent receives an observation o t {\displaystyle o_{t}} , which typically includes the reward r t {\displaystyle r_{t}} .
在每一个时间 t {\displaystyle t} ，主体接收到一个观测 o t {\displaystyle o_{t}} ，通常其中包含奖励 r t {\displaystyle r_{t}} 。