Building generalist agents that can accomplish many goals in rich open-ended
environments is one of the research frontiers for reinforcement learning. A key
limiting factor for building generalist agents with RL has been the need for a
large number of reward functions for achieving different goals. We investigate
the feasibility of using off-the-shelf vision-language models, or VLMs, as
sources of rewards for reinforcement learning agents. We show how rewards for
visual achievement of a variety of language goals can be derived from the CLIP
family of models, and used to train RL agents that can achieve a variety of
language goals. We showcase this approach in two distinct visual domains and
present a scaling trend showing how larger VLMs lead to more accurate rewards
for visual goal achievement, which in turn produces more capable RL agents.

使用视觉 - 语言模型（VLMs）作为强化学习代理的奖励来源的可行性研究，展示了从 CLIP 模型家族中得到各种语言目标的视觉成就奖励，并用于训练能够实现各种语言目标的 RL 代理，通过两个不同的视觉领域展示了这种方法，并呈现了更大的 VLMs 趋势，以更准确的视觉目标成就奖励，从而产生更有能力的 RL 代理。