Pick-and-place is one of the fundamental tasks in robotics research. However,
the attention has been mostly focused on the ``pick'' task, leaving the
``place'' task relatively unexplored. In this paper, we address the problem of
placing objects in the context of a teleoperation framework. Particularly, we
focus on two aspects of the place task: stability robustness and contextual
reasonableness of object placements. Our proposed method combines
simulation-driven physical stability verification via real-to-sim and the
semantic reasoning capability of large language models. In other words, given
place context information (e.g., user preferences, object to place, and current
scene information), our proposed method outputs a probability distribution over
the possible placement candidates, considering the robustness and
reasonableness of the place task. Our proposed method is extensively evaluated
in two simulation and one real world environments and we show that our method
can greatly increase the physical plausibility of the placement as well as
contextual soundness while considering user preferences.

在本文中，我们研究了机器人技术中的一个基本任务 —— 拾取和放置。通过结合仿真驱动的物理稳定性验证和大型语言模型的语义推理能力，我们提出的方法能够在给定上下文信息的情况下，输出放置任务的可能候选位置的概率分布，考虑到任务的稳定性和合理性。我们在两个仿真环境和一个真实环境中对我们的方法进行了广泛评估，并展示了我们的方法在考虑用户偏好的情况下，显著提高了放置任务的物理可信度和上下文合理性。