DexForce: the intent behind a demonstrated path

Is observed position the intended action?

During contact, a person may apply force without moving an object. If observed position alone becomes the action target, the intent to push disappears. DexForce constructs force-informed action representations from kinesthetic teaching, where people guide the robot directly.

Changing what counts as the action target.

The paper reports 76% average success across six real tasks with force-informed actions, while its contact-unaware action baseline rarely succeeded. The comparison is about how actions are constructed from demonstrations, not simply the effect of attaching a force sensor at inference.

Record the outcome. Keep the intent.

This work prompts us to store operator commands separately from the robot’s actual response. Intended pushing direction, observed motion, and measured contact force are different. Intended force or stiffness must also be identified as directly measured or calculated by a controller.

Questions to test next.

Does the action representation hold across different stiffness and friction? How sensitive is it to a person’s teaching habits? Extending kinesthetic force representations to bilateral teleoperation also requires examining the master device and controller.

Keep exploring