Robot self/other distinction: active inference meets neural networks learning in a mirror

• URL: http://arxiv.org/abs/2004.05473v1
• Date: Sat, 11 Apr 2020 19:51:47 GMT
• Title: Robot self/other distinction: active inference meets neural networks learning in a mirror
• Authors: Pablo Lanillos and Jordi Pages and Gordon Cheng
• Abstract summary: We present an algorithm that enables a robot to perform non-appearance self-recognition on a mirror. The algorithm combines active inference, a theoretical model of perception and action in the brain, with neural network learning. Experimental results on a humanoid robot show the reliability of the algorithm for different initial conditions.
• Score: 9.398766540452632
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Self/other distinction and self-recognition are important skills for interacting with the world, as it allows humans to differentiate own actions from others and be self-aware. However, only a selected group of animals, mainly high order mammals such as humans, has passed the mirror test, a behavioural experiment proposed to assess self-recognition abilities. In this paper, we describe self-recognition as a process that is built on top of body perception unconscious mechanisms. We present an algorithm that enables a robot to perform non-appearance self-recognition on a mirror and distinguish its simple actions from other entities, by answering the following question: am I generating these sensations? The algorithm combines active inference, a theoretical model of perception and action in the brain, with neural network learning. The robot learns the relation between its actions and its body with the effect produced in the visual field and its body sensors. The prediction error generated between the models and the real observations during the interaction is used to infer the body configuration through free energy minimization and to accumulate evidence for recognizing its body. Experimental results on a humanoid robot show the reliability of the algorithm for different initial conditions, such as mirror recognition in any perspective, robot-robot distinction and human-robot differentiation.

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