Parental scaffolding as a bootstrapping mechanism for learning grasp affordances and imitation skills

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2015-06-01

Author

Ugur, Emre
Nagai, Yukie
Celikkanat, Hande
ÖZTOP, ERHAN

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Parental scaffolding is an important mechanism that speeds up infant sensorimotor development. Infants pay stronger attention to the features of the objects highlighted by parents, and their manipulation skills develop earlier than they would in isolation due to caregivers' support. Parents are known to make modifications in infant-directed actions, which are often called "motionese". 7 The features that might be associated with motionese are amplification, repetition and simplification in caregivers' movements, which are often accompanied by increased social signalling. In this paper, we extend our previously developed affordances learning framework to enable our hand-arm robot equipped with a range camera to benefit from parental scaffolding and motionese. We first present our results on how parental scaffolding can be used to guide the robot learning and to modify its crude action execution to speed up the learning of complex skills. For this purpose, an interactive human caregiver-infant scenario was realized with our robotic setup. This setup allowed the caregiver's modification of the ongoing reach and grasp movement of the robot via physical interaction. This enabled the caregiver to make the robot grasp the target object, which in turn could be used by the robot to learn the grasping skill. In addition to this, we also show how parental scaffolding can be used in speeding up imitation learning. We present the details of our work that takes the robot beyond simple goal-level imitation, making it a better imitator with the help of motionese.

Subject Keywords

Developmental robotics, Affordance, Imitation, Parental scaffolding, Motionese

URI

https://hdl.handle.net/11511/67788

Journal

ROBOTICA

DOI

https://doi.org/10.1017/s0263574714002148

Collections

Computer Aided Design, Manufacturing and Robotics Research and Application Center (BİLTİR), Article

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Citation Formats

E. Ugur, Y. Nagai, H. Celikkanat, and E. ÖZTOP, “Parental scaffolding as a bootstrapping mechanism for learning grasp affordances and imitation skills,” ROBOTICA, pp. 1163–1180, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67788.