TY - CHAP U1 - Konferenzveröffentlichung A1 - Mitrevski, Alex A1 - Kuestenmacher, Anastassia A1 - Thoduka, Santosh A1 - Plöger, Paul G. T1 - Improving the Reliability of Service Robots in the Presence of External Faults by Learning Action Execution Models T2 - IEEE International Conference on Robotics and Automation (ICRA), Singapore, May 29 - June 3, 2017 N2 - While executing actions, service robots may experience external faults because of insufficient knowledge about the actions' preconditions. The possibility of encountering such faults can be minimised if symbolic and geometric precondition models are combined into a representation that specifies how and where actions should be executed. This work investigates the problem of learning such action execution models and the manner in which those models can be generalised. In particular, we develop a template-based representation of execution models, which we call delta models, and describe how symbolic template representations and geometric success probability distributions can be combined for generalising the templates beyond the problem instances on which they are created. Our experimental analysis, which is performed with two physical robot platforms, shows that delta models can describe execution-specific knowledge reliably, thus serving as a viable model for avoiding the occurrence of external faults. SN - 978-1-5090-4633-1 SB - 978-1-5090-4633-1 U6 - https://doi.org/10.1109/ICRA.2017.7989489 DO - https://doi.org/10.1109/ICRA.2017.7989489 N1 - Abstract provided by the author. SP - 4256 EP - 4263 PB - IEEE ER -