Towards adaptive dialogue systems for assistive living environments
Proceedings of the companion publication of the 2013 international conference on Intelligent user interfaces companion
An adaptive dialogue system for assessing post traumatic stress disorder
Proceedings of the 6th International Conference on PErvasive Technologies Related to Assistive Environments
An assistive object manipulation system
Proceedings of the 6th International Conference on PErvasive Technologies Related to Assistive Environments
| Hi-index | 0.00 |
Dialogue Systems (DS) have been rapidly evolving during the last few years. In order for them to be able to adapt to their surroundings and to individual users, researchers have focused on adaptation techniques, giving rise to the field of Adaptive Dialogue Systems (ADS). One important sub field of ADS is learning what the system should say or do next. Most of the work done in this direction assumes the system performs simple actions, rather than behaviours described by sub-dialogues, i.e. complex actions. To this end we propose a novel online algorithm that ranks complex actions according to their performance and selects the top-k performing ones. To the best of our knowledge there is currently no work describing methods to learn policies for complex actions in an online fashion. We also propose an online algorithm able to estimate the effects of system actions on the user's state, in order to make more informed decisions about which action to take and guide the learning algorithm towards a desired final user state. Our results show that the proposed complex action learning algorithm outperforms simple Hierarchical Reinforcement Learning algorithms and that we are able to successfully estimate the effect an action will have on the user's state, using emotional states as a case study.