Internet-based guided self-therapy systems provide a novel method for Post-Traumatic Stress Disorder patients to follow therapy at home with the assistance of a virtual coach. One of the main challenges for such a coach is assisting patients with recollecting their traumatic memories, a vital part of therapy. In this paper, an ontology-based question system capable of posing appropriate and personalized questions is presented. This method was tested in an experiment with nonpatients (n = 24), where it was compared with a non-ontology-based system which did not provide personalization. Results show that people take more time answering questions with the ontology-based system and use more words describing properties, such as adjectives. This indicates that the ontology-based system facilitates more thoughtful and detailed memory-recollection.

Dialogue system, Memories, Ontology, PTSD, Virtual coach
dx.doi.org/10.1007/978-3-319-21996-7_2, hdl.handle.net/1765/86162
Erasmus University Rotterdam

Tielman, M, van Meggelen, M, Neerincx, M.A, & Brinkman, W.-P. (2015). An ontology-based question system for a virtual coach assisting in trauma recollection. doi:10.1007/978-3-319-21996-7_2