We report about a WOZ experiment with a carefully designed scenario that allows to investigate how users interact with a companion system in a mundane situation with the need for planning, re-planning and strategy change. The data collection from the experiments comprises multimodal records (audio, video, biopsychological parameters) and transcripts of the verbal interaction, and all subjects fill out a battery of well established psychometric questionnaires about various aspects especially of their personality. This will allow to correlate observed behaviour and detected affects and emotions with measured aspects of the personality of subjects and is expected to serve as a basis for defining a typology of users. In addition, a subgroup of the subjects takes part in semiformal in-depth interviews that focus on retrospective reflexion of the users' subjective experience during the experiments and especially on the intentionality that users ascribed to the system during the course of interaction.
Wizard of Oz (WOZ) systems and WOZ experiments are an important tool for basic and applied research in HCI. We report about using SEMAINE as a flexible component based middleware with a loose coupling of components as software infrastructure for WOZ experiments in human companion interaction. We focus on our experimental WOZ designs, their realisation within the SEMAINE framework and lessons learned from deploying the implemented solutions as the basis for ongoing controlled experiments with 120 subjects.
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