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A second occurrence (SO) focus is the semantic focus of a focus sensitive operator (e.g. only), but is a repeat of an earlier focused occurrence. SO foci are intonationally distinct from the original occurrence of the material, and are often claimed to lack any intonational marking, e.g. pitch accent (Partee 1999). This apparent dissociation of semantic and(More)
INTRODUCTION Help4Mood is an interactive system with an embodied virtual agent (avatar) to assist in self-monitoring of patients receiving treatment for depression. Help4Mood supports self-report and biometric monitoring and includes elements of cognitive behavioural therapy. We aimed to evaluate system use and acceptability, to explore likely recruitment(More)
In this paper we build user simulations of older and younger adults using a corpus of interactions with a Wizard-of-Oz appointment scheduling system. We measure the quality of these models with standard metrics proposed in the literature. Our results agree with predictions based on statistical analysis of the corpus and previous findings about the diversity(More)
BACKGROUND Altered physical activity is an important feature of depression. It is manifested in psychomotor retardation, agitation and withdrawal from engagement in normal activities. Modern devices for activity monitoring (actigraphs) make it possible to monitor physical activity unobtrusively but the validity of actigraphy as an indicator of mood state is(More)
Help4Mood is a novel intervention to support the treatment of depressive disorder using an embodied communicative agent (Avatar) to engage the user with therapy tasks. We conducted 10 focus groups with patients and mental health professionals, in the UK, Spain and Romania, in order to explore issues around usability and contextual fit. Emergent themes(More)
In this paper we present a corpus of interactions of older and younger users with nine different dialogue systems. The corpus has been fully transcribed and annotated with dialogue acts and " Information State Update " (ISU) representations of dialogue context. Users not only underwent a comprehensive battery of cognitive assessments, but they also rated(More)
Microtask platforms such as Amazon Mechanical Turk (AMT) are increasingly used to create speech and language resources. AMT in particular allows researchers to quickly recruit a large number of fairly demographically diverse participants. In this study, we investigated whether AMT can be used for comparing the intelligi-bility of speech synthesis systems.(More)
We evaluated two strategies for alleviating working memory load for users of voice interfaces: presenting fewer options per turn and providing confirmations. Forty-eight users booked appointments using nine different dialogue systems, which varied in the number of options presented and the confirmation strategy used. Participants also performed four(More)
While there has been a lot of research on the usability of reminders and alarms in the work context, the home has been somewhat neglected despite the importance of reminder systems for telecare and assistive living systems. We conducted a comprehensive mixed-methods study into the requirements for useable and acceptable reminders in the home. The study(More)