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This thesis presents work done during the last ten years on developing five multimodal spoken dialogue systems, and the empirical user studies that have been conducted with them. The dialogue systems have been multimodal, giving information both verbally with animated talking characters and graphically on maps and in text tables. To be able to study a wider(More)
A general overview of the AdApt project and the research that is performed within the project is presented. In this project various aspects of human-computer interaction in a multimodal conversational dialogue systems are investigated. The project will also include studies on the integration of user/system/dialogue dependent speech recognition and(More)
When designing multimodal dialogue systems allowing speech as well as graphical operations, it is important to understand not only how people make use of the different modalities in their utterances, but also how the system might influence a user's choice of modality by its own behavior. This paper describes an experiment in which subjects interacted with(More)
This paper presents an overview of methods that can be used to collect and analyse data on user responses to spoken dialogue system components intended to increase human-likeness, and to evaluate how well the components succeed in reaching that goal. Wizard-of-Oz variations, human–human data manipulation, and micro-domains are discussed in this context, as(More)
The study reported in this paper is based on results from a Swedish database of spontaneous computer-directed speech. This database was investigated to determine how people adapt their language when they interact with computers. A spoken dialogue system with an animated agent, August, was installed in a public location in downtown Stockholm. Members of the(More)
This paper describes experiences from the development of a Swedish spoken dialogue system with a talking agent, August. The system was exposed to the general public at a very early stage. Apart from describing the system and its components this paper discusses the problems encountered during the setup and describe possible solutions considered. The system(More)
This paper investigates the prosodic patterns of non-lexical response tokens in a Swedish call-in radio show. The feedback of a professional speaker was investigated to give insight in how to build a simulated active listener that could encourage its users to continue talking. Possible domains for such systems include customer care and second language(More)
Spoken language systems are highly complex and teaching of students in this subject matter and in the underlying technologies could benefit greatly from instructional software. The aim of this work has been to give students hands-on experience via a fully functioning spoken dialogue system as a teaching aid. This dialogue system was built using our toolkit(More)
This paper examines feedback strategies in a Swedish corpus of multimodal human–computer interaction. The aim of the study is to investigate how users provide positive and negative feedback to a dialogue system and to discuss the function of these utterances in the dialogues. User feedback in the AdApt corpus was labeled and analyzed, and its distribution(More)