Joëlle Coutaz

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This paper describes a framework that serves as a reference for classifying user interfaces supporting multiple targets, or multiple contexts of use in the field of context-aware computing. In this framework, a context of use is decomposed into three facets: the end users of the interactive system, the hardware and software computing platform with which the(More)
We propose the CARE properties as a simple way of characterising and assessing aspects of multimodal interaction: the Complementarity, Assignment, Redundancy, and Equivalence that may occur between the interaction techniques available in a multimodal user interface. We provide a formal definition of these properties and use the notion of compatibility to(More)
Multimodal interaction enables the user to employ different modalities such as voice, gesture and typing for communicating with a computer. This paper presents an analysis of the integration of multiple communication modalities within an interactive system. To do so, a software engineering perspective is adopted. First, the notion of “multimodal(More)
This paper introduces the notion of plasticity, a new property of interactive systems that denotes a particular type of user interface adaptation. Plasticity is the capacity of a user interface to withstand variations of both the system physical characteristics and the environment while preserving usability. Typically, a ‘plastic’ electronic agenda would(More)
Mobility coupled with the development of a wide variety of access devices has engendered new requirements for HCI such as the ability of user interfaces (UIs) to adapt to different contexts of use. We define a context of use as the set of values of variables that characterize the computational device(s) used for interacting with the system as well as the(More)
This paper defines the problem space of distributed, migratable and plastic user interfaces, and presents CAMELEON-RT1, a technical answer to the problem. CAMELEON-RT is an architecture reference model that can be used for comparing and reasoning about existing tools as well as for developing future run time infrastructures for distributed, migratable, and(More)
This article reports our reflection on software architecture modelling for multi-user systems (or groupware). First, we introduce the notion of software architecture and make explicit the design steps that most software designers in HCI tend to blend in a fuzzy way. Building on general concepts and practice from main stream software engineering, we then(More)
The increasing proliferation of computational devices has introduced the need for applications to run on multiple platforms in different physical environments. Providing a user interface specially crafted for each context of use is extremely costly and may result in inconsistent behavior. User interfaces must now be capable of adapting to multiple sources(More)