Multifeature Systems: The CARE Properties and Their Impact on Software Design. Nigay, L. & Coutaz, J. In Multimedia Interfaces: Research and Applications, chapter 9, 1997. AAAI Press.
abstract   bibtex   
Multifeature user interfaces support multiple interaction techniques which may be used sequentially or concurrently, and independently or combined synergistically (Nigay, Coutaz 1993a). New interaction aspects must be considered, such as the fusion and fission of information, and the nature of temporal constraints. The availability of multiple interaction techniques opens a new world of experience, but our understanding of how they relate to each other is still unclear. We propose here a unified framework based on the notions of interaction language and physical device. The framework illuminates the relationship between interaction languages and physical devices. Such relationships are useful for eliciting design criteria, for classifying existing multifeature systems (Nigay 1994) and for evaluating the usability of a system. In this paper, we focus on usability aspects and show how the usability of a system can be correlated with the relationships that the system is able to maintain between the interaction languages and the devices it supports. We then depart from the HCI perspective to consider the implications
@inproceedings{nigay_multifeature_1997,
	title = {Multifeature {Systems}: {The} {CARE} {Properties} and {Their} {Impact} on {Software} {Design}},
	shorttitle = {Multifeature {Systems}},
	abstract = {Multifeature user interfaces support multiple interaction techniques which may be used sequentially or concurrently, and independently or combined synergistically (Nigay, Coutaz 1993a). New interaction aspects must be considered, such as the fusion and fission of information, and the nature of temporal constraints. The availability of multiple interaction techniques opens a new world of experience, but our understanding of how they relate to each other is still unclear. We propose here a unified framework based on the notions of interaction language and physical device. The framework illuminates the relationship between interaction languages and physical devices. Such relationships are useful for eliciting design criteria, for classifying existing multifeature systems (Nigay 1994) and for evaluating the usability of a system. In this paper, we focus on usability aspects and show how the usability of a system can be correlated with the relationships that the system is able to maintain between the interaction languages and the devices it supports. We then depart from the HCI perspective to consider the implications},
	booktitle = {Multimedia {Interfaces}: {Research} and {Applications}, chapter 9},
	publisher = {AAAI Press},
	author = {Nigay, Laurence and Coutaz, Joëlle},
	year = {1997}
}

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