Jul 29

There is an old English folk saying that goes, "If you can't stand the heat, get out of the kitchen." I have a different approach: Do something about the heat. The folk saying would have us accept the poor designs of the world. Why? After all, if people were responsible for the "heat" in the first place, then people should be able to do something about it. Is the kitchen too hot? Redesign it.

-- Don Norman

 
 

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Scott A. Venckus

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Publications by Scott A. Venckus (bibliography)

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1996
 
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Zanden, Brad Vander and Venckus, Scott A. (1996): An Empirical Study of Constraint Usage in Graphical Applications. In: Kurlander, David, Brown, Marc and Rao, Ramana (eds.) Proceedings of the 9th annual ACM symposium on User interface software and technology November 06 - 08, 1996, Seattle, Washington, United States. pp. 137-146.

One-way constraints have been widely incorporated in research toolkits for constructing graphical applications. However, although a number of studies have examined the performance of these toolkits' constraint satisfaction algorithms, there have not been any empirical studies that have examined how programmers use constraints in actual applications. This paper reports the results of a study intended to address these matters. Seven graphical applications were chosen for their diversity and profiling information was gathered about their use of constraints. The data reveal that constraint networks tend to be modular, that is, divided into a number of small, independent sets of constraints rather than one monolithic set of constraints. This finding suggests that constraint satisfaction algorithms should be able to resatisfy constraints rapidly after a change to one or more variables. It also suggests that debugging constraints should not be unduly burdensome on a programmer since the number of constraints that must be examined to find the source of an error is not terribly large. Overall, the results of this study should provide a repository of data that will be useful in directing future research on optimizing constraint solvers and developing effective debugging techniques.

© All rights reserved Zanden and and/or ACM Press

 
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Jul 29

There is an old English folk saying that goes, "If you can't stand the heat, get out of the kitchen." I have a different approach: Do something about the heat. The folk saying would have us accept the poor designs of the world. Why? After all, if people were responsible for the "heat" in the first place, then people should be able to do something about it. Is the kitchen too hot? Redesign it.

-- Don Norman

 
 

Featured chapter

Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess

User Experience and Experience Design !

 
 

Our Latest Books

Kumar and Herger 2013: Gamification at Work: Designing Engaging Business Software...
by Janaki Mythily Kumar and Mario Herger

 
Start reading

Whitworth and Ahmad 2013: The Social Design of Technical Systems: Building technologies for communities...
by Brian Whitworth and Adnan Ahmad

 
Start reading

Soegaard and Dam 2013: The Encyclopedia of Human-Computer Interaction, 2nd Ed....
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

Help us help you!