scholarly journals Visual Map Algebra: a direct-manipulation user interface for GIS

1995 ◽  
pp. 235-253 ◽  
Author(s):  
Max J. Egenhofer ◽  
H. Tom Bruns
Author(s):  
Eduardo Castro e Costa ◽  
Joaquim Jorge ◽  
Aaron D. Knochel ◽  
José Pinto Duarte

AbstractIn mass customization, software configurators enable novice end-users to design customized products and services according to their needs and preferences. However, traditional configurators hardly provide an engaging experience while avoiding the burden of choice. We propose a Design Participation Model to facilitate navigating the design space, based on two modules. Modeler enables designers to create customizable designs as parametric models, and Navigator subsequently permits novice end-users to explore these designs. While most parametric designs support direct manipulation of low-level features, we propose interpolation features to give customers more flexibility. In this paper, we focus on the implementation of such interpolation features into Navigator and its user interface. To assess our approach, we designed and performed user experiments to test and compare Modeler and Navigator, thus providing insights for further developments of our approach. Our results suggest that barycentric interpolation between qualitative parameters provides a more easily understandable interface that empowers novice customers to explore the design space expeditiously.


AI Magazine ◽  
2009 ◽  
Vol 30 (4) ◽  
pp. 16 ◽  
Author(s):  
Henry Lieberman

This is an opinion piece about the relationship between the fields of human-computer interaction (HCI), and artificial intelligence (AI). The ultimate goal of both fields is to make user interfaces more effective and easier to use for people. But historically, they have disagreed about whether "intelligence" or "direct manipulation" is the better route to achieving this. There is an unjustified perception in HCI that AI is unreliable. There is an unjustified perception in AI that interfaces are merely cosmetic. This disagreement is counterproductive.This article argues that AI's goals of intelligent interfaces would benefit enormously by the user-centered design and testing principles of HCI. It argues that HCI's stated goals of meeting the needs of users and interacting in natural ways, would be best served by application of AI. Peace.


Author(s):  
Pei-Luen Patrick Rau ◽  
Jia-Wen Hsu

This study investigates the effects of interaction devices on performance of using WWW user interface for older users, and ways to design appropriate user interfaces to enhance browsing and searching performance for older users. Two experiments were designed and conducted to test two hypotheses, that for older novice users, browsing and searching performance and attitudes will be better with a direct manipulation devices rather than with indirect manipulation device. The results indicated that older users using touch screen were faster and less frustrated than older users using voice control and mouse. Moverover, older users using touch screen were faster and less frustrated than older users using voice control and mouse, and older users using mouse and keyboard were less frustrated than older users using voice control


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