id: 02086748
dt: a
an: 02086748
au: Bennett, David J.
ti: Effects of navigation and position on task when presenting diagrams.
so: Hegarty, Mary (ed.) et al., Diagrammatic representation and inference. 2nd
    international conference, Diagrams 2002, Callaway Gardens, GA, USA,
    April 18‒20, 2002. Proceedings. Berlin: Springer (ISBN
    3-540-43561-1). Lect. Notes Comput. Sci. 2317, 161-175 (2002).
py: 2002
pu: Berlin: Springer
la: EN
cc: 
ut: 
ci: 
li: http://link.springer.de/link/service/series/0558/bibs/2317/23170161.htm
ab: Summary: This paper questions how we could and should present diagrams to
    blind people using computer-generated sound. Using systems that present
    information about one part of the diagram at a time, rather than the
    whole, leads to two problems. The first problem is how to present
    information so that users can integrate the information into a coherent
    overall picture. The second is how to select the area to be presented.
    This is looked at by using a system that presents graphs representing
    central heating system schematics. The system presents information by
    user choice through either a hierarchical split of information and
    navigation system, or a connection oriented split of information and
    navigation system. Further, we have a split as to whether a simple
    system of presenting location of nodes is used, or not. Tasks,
    classified as being based on hierarchical information or
    connection-based information, were set using the system and the effect
    of the different models was recorded. It was found that there was a
    match of task to navigation system, but that presentation of position
    had no discernable effect.
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