Greene et al. (2000, p. 381) argue that a good overview “provides users with an
immediate appreciation for the size and extent of the collection of objects the overview
represents.” Thus the way that people perform an overview of an information space
may be influenced by the different types of tasks they wish to accomplish there, for
example monitoring, navigating, and planning. Hornbæk and Hertzum (2011, p. 520)
explain that “understanding and supporting the active creation and continuous
recreation of awareness appear to be major challenges for future research in
information visualization.” They then suggest three areas to focus on in research
related to acquiring an overview; first, the role of details in obtaining an overview;
whether an overview develops from a primary perception of global or local features;
second, how the gaining of awareness in an information space allocates for user dealing
with the visuals in order to survey the information space; and third, the user’s process
of integration; the integration involved in upholding a consistent mental picture of an
changing situation proposes that overviews might not only disseminate information
but also seek to incorporate with multiple pieces of information.
Information visualization is an important component of visual analysis, and an
effective overview is one of the more important functions in information visualization
as it involves a user’s spatial visualization and spatial memory skills. As information
searching is a task-oriented job, it requires that the users have associative memory that
matches the memory of the task at hand. The role played by each of the three cognitive
abilities-associative memory, visual memory, visualization ability, when children are
seeking information in a virtual information space has yet to be explained.
Greene et al. (2000, p. 381) argue that a good overview “provides users with animmediate appreciation for the size and extent of the collection of objects the overviewrepresents.” Thus the way that people perform an overview of an information spacemay be influenced by the different types of tasks they wish to accomplish there, forexample monitoring, navigating, and planning. Hornbæk and Hertzum (2011, p. 520)explain that “understanding and supporting the active creation and continuousrecreation of awareness appear to be major challenges for future research ininformation visualization.” They then suggest three areas to focus on in researchrelated to acquiring an overview; first, the role of details in obtaining an overview;whether an overview develops from a primary perception of global or local features;second, how the gaining of awareness in an information space allocates for user dealingwith the visuals in order to survey the information space; and third, the user’s processof integration; the integration involved in upholding a consistent mental picture of anchanging situation proposes that overviews might not only disseminate informationbut also seek to incorporate with multiple pieces of information.Information visualization is an important component of visual analysis, and aneffective overview is one of the more important functions in information visualizationas it involves a user’s spatial visualization and spatial memory skills. As informationsearching is a task-oriented job, it requires that the users have associative memory thatmatches the memory of the task at hand. The role played by each of the three cognitiveabilities-associative memory, visual memory, visualization ability, when children areseeking information in a virtual information space has yet to be explained.
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