Thursday, February 27, 2014

IS2140_Reading notes_Unit 8


1, Information visualization

Information visualization attempts to provide visual depictions of very large information spacesThe main information visualization techniques include brushing and linking, panning and zooming, focus-plus-context, magic lenses, and the use of animation to retain context and help make occluded information visible.

2, Tools of computer interface design: windows, menus, icons, dialog boxes, and so on.

3, Brushing and linking refers to the connecting of two or more views of the same data, such that a change to the representation in one view affects the representation in the other views as well.

Panning and zooming refers to the actions of a movie camera that can scan sideways across a scene (panning) or move in for a close up or back away to get a wider view (zooming).

Magic lenses are directly manipulable transparent windows that, when overlapped on some other data type, cause a transformation to be applied to the underlying data, thus changing its appearance.

4, Important differences for information access interfaces include relative spatial ability and memory, reasoning abilities, verbal aptitude, and (potentially) personality differences.

5, Models of Interaction

Most accounts of the information access process assume an interaction cycle consisting of query specification, receipt and examination of retrieval results, and then either topping or reformulating the query and repeating the process until a perfect result set is found.

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