By Heidi Lam, Tamara Munzner
Showing a number of degrees of knowledge visually has been proposed to deal with the problem of constrained display area. even supposing many earlier empirical reviews have addressed diversified features of this question, the knowledge visualization study group doesn't at present have a truly articulated consensus on how, whilst, or perhaps if showing facts at a number of degrees is valuable. To shed extra gentle in this advanced subject, we performed a scientific evaluation of twenty-two present multi-level interface stories to extract high-level layout instructions. To facilitate dialogue, we forged our research findings right into a four-point choice tree: (1) while are multi-level monitors worthwhile? (2) What may still the better visible degrees show? (3) may still the several visible degrees be displayed at the same time, or separately? (4) should still the visible degrees be embedded in one reveal, or separated into a number of monitors? Our research ended in 3 layout instructions: (1) the variety of degrees in demonstrate and knowledge should still fit; (2) excessive visible degrees should still simply exhibit task-relevant info; (3) simultaneous reveal, instead of temporal switching, is acceptable for projects with multi-level solutions. desk of Contents: creation / Terminology / technique / precis of reports / selection 1: unmarried or Multi-level Interface? / choice 2: find out how to Create the High-Level screens? / determination three: Simultaneous or Temporal screens of the a number of visible degrees / choice four: the best way to Spatially set up the visible degrees, Embedded or Separate? / obstacles of research / layout concepts / dialogue and destiny paintings
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Extra info for A Guide to Visual Multi-Level Interface Design from Synthesis of Empirical Study Evidence
Fishnet] studied information searches on web pages Baudisch et al. . Their multilevel interfaces semantically highlighted and preserved readability of keywords relevant to the tasks. These keywords were concentrated in smaller display spaces by reducing font sizes of surrounding text. Such interfaces resulted in better participant performances as long as they still provided task-required layout information. For example, participants were faster when using either of their multi-level interfaces for the Outdated task, and when using their web-column preserving embedded interface for the Product-choice task.
Participants expressed distrust, both in their satisfaction feedback where they rated the embedded interface as confusing, and in their comments indicating that they “did not like to depend on an algorithm to determine which parts of the documents should be readable” (p. 142). This problem may be worse with semantic filtering, where object visibility depends on the semantic relatedness of the object to the focus datum, rather than the geometric distance between screen displays. Selection of displayable context based on syntactic distance between the data point and the focus is arguably easier to predict than semantic selection.
We therefore looked at four proposed uses of high-level displays based on the published literature. We found that study results support two proposed claims concerning separate interfaces: high-level views provide navigation shortcuts and show overall data structure. We were unable to find strong support for using high-level regions in embedded interfaces to aid orientation or to provide meaning for data comparison. 1 SUPPORTED: HIGH-LEVEL VIEWS IN SEPARATE INTERFACES PROVIDE NAVIGATION SHORTCUTS Information shown in the high-level views can facilitate navigation by providing long-distance links, thus “decreasing the traversal diameter of the structure” in navigation Furnas .