Narayanan, N. H., & Hegarty, M. (1998). On designing comprehensible interactive hypermedia manuals. International Journal of Human-Computer Studies, 48, 267-301.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....interface bugs, or presenting usage statistics in novel ways in documentation. Most designers adopt an appearance oriented approach, and there are many powerful tools to do this that are very good at visual simulation, but which are (and unfortunately have to be) programmed in an ad hoc fashion (Narayanan Hegarty, 1998; Sharp, 1998) So an important aspect is to package the theory into an easy to use IDA to make theoretically sound methods available and acceptable to the design culture; conversely, the ability to undertake real, large scale and complete design projects, with evaluation, would challenge the ....

N. H. NARAYANAN & M. HEGARTY (1998) "On Designing Comprehensible Interactive Hypermedia Manuals," International Journal of Human-Computer Studies, 48(2): 267--301.

....that contribute to the design of effective learning systems [5] Studies show that using multiple forms of media tend to be more successful. Other research into how humans reason using static diagrams to infer dynamic behavior of mechanical devices could be applied to algorithm understanding [7]. Educational research stresses the importance of basing curriculum on learning objectives. Collectively, this body of research suggests that previous attempts at using animation to teach algorithm behavior was unsatisfactory not because of a flaw with animation as a technique, but perhaps because ....

Narayanan, N. H., & Hegarty, M. (1997). On Designing Comprehensible Interactive Hypermedia Manuals. International Journal of Human-Computer

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Narayanan, N. H., & Hegarty, M. (1998). On designing comprehensible interactive hypermedia manuals. International Journal of Human-Computer Studies, 48, 267-301.

....ability to accurately answer questions about the pseudocode (a step wise description of an algorithm using a mixture of natural language and mathematical notation) and operations of the algorithm. Building upon research in cognitive science and human computer interaction on multimedia design [20,21], we have developed an architecture for multimedia presentations of algorithms, called Hypermedia Algorithm Visualization (HalVis) The term visualization suggests a richer process than merely watching an animation, and the term hypermedia reflects the use of multiple media, semantic links and ....

....explanation of the events occurring in the animation. The fourth is a panel of variables that illustrates how their values change as the algorithm executes. These are qualitatively different representations of the same process, intended to help with the construction of a dynamic mental model [20,21]. Occasionally, tickler questions are generated and presented to the learner by this component while the animation is paused. The fourth component is intended to reinforce the learner s mental model by presenting a macro level animation of the algorithm s operation on a much larger data set, ....

N. H. Narayanan & M. Hegarty (1998) On designing comprehensible interactive hypermedia manuals. International Journal of Human-Computer Studies 48, 267-301.

....from earlier systems is that it presents algorithm visualizations rather than algorithm animations. The term visualization suggests a richer process than merely watching an animation, one that leads to the formation of an accurate mental model by the observer of the information being presented [15]. We define the term visualization, as used in this paper, to include (i) information presented in various forms of media such as animation, text, static diagrams, aural narratives, video and more, ii) appropriate temporal and spatial synchronization and serialization of these multimedia ....

.... Theoretical foundations of the our approach to algorithm visualization are the following: i) a comprehension model derived from research on how humans reason using static diagrams to infer the dynamic behavior of mechanical devices and its application to the design of hypermedia machine manuals [15], ii) recent research in cognitive and educational domains on how multimedia and hypermedia can improve student comprehension [7, 13, 18] and (iii) extant research on the design and evaluation of algorithm animations [e.g. 14, 18, 21; see 12 for a comprehensive overview] Distinctive features ....

Narayanan, N.H., & Hegarty, M. (1997). On designing comprehensible interactive hypermedia manuals. International Journal of Human-Computer Studies, in press.

.... Abstract: If a picture is worth a thousand words, then why have attempts over the past decade to use pictures and animations to replace or supplement traditional instructional methods for teaching algorithms produced such disappointing results In an earlier publication [Hansen Schrimpsher Narayanan 1998] we described a research program based on the premise that a novel approach to algorithm animation design is needed in order to effectively harness the power of animations to enhance learning. In this report, we discuss the architecture of the resulting hypermedia algorithm visualization ....

....al. 1993] Is it because animation is an ineffective teaching medium Intuition tells us this is not likely. Ongoing research in the areas of multimedia, usability and cognitive science sheds insight into factors that contribute to the design of effective visualization systems [Petre et al. 1998; Narayanan Hegarty 1998] and suggests that previous attempts at using animation to teach algorithm behavior were unsatisfactory not because of a flaw with animation as a technique, but perhaps because of the approach used to convey the animations. Our research is based on the hypothesis that animations are indeed ....

Narayanan, N. H., & Hegarty, M. (1998). On designing comprehensible interactive hypermedia manuals. International Journal of Human-Computer Studies, 48: 267-301.

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