NDLI: Algorithm animation using shape analysis: visualising abstract executions

Content Provider	ACM Digital Library
Author	Johannes, Dierk Wilhelm, Reinhard Seidel, Raimund
Abstract	This paper describes progress in a non-traditional approach to algorithm animation. We visualise the abstract execution of an algorithm instead of animating the algorithm for executions on concrete input data. Algorithms under consideration are imperative pointer-based algorithms. For our purpose, we need to compute invariants which describe the state of the heap. The most powerful method to accomplish this task automatically is shape analysis. However, the output of a shape analysis can get confusingly large and complex, and it may contain redundancy as well. We need to identify those configurations which are important according to our visualisation aim, such as teaching the algorithm. We present suitable methods for structuring the shape analysis output and for finding expressive configurations. Our approach is exemplified for binary tree algorithms.
Starting Page	17
Ending Page	26
Page Count	10
File Format	PDF
ISBN	1595930736
DOI	10.1145/1056018.1056021
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2005-05-14
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Invariant Abstract execution Shape analysis Algorithm animation Visualisation Tree
Content Type	Text
Resource Type	Article

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Algorithm animation using shape analysis: visualising abstract executions