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MAVIS: A multi-level algorithm visualization system within a collaborative distance learning environment

JOURNAL OF VISUAL LANGUAGES AND COMPUTING 2008年第2期19卷 182-202页

作者： Koffman, Igal Shimshoni, Ilan Tal, Ayellet Technion Israel Inst Technol Dept Elect Engn IL-32000 Haifa Israel Univ Haifa Dept Management Informat Syst IL-31999 Haifa Israel Technion Israel Inst Technol Dept Ind Engn & Management IL-32000 Haifa Israel

This paper presents a new model for an algorithm visualization system. Our model views the visualization system as an integral part of a broader distance learning environment. As such, it supports the heterogeneity of the Internet the visualization is expected to run on and the diversity of the expected users. It does so by defining several ways for handling multi-level visualizations. First, a visualization can run in various abstraction levels of the algorithm, depending on the familiarity of the students with the studied materials. Second, a visualization can use various levels of graphics, depending on the capabilities of the client machines. Third, the messages sent between the machines can be of various levels, depending on the communication loads. Another important aspect of a distance learning environment is collaboration and data sharing. Our model facilitates the collaboration between the students and the instructor and between the students themselves. Finally, this paper presents a system, MAVIS, that realizes the model, and demonstrates its use on several algorithms. (c) 2006 Elsevier Ltd. All rights reserved.

关键词： algorithm visualization algorithm animation distance learning collaboration

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Real clock time animation support for developing software visualisations

AUSTRALIAN COMPUTER JOURNAL

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AUSTRALIAN COMPUTER JOURNAL 1995年第4期27卷 118-128页

作者： Stasko, JT McCrickard, DS GEORGIA INST TECHNOL COLL COMPCTR GRAPH VISUALIZAT & USABILATLANTAGA 30332

Developers building software visualisations must use a graphics library and user interface toolkit as an underlying support platform. Often, these support environments are large, difficult to learn, low-level, and lacking primitives for capabilities such as animation. We have developed a graphics support environment called Polka-RC for building software visualisations. Polka-RC is a second generation system that leverages the continuous animation primitives of the mature system Polka, and adds the capability of specifying real clock time-based animation activations and durations. The new Polka-RC animation model also provides a flexible multiprocess program-to-visualisation mapping, In this article we describe the Polka-RC methodology, list advantages of the approach, and describe how the methodology influences the design of software visualisations and algorithm animations.

关键词： software visualisation algorithm animation computer graphics graphics libraries and toolkits

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Visualisations of parallel algorithms for reconfigurable torus computers

Visualisations of parallel algorithms for reconfigurable tor...

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1998 Conference for Computer Human Interaction (OzCHI'98)

作者： Brown, J Martin, P Paku, N Turner, G Victoria Univ Wellington Sch Math & Comp Sci Wellington New Zealand

ISBN: (纸本)0818692065

Program visualisation can help make an algorithm understandable. Program visualisation is especially challenging in the area of parallel computations where many processors are executing simultaneously algorithms for parallel machines take advantage of the simultaneous activity of processors to perform operations very quickly?: As a result, these algorithms can be difficult to understand In this paper we describe a visualisation tool developed specifically for explaining algorithms written for single-instruction, multiple-data (SIMD) computers called torus computers. This tool helps its users to visualise the patterns of activities of the processors in the process of a computation.

关键词： algorithm animation program visualisation parallel algorithms SIMD architectures

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SICAS2: Interactive Tool to Support Programming Learning 24

SICAS2: Interactive Tool to Support Programming Learning

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International Symposium on Computers in Education (SIIE)

作者： Ferreira, Alexandre Gomes, Anabela Mendes, Antonio Jose Univ Coimbra Dept Informat Engn Coimbra Portugal Univ Coimbra Polytech Inst Coimbra ISEC Coimbra Portugal Univ Coimbra Ctr Informat & Syst CISUC Coimbra Portugal

ISBN: (数字)9781665474641

ISBN: (纸本)9781665474641

In the last decades the area of informatics had an exponential growth. This led to a high number of young students being attracted to higher education courses in the IT area. However, many students face difficulties when they have to learn programming. This often causes frustration and even dropout for many students. This paper presents a tool designed plugin that allows students to build programs using flowcharts and see the animation of the execution of those programs. The main objective is to facilitate the comprehension and application of basic programming concepts in programs that may solve common introductory problems.

关键词： algorithm animation Visualization Systems Programming Teaching and Learning Computer Science Education.

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A CPU scheduling algorithm simulator

A CPU scheduling algorithm simulator

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37th Annual Frontiers in EducationConference

作者： Suranauwarat, Sukanya Natl Inst Dev Adm Sch Appl Stat Bangkok 10240 Thailand

ISBN: (纸本)9781424410835

This paper presents a simulator that uses graphical animation to convey the concepts of various scheduling algorithms for a single CPU. The simulator is unique in a number of respects. First, it uses a more realistic process model that can be configured easily by the user. Second, it graphically depicts each process in terms of what the process is currently doing against time. Using this representation, it becomes much easier to understand what is going on inside the system and why a different set of processes is a candidate for the allocation of the CPU at different time. A third unique feature of the simulator is that it allows the user to test and increase his understanding of the concepts studied by making his own scheduling decisions, through the very easy-to-use graphical user interface of the simulator. The simulator can be used by students in operating system courses or by anyone interested in learning CPU scheduling algorithms in an easier and a more effective way.

关键词： algorithm animation computer science education CPU scheduling algorithms operating systems

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algorithm Visualization and the Elusive Modality Effect 2021

Algorithm Visualization and the Elusive Modality Effect

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17th Annual ACM Conference on International Computing Education Research (ICER)

作者： Zavgorodniaia, Albina Tilantera, Artturi Korhonen, Ari Seppala, Otto Hellas, Arto Sorva, Juha Aalto Univ Espoo Finland

ISBN: (纸本)9781450383264

The modality effect in multimedia learning suggests that pictures are best accompanied by audio explanations rather than text, but this finding has not been replicated in computing education. We investigate which instructional modality works best as an accompaniment for algorithm visualizations. In a randomized controlled trial, learners were split into three conditions who viewed an instructional video on Dijkstra's algorithm, with diagrams accompanied by audio, text, or both. We find neither a modality effect in favor of the audio condition nor a verbal redundancy effect in favor of using only a single modality rather than both. Taken together with earlier research, our findings suggest that the modality effect is difficult to apply reliably and computing educators should not rush to integrate audio into visualizations in expectation of the effect. We discuss theoretical viewpoints that future research should attend to;these include alternative part-explanations of the modality effect and attention-based models of working memory, among others.

关键词： modality effect verbal redundancy effect data structures and algorithms algorithm visualization algorithm animation Dijkstra's algorithm replication

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HOW TO VISUALISE ABSTRACT TOPICS IN COMPUTER AND COMMUNICATION SCIENCE

HOW TO VISUALISE ABSTRACT TOPICS IN COMPUTER AND COMMUNICATI...

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1st International Conference on Computer Supported Education

作者： Kucera, Ludek Charles Univ Prague Fac Math & Phys Dept Appl Math Prague Czech Republic

ISBN: (纸本)9789898111821

The paper deals with learning of algorithms and protocols using visual media and it presents experience obtained with a system Algovision developed at Charles University, Prague. The teaching of the paper is that learning objects and courses should attempt explaining why an algorithm or protocol achieves its goals rather than merely showing what is going on during the computation and/or communication and how the data change in time. This means visualising abstract topics like algorithm invariant, mathematical proof, researcher intuition, and a collection of paradigms used to achieve such task is presented, as it appeared during development of Algovision.

关键词： algorithm visualisation Protocol visualisation algorithm animation Program invariant Mathematical proof Intuition algorithmic idea

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Software visualization 05

Software visualization

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27th International Conference on Software Engineering (ICSE 2005)

作者： Diehl, S Catholic Univ Comp Sci Dept D-85072 Eichstatt Germany

ISBN: (纸本)9781581139631

This half-day tutorial gives an overview of the current state-of-the-art in software visualization. Software visualization encompasses the development and evaluation of methods for graphically representing different aspects of software, including its structure, its execution, and its evolution. In contrast to visual programming and diagramming for software design, software visualization is not so much concerned with the construction, but with the analysis of programs and their development process. Software visualization combines techniques from areas like software engineering, programming languages, data mining, computer graphics, information visualization and human-computer interaction. Topics covered in this tutorial include static program visualization, algorithm animation, visual debugging, as well as the visualization of the evolution of software. In particular we identify common principles illustrated by many examples and give pointers to tools available today.

关键词： program visualization algorithm animation visual debugging software architecture

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Teaching Data Structures to Students who are Blind

Teaching Data Structures to Students who are Blind

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12th Annual Conference on Innovation and Technology in Computer Science Education

作者： Calder, Matt Cohen, Robert F. Lanzoni, Jessica Landry, Neal Skaff, Joelle UMass Boston Dept Comp Sci Boston MA 02125 USA

ISBN: (纸本)9781595936103

We present our work in assisting students who are blind to understand fundamental data structures. We have developed a system called PLUMB EXTRA(3) (EXploring data sTRuctures using Audible algorithm animation) that conveys an algorithm animation using audio cues and synthesized speech. This extends Our earlier work on presenting graphs to users who are blind.

关键词： Accessibility algorithm animation Audio Display Data Structures

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Generation of interactive animations of computational models

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Informatik - Forschung und Entwicklung 2002年第1期17卷 12-20页

作者： Diehl, Stephan Kerren, Andreas Universität des Saarlandes FR 6.2 Informatik 66041 Saarbrücken Postfach 15 11 50 Germany

In this article we introduce two new generative approaches of animated computational models. These approaches are applied in context of educational software systems for compiler design. First we describe the implementation of the first approach. Based on the experiences with this prototype implementation we have developed the second approach and the GANIMAL framework was designed. This framework consists of a generic algorithm animation system, which offers a unique set of possibilities because of its graphical base package, its concurrent runtime system with graphical user interface and its programming and animation specification language GANILA. © Springer-Verlag 2002.

关键词： algorithm animation Compilers Educational software Software visualization

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