检索结果-内蒙古大学图书馆

algorithm visualization for distributed environments

JOURNAL OF VISUAL LANGUAGES AND COMPUTING 2004年第1期15卷 97-123页

作者： Moses, Y Polunsky, Z Tal, A Ulitsky, L Technion Israel Inst Technol Dept Elect Engn IL-32000 Haifa Israel Weizmann Inst Sci Dept Appl Math IL-76100 Rehovot Israel

This paper investigates the visualization of distributed algorithms. We present a conceptual model and a system, VADE, that realizes this model. Since in asynchronous distributed systems there is no way of knowing (let alone, visualizing) the "real" execution, we show how to generate a visualization which is consistent with the execution of the distributed algorithm. We also present the design and implementation of our system. VADE is designed so that the algorithm runs on the server's machines while the visualization is executed on a web page on the client's machine. Programmers can write animations quickly and easily with the assistance of VADE's libraries. End-users can experiment with the animation and change its visual properties. (C) 2003 Elsevier Ltd. All rights reserved.

关键词： algorithm visualization algorithm animation distributed algorithms

来源：评论

学校读者我要写书评

暂无评论

algorithm visualization and the Elusive Modality Effect 2021

Algorithm Visualization and the Elusive Modality Effect

引用

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

来源：评论

学校读者我要写书评

暂无评论

An algorithm visualization tool on the reconfigurable mesh

引用

VLSI DESIGN 2002年第3期14卷 239-248页

作者： Bordim, JL Hayashi, T Nakano, K Nagoya Inst Technol Dept Elect & Comp Engn Showa Ku Nagoya Aichi 4668555 Japan

Many parallel algorithms on the reconfigurable mesh have been developed so far. However, it is hard to understand the behavior of these parallel algorithms, mainly because the bus topology dynamically changes during the execution of an algorithm. In this work, we present the visual mesh system (VMesh), a tool for visualizing algorithms on the reconfigurable mesh. The main objective of the VMesh is to provide a comprehensive environment for algorithm visualization and development. The VMesh has shown to be a valuable tool for studying and understanding the behavior of parallel algorithms on the reconfigurable mesh.

关键词： algorithm visualization reconfigurable mesh parallel algorithms field programmable gate arrays

来源：评论

学校读者我要写书评

暂无评论

A meta-study of algorithm visualization effectiveness

引用

JOURNAL OF VISUAL LANGUAGES AND COMPUTING 2002年第3期13卷 259-290页

作者： Hundhausen, CD Douglas, SA Stasko, JT Univ Hawaii Dept Informat & Comp Sci Lab Interact Learning Technol Honolulu HI 96822 USA Univ Oregon Dept Comp & Informat Sci Human Comp Interact Lab Eugene OR 97403 USA Georgia Inst Technol Coll Comp GVU Ctr Atlanta GA 30332 USA

algorithm visualization (AV) technology graphically illustrates how algorithms work. Despite the intuitive appeal of the technology, it has failed to catch on in mainstream computer science education. Some have attributed this failure to the mixed results of experimental studies designed to substantiate AV technology's educational effectiveness. However, while several integrative reviews of AV technology have appeared, none has focused specifically on the software's effectiveness by analyzing this body of experimental studies as a whole. In order to better understand the effectiveness of AV technology, we present a systematic meta-study of 24 experimental studies. We pursue two separate analyses: an analysis of independent variables, in which we tie each study to a particular guiding learning theory in an attempt to determine which guiding theory has had the most predictive success;and an analysis of dependent variables, which enables us to determine which measurement techniques have been most sensitive to the learning benefits of AV technology. Our most significant finding is that how students use AV technology has a greater impact on effectiveness than what AV technology shows them. Based on our findings, we formulate an agenda for future research into AV effectiveness. (C) 2002 Elsevier Science Ltd. All rights reserved.

关键词： algorithm visualization software visualization empirical studies of effectiveness literature reviews meta-analysis

来源：评论

学校读者我要写书评

暂无评论

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

An empirical study on factors influencing the effectiveness of algorithm visualization

引用

COMPUTER APPLICATIONS IN ENGINEERING EDUCATION 2013年第3期21卷 410-420页

作者： Lazaridis, Vassilios Samaras, Nikolaos Sifaleras, Angelo Univ Macedonia Dept Appl Informat Thessaloniki 54006 Greece Univ Macedonia Dept Technol Management Loggou Tourpali 59200 Naousa Greece

The determination of the factors influencing the effectiveness of algorithm visualization poses an interesting research question. In this paper, we present the results of a longitude empirical study regarding this question. The study was based on an evaluation of the Visual LinProg educational tool inside classrooms. Visual LinProg is a web-based educational tool, which solves linear programming problems using animation and visualization techniques. Visual LinProg was developed to be used in linear programming courses to supplement the teaching. Our empirical study is based on questionnaires that include quantitative and qualitative topics. This evaluation first indicates that Visual LinProg facilitates the learning of the revised simplex algorithm and second presents more results on factors influencing the understanding of this algorithm by the students/users of the Visual LinProg. (c) 2010 Wiley Periodicals, Inc. Comput Appl Eng Educ 21: 410-420, 2013

关键词： educational software algorithm visualization linear optimization empirical studies

来源：评论

学校读者我要写书评

暂无评论

algorithm visualization: The State of the Field

Algorithm Visualization: The State of the Field

引用

作者： Cooper, Matthew Lenell Virginia Tech | University

We report on the state of the field of algorithm visualization, both quantitatively and qualitatively. Computer science educators seem to find algorithm and data structure visualizations attractive for their classrooms. Educational research shows that some are effective while many are not. Clearly, then, visualizations are difficult to create and use right. There is little in the way of a supporting community, and many visualizations are downright poor. Topic distribution is heavily skewed towards simple concepts with advanced topics receiving little to no attention. We have cataloged nearly 400 visualizations available on the Internet. We have a wiki-based catalog which includes availability, platform, strengths and weaknesses, responsible personnel and institutions, and other data about each visualization. We have developed extraction and analysis tools to gather statistics about the corpus of visualizations. Based on analysis of this collection, we point out areas where improvements may be realized and suggest techniques for implementing such improvements. We pay particular attention to the free and open source software movement as a model which the visualization community may do well to emulate, from both a software engineering perspective and a community-building standpoint.

关键词： algorithm visualization algorithm animation algoviz algoviz wiki community open source data structure visualization Thesis

来源：评论

学校读者我要写书评

暂无评论

Building an Online Educational Community for algorithm visualization 10

Building an Online Educational Community for Algorithm Visua...

引用

41st ACM Technical Symposium on Computer Science Education

作者： Shaffer, Clifford A. Naps, Thomas L. Rodger, Susan H. Edwards, Stephen H. Virginia Tech Dept Comp Sci Blacksburg VA 24061 USA

No abstract available.

ISBN: (纸本)9781605588858

No abstract available.

关键词： algorithm visualization Online Educational Community

来源：评论

学校读者我要写书评

暂无评论

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

MAVIS: A multi-level algorithm visualization system within a...

引用

IEEE Symposia on Human Centric Computing Languages and Environments (HCC 02)

作者： Koifman, I Shimshoni, I Tal, A Technion Israel Inst Technol Dept Ind Engn & Management IL-32000 Haifa Israel

ISBN: (纸本)0769516440

We present in this paper a new model for an algorithm visualization system. Our model views the visualization system as air 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 a few 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, which is supported by our model, is to facilitate collaboration and data sharing between the students and the instructor and between the students themselves. This paper also presents a system, MAVIS, that realizes the model, and demonstrates its use on case studies.

关键词： algorithm visualization algorithm animation distance learning collaboration

来源：评论

学校读者我要写书评

暂无评论

Map-based algorithm visualization with METAL Highway Data 18

Map-based Algorithm Visualization with METAL Highway Data

引用

49th ACM SIGCSE Technical Symposium on Computer Science Education (SIGCSE)

作者： Teresco, James D. Fathi, Razieh Ziarek, Lukasz Bamundo, MariaRose Pengu, Arjol Tarbay, Clarice F. Siena Coll Loudonville NY 12211 USA Univ Buffalo Buffalo NY USA

ISBN: (纸本)9781450351034

We present the algorithm visualization capabilities of the METAL project. Using METAL's graph data which represents highway systems, a selection of interactive algorithm visualizations are performed. Progress of the algorithm is shown by changing the colors of the graph's vertices and/or edges overlaid on Google Maps and in color-coded tabular form, including contents of important data structures. Advantages include the real-world data set and the variety of data sizes available, enhancing student engagement. While many visualizations and visualization tools exist for graph and related algorithms, most focus on small, synthetic graphs. We describe our algorithm visualization capabilities, which include implementations of sequential search, graph traversals, Dijkstra's algorithm, and convex hulls. These can be executed on graphs ranging in size from a few vertices and edges to hundreds. We also present results of a survey of students who have used METAL's algorithm visualizations.

关键词： Pedagogical tools Graph algorithms algorithm visualization

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：