The visualization of dynamic graphs is a challenging task owing to the various properties of the underlying relational data and the additional time-varying property.For sparse and small graphs,the most efficient appro...The visualization of dynamic graphs is a challenging task owing to the various properties of the underlying relational data and the additional time-varying property.For sparse and small graphs,the most efficient approach to such visualization is node-link diagrams,whereas for dense graphs with attached data,adjacency matrices might be the better choice.Because graphs can contain both properties,being globally sparse and locally dense,a combination of several visual metaphors as well as static and dynamic visualizations is beneficial.In this paper,a visually and algorithmically scalable approach that provides views and perspectives on graphs as interactively linked node-link and adjacency matrix visualizations is described.As the novelty of this technique,insights such as clusters or anomalies from one or several combined views can be used to influence the layout or reordering of the other views.Moreover,the importance of nodes and node groups can be detected,computed,and visualized by considering several layout and reordering properties in combination as well as different edge properties for the same set of nodes.As an additional feature set,an automatic identification of groups,clusters,and outliers is provided over time,and based on the visual outcome of the node-link and matrix visualizations,the repertoire of the supported layout and matrix reordering techniques is extended,and more interaction techniques are provided when considering the dynamics of the graph data.Finally,a small user experiment was conducted to investigate the usability of the proposed approach.The usefulness of the proposed tool is illustrated by applying it to a graph dataset,such as e co-authorships,co-citations,and a Comprehensible Perl Archive Network distribution.展开更多
While it is very reasonable to use a multigraph consisting of multiple edges between vertices to represent various relationships, the multigraph has not drawn much attention in research. To visualize such a multigraph...While it is very reasonable to use a multigraph consisting of multiple edges between vertices to represent various relationships, the multigraph has not drawn much attention in research. To visualize such a multigraph, a clear layout representing a global structure is of great importance, and interactive visual analysis which allows the multiple edges to be adjusted in appropriate ways for detailed presentation is also essential. A novel interactive two-phase approach to visualizing and exploring multigraph is proposed. The approach consists of two phases： the first phase improves the previous popular works on force-directed methods to produce a brief drawing for the aggregation graph of the input multigraph, while the second phase proposes two interactive strategies, the magnifier model and the thematic-oriented subgraph model. The former highlights the internal details of an aggregation edge which is selected interactively by user, and draws the details in a magnifying view by cubic Bezier curves; the latter highlights only the thematic subgraph consisting of the selected multiple edges that the user concerns. The efficiency of the proposed approach is demonstrated with a real-world multigraph dataset and how it is used effectively is discussed for various potential applications.展开更多
Visualization methods for single documents are either too simple, considering word frequency only, or depend on syntactic and semantic information bases to be more useful. This paper presents an intermediary approach,...Visualization methods for single documents are either too simple, considering word frequency only, or depend on syntactic and semantic information bases to be more useful. This paper presents an intermediary approach, based on H. P. Luhn’s automatic abstract creation algorithm, and intends to aggregate more information to document visualization than word counting methods do without the need of external sources. The method takes pairs of relevant words and computes the linkage force between them. Relevant words become vertices and links become edges in the resulting graph.展开更多
The identity system depends on tangible architecture, landscape roads and so on, but it doesn＇ t equal to the supplement of its subject but an indispensable constituent part. As the finishing touch of the whole urban...The identity system depends on tangible architecture, landscape roads and so on, but it doesn＇ t equal to the supplement of its subject but an indispensable constituent part. As the finishing touch of the whole urban space, by means of design of elements such as symbols, graphs, characters and colors as well as integration of various factors, the identity system reflects the urban specialty, conveys urban features related to history, geography, culture and emotion. The identity system provides suitable space environment to people through application of concrete symbols, graphs, characters and colors, in addition, it also mirrors that the designing culture of a city equals to its design concept with the combination of the historical culture of this city. A modem city shall be provided with such function, that is, it shall possess a whole set of well-designed and scientific-planned indication mechanism to help those wandering pedestrians to indicate direction and find their way successfully. It shall not only serve the mass, realize inter-coordination among people, identity facility and space environment to make people＇ s living environment more comfortable and convenient, but also it constitutes the vital cartier to spread local culture and model urban brand.展开更多
The advent of the time of big data along with social networks makes the visualization and analysis of networks information become increasingly important in many fields. Based on the information from social networks, t...The advent of the time of big data along with social networks makes the visualization and analysis of networks information become increasingly important in many fields. Based on the information from social networks, the idea of information visualization and development of tools are presented. Popular social network micro-blog （＇Weibo＇） is chosen to realize the process of users＇ interest and communications data analysis. User interest visualization methods are discussed and chosen and programs are developed to collect users＇ interest and describe it by graph. The visualization results may be used to provide the commercial recommendation or social investigation application for decision makers.展开更多
In this paper, a method to initiate, develop and visualize an abstract syntax tree (AST) in C++ source code is presented. The approach is in chronological order starting with collection of program codes as a string an...In this paper, a method to initiate, develop and visualize an abstract syntax tree (AST) in C++ source code is presented. The approach is in chronological order starting with collection of program codes as a string and split into individual characters using regular expression. This will be followed by separating the token grammar using best first search (BFS) algorithm to determine node having lowest value, lastly followed by graph presentation of intermediate representation achieved with the help of graph visualization software (GraphViz) while former is implemented using python programming language version 3. The efficacy of our approach is used in analyzing C++ code and yielded a satisfactory result.展开更多
背景:脊柱侧弯主要指脊柱冠状位、矢状位和轴位上的序列异常,且Cobb角≥10°。脊柱侧弯患者会出现双肩不等高、背部不对称等症状,严重者可能会影响患者心肺功能,从而影响患者的日常生活。保守治疗可以控制其侧凸进展,避免后期手术...背景:脊柱侧弯主要指脊柱冠状位、矢状位和轴位上的序列异常,且Cobb角≥10°。脊柱侧弯患者会出现双肩不等高、背部不对称等症状,严重者可能会影响患者心肺功能,从而影响患者的日常生活。保守治疗可以控制其侧凸进展,避免后期手术。脊柱侧弯矫形器是目前保守治疗中较为有效的治疗措施。目的:对脊柱侧弯矫形器的国内外研究现状、热点及趋势进行总结分析,为相关研究提供参考。方法:以文献计量学与可视化分析为手段,用中外文献对比的方法,对近10年脊柱侧弯矫形器期刊文献进行分析。通过文献计量学得出脊柱侧弯矫形器研究的现状,使用Citespace软件对关键词进行重点分析,得出目前脊柱侧弯矫形器研究的热点及未来趋势。结果与结论:①目前脊柱侧弯矫形器文献数量仍处于波动上升趋势。中国和美国是主要研究国家,两者文献占比超过40%,但中国学者的外文文献平均引用率较低。②国内研究的基础领域主要为外科学与儿科学,而在国外主要研究领域是矫形学与临床神经学。国内中医学也有一定数量的文献,说明国内也从事中西医结合的方法治疗脊柱侧弯。国家自然科学基金在中外文献中的占比都是最高的,体现出该基金对脊柱侧弯矫形器研究的重视。③中外文献发文量最高的作者为邱勇和Negrini Stefano,发文最多的机构是南京大学医学院附属鼓楼医院脊柱外科和UDICE-French Research University。国内外作者及机构有一定交流,但不密切,需要相关机构和学者进行进一步探讨研究。④从研究热点及未来趋势来看,主要治疗类型为青少年特发性脊柱侧弯,脊柱侧弯矫形器制作方式为3D打印,主要治疗指标为侧凸进展,治疗最终目的为提升患者的生活质量。展开更多
目的分析近10年痛风疾病管理的相关研究热点。方法检索并筛选2014年1月1日至2023年12月31日期间Web of Science^(TM)数据库中关于痛风的文献,通过Cite Space软件对文献的作者、国家、机构合作网络、文献引用和关键词进行分析及聚类分析...目的分析近10年痛风疾病管理的相关研究热点。方法检索并筛选2014年1月1日至2023年12月31日期间Web of Science^(TM)数据库中关于痛风的文献,通过Cite Space软件对文献的作者、国家、机构合作网络、文献引用和关键词进行分析及聚类分析等,并绘制可视化图谱。结果检索文献共2250篇,发文量基本呈上升趋势,发文量最多的教授是Nicola Da,最多的国家是美国,最多的机构是University of Auckland。关键词热度最高的为管理、高尿酸血症。结论痛风患者的疾病管理仍较热门,研究热点集中在痛风性关节炎的规范化诊疗。展开更多
文摘The visualization of dynamic graphs is a challenging task owing to the various properties of the underlying relational data and the additional time-varying property.For sparse and small graphs,the most efficient approach to such visualization is node-link diagrams,whereas for dense graphs with attached data,adjacency matrices might be the better choice.Because graphs can contain both properties,being globally sparse and locally dense,a combination of several visual metaphors as well as static and dynamic visualizations is beneficial.In this paper,a visually and algorithmically scalable approach that provides views and perspectives on graphs as interactively linked node-link and adjacency matrix visualizations is described.As the novelty of this technique,insights such as clusters or anomalies from one or several combined views can be used to influence the layout or reordering of the other views.Moreover,the importance of nodes and node groups can be detected,computed,and visualized by considering several layout and reordering properties in combination as well as different edge properties for the same set of nodes.As an additional feature set,an automatic identification of groups,clusters,and outliers is provided over time,and based on the visual outcome of the node-link and matrix visualizations,the repertoire of the supported layout and matrix reordering techniques is extended,and more interaction techniques are provided when considering the dynamics of the graph data.Finally,a small user experiment was conducted to investigate the usability of the proposed approach.The usefulness of the proposed tool is illustrated by applying it to a graph dataset,such as e co-authorships,co-citations,and a Comprehensible Perl Archive Network distribution.
基金supported by the National Natural Science Fundation of China(61103081)
文摘While it is very reasonable to use a multigraph consisting of multiple edges between vertices to represent various relationships, the multigraph has not drawn much attention in research. To visualize such a multigraph, a clear layout representing a global structure is of great importance, and interactive visual analysis which allows the multiple edges to be adjusted in appropriate ways for detailed presentation is also essential. A novel interactive two-phase approach to visualizing and exploring multigraph is proposed. The approach consists of two phases： the first phase improves the previous popular works on force-directed methods to produce a brief drawing for the aggregation graph of the input multigraph, while the second phase proposes two interactive strategies, the magnifier model and the thematic-oriented subgraph model. The former highlights the internal details of an aggregation edge which is selected interactively by user, and draws the details in a magnifying view by cubic Bezier curves; the latter highlights only the thematic subgraph consisting of the selected multiple edges that the user concerns. The efficiency of the proposed approach is demonstrated with a real-world multigraph dataset and how it is used effectively is discussed for various potential applications.
文摘Visualization methods for single documents are either too simple, considering word frequency only, or depend on syntactic and semantic information bases to be more useful. This paper presents an intermediary approach, based on H. P. Luhn’s automatic abstract creation algorithm, and intends to aggregate more information to document visualization than word counting methods do without the need of external sources. The method takes pairs of relevant words and computes the linkage force between them. Relevant words become vertices and links become edges in the resulting graph.
文摘The identity system depends on tangible architecture, landscape roads and so on, but it doesn＇ t equal to the supplement of its subject but an indispensable constituent part. As the finishing touch of the whole urban space, by means of design of elements such as symbols, graphs, characters and colors as well as integration of various factors, the identity system reflects the urban specialty, conveys urban features related to history, geography, culture and emotion. The identity system provides suitable space environment to people through application of concrete symbols, graphs, characters and colors, in addition, it also mirrors that the designing culture of a city equals to its design concept with the combination of the historical culture of this city. A modem city shall be provided with such function, that is, it shall possess a whole set of well-designed and scientific-planned indication mechanism to help those wandering pedestrians to indicate direction and find their way successfully. It shall not only serve the mass, realize inter-coordination among people, identity facility and space environment to make people＇ s living environment more comfortable and convenient, but also it constitutes the vital cartier to spread local culture and model urban brand.
文摘The advent of the time of big data along with social networks makes the visualization and analysis of networks information become increasingly important in many fields. Based on the information from social networks, the idea of information visualization and development of tools are presented. Popular social network micro-blog （＇Weibo＇） is chosen to realize the process of users＇ interest and communications data analysis. User interest visualization methods are discussed and chosen and programs are developed to collect users＇ interest and describe it by graph. The visualization results may be used to provide the commercial recommendation or social investigation application for decision makers.
文摘In this paper, a method to initiate, develop and visualize an abstract syntax tree (AST) in C++ source code is presented. The approach is in chronological order starting with collection of program codes as a string and split into individual characters using regular expression. This will be followed by separating the token grammar using best first search (BFS) algorithm to determine node having lowest value, lastly followed by graph presentation of intermediate representation achieved with the help of graph visualization software (GraphViz) while former is implemented using python programming language version 3. The efficacy of our approach is used in analyzing C++ code and yielded a satisfactory result.
文摘背景:脊柱侧弯主要指脊柱冠状位、矢状位和轴位上的序列异常,且Cobb角≥10°。脊柱侧弯患者会出现双肩不等高、背部不对称等症状,严重者可能会影响患者心肺功能,从而影响患者的日常生活。保守治疗可以控制其侧凸进展,避免后期手术。脊柱侧弯矫形器是目前保守治疗中较为有效的治疗措施。目的:对脊柱侧弯矫形器的国内外研究现状、热点及趋势进行总结分析,为相关研究提供参考。方法:以文献计量学与可视化分析为手段,用中外文献对比的方法,对近10年脊柱侧弯矫形器期刊文献进行分析。通过文献计量学得出脊柱侧弯矫形器研究的现状,使用Citespace软件对关键词进行重点分析,得出目前脊柱侧弯矫形器研究的热点及未来趋势。结果与结论:①目前脊柱侧弯矫形器文献数量仍处于波动上升趋势。中国和美国是主要研究国家,两者文献占比超过40%,但中国学者的外文文献平均引用率较低。②国内研究的基础领域主要为外科学与儿科学,而在国外主要研究领域是矫形学与临床神经学。国内中医学也有一定数量的文献,说明国内也从事中西医结合的方法治疗脊柱侧弯。国家自然科学基金在中外文献中的占比都是最高的,体现出该基金对脊柱侧弯矫形器研究的重视。③中外文献发文量最高的作者为邱勇和Negrini Stefano,发文最多的机构是南京大学医学院附属鼓楼医院脊柱外科和UDICE-French Research University。国内外作者及机构有一定交流,但不密切,需要相关机构和学者进行进一步探讨研究。④从研究热点及未来趋势来看,主要治疗类型为青少年特发性脊柱侧弯,脊柱侧弯矫形器制作方式为3D打印,主要治疗指标为侧凸进展,治疗最终目的为提升患者的生活质量。
文摘目的分析近10年痛风疾病管理的相关研究热点。方法检索并筛选2014年1月1日至2023年12月31日期间Web of Science^(TM)数据库中关于痛风的文献,通过Cite Space软件对文献的作者、国家、机构合作网络、文献引用和关键词进行分析及聚类分析等,并绘制可视化图谱。结果检索文献共2250篇,发文量基本呈上升趋势,发文量最多的教授是Nicola Da,最多的国家是美国,最多的机构是University of Auckland。关键词热度最高的为管理、高尿酸血症。结论痛风患者的疾病管理仍较热门,研究热点集中在痛风性关节炎的规范化诊疗。
