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Edge-stacked Timelines for Visualizing Dynamic Weighted Digraphs 用于可视化动态加权有向图的边缘堆叠时间轴
Pub Date : 1900-01-01 DOI: 10.5220/0005259200930100
Michael Burch, T. Munz, D. Weiskopf
We investigate the problem of visually encoding time-varying weighted digraphs to provide an overview about dynamic graphs. Starting from a rough overview of dynamic relational data an analyst can subsequently explore the data in more detail to gain further insights. To reach this goal we first map the graph vertices in the graph sequence to a common horizontal axis. Edges between vertices are represented as stacked horizontal and color-coded links starting and ending at their corresponding start and end vertex positions. The direction of each edge is indicated by placing it either above or below the horizontal vertex line. We attach a vertically aligned timeline to each link to show the weight evolution for those links. The order of the vertices and stacked edges is important for the readability of the visualization. We support interactive reordering and sorting in the vertex, edge, and timeline representations. The usefulness of our edge-stacked timelines is illustrated in a case study showing dynamic call graph data from software development.
我们研究了时变加权有向图的视觉编码问题,以提供动态图的概述。从动态关系数据的粗略概述开始,分析人员随后可以更详细地探索数据,以获得进一步的见解。为了达到这个目标,我们首先将图序列中的图顶点映射到一个公共的水平轴。顶点之间的边表示为堆叠的水平和颜色编码链接,开始和结束于相应的起始和结束顶点位置。每条边的方向通过将其置于水平顶点线的上方或下方来表示。我们为每个链接附加一个垂直对齐的时间轴,以显示这些链接的权重演变。顶点和堆叠边的顺序对于可视化的可读性很重要。我们支持顶点、边和时间轴表示的交互式重新排序和排序。我们的边缘堆叠时间线的有用性在一个案例研究中得到说明,该案例研究显示了来自软件开发的动态调用图数据。
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引用次数: 9
Visual Recommendations for Scientific and Cultural Content 科学和文化内容的视觉建议
Pub Date : 1900-01-01 DOI: 10.5220/0005352802560261
Eduardo Veas, Belgin Mutlu, Cecilia di Sciascio, Gerwald Tschinkel, V. Sabol
Supporting individuals who lack experience or competence to evaluate an overwhelming amout of information such as from cultural, scientific and educational content makes recommender system invaluable to cope with the information overload problem. However, even recommended information scales up and users still need to consider large number of items. Visualization takes a foreground role, letting the user explore possibly interesting results. It leverages the high bandwidth of the human visual system to convey massive amounts of information. This paper argues the need to automate the creation of visualizations for unstructured data adapting it to the user’s preferences. We describe a prototype solution, taking a radical approach considering both grounded visual perception guidelines and personalized recommendations to suggest the proper visualization.
支持缺乏经验或能力的个人评估大量信息,如文化、科学和教育内容,使推荐系统在处理信息过载问题方面具有不可估量的价值。然而,即使推荐的信息规模扩大,用户仍然需要考虑大量的项目。可视化占据了前景角色,让用户探索可能有趣的结果。它利用人类视觉系统的高带宽来传递大量的信息。本文论证了自动化非结构化数据可视化创建的必要性,使其适应用户的偏好。我们描述了一个原型解决方案,采用了一种激进的方法,考虑了基础视觉感知指南和个性化建议,以建议适当的可视化。
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引用次数: 2
Arc and Swarm-based Representations of Customer's Flows among Supermarkets 基于Arc和swarm的超市顾客流动表征
Pub Date : 1900-01-01 DOI: 10.5220/0005316503000306
Evgheni Polisciuc, P. Cruz, Hugo Amaro, Catarina Maçãs, Tiago Carvalho, Frederico Santos, P. Machado
Representing large amounts of flows involves dealing with the representation of directionality and the reduction of visual cluttering. This article describes the application of two flow representation techniques to the visualization of transitions of customers among supermarkets over time. The first approach relies in arc representations together with a combination of methods to represent directionality of transitions. The other approach uses a swarm-based system in order to reduce visual clutter, bundling edges in an organic fashion and improving clarity.
表示大量的流涉及到处理方向性的表示和减少视觉混乱。本文描述了两种流表示技术在超市顾客随时间变化的可视化中的应用。第一种方法依赖于弧表示和组合方法来表示过渡的方向性。另一种方法使用基于群体的系统来减少视觉混乱,以有机的方式捆绑边缘并提高清晰度。
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引用次数: 6
A Visual Analytics based Investigation on the Authorship of the Holy Quran 基于视觉分析的《古兰经》作者身份调查
Pub Date : 1900-01-01 DOI: 10.5220/0005355601770181
H. Sayoud
In this paper, we present a visual analytics based investigation for the task of authorship attribution of the holy Quran with regards to the Hadith Author (the Prophet). This can be seen as an authorship discrimination task between the two religious books: Quran vs Hadith. The first book represents the Divine book written by Allah (God) as claimed by the Prophet Muhammad, whereas the second one represents a collection of certified Prophet’s statements. Two visual analytics clustering methods are employed, namely: a Hierarchical Clustering and Fuzzy Cmean Clustering. On the other hand, seven types of NLP features are combined and normalized by PCA reduction before the classification process. The visual analytics results have revealed interesting results in 2D and 3D disposition. In summary, they show two main clusters in both experiments: Quran cluster and Hadith cluster; and the disposition of the resulting clusters corresponds to a clear authorship distinction between the two religious books.
在本文中,我们提出了一种基于视觉分析的调查,以确定神圣古兰经的作者身份,并将其与圣训作者(先知)联系起来。这可以被看作是古兰经和圣训这两本宗教书籍的作者区分任务。第一本书代表了先知穆罕默德所声称的由安拉(上帝)写的神圣的书,而第二本书代表了经认证的先知陈述的集合。采用了两种可视化分析聚类方法,即层次聚类和模糊均值聚类。另一方面,在分类过程之前,将七种类型的NLP特征进行组合和归一化PCA约简。可视化分析结果揭示了2D和3D配置的有趣结果。总之,他们在两个实验中都显示了两个主要集群:《古兰经》集群和《圣训》集群;和处置由此产生的集群对应于一个明确的作者区分之间的两个宗教书籍。
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引用次数: 9
Report Optimization using Visual Search Strategies - An Experimental Study with Eye Tracking Technology 使用视觉搜索策略优化报告-眼动追踪技术的实验研究
Pub Date : 1900-01-01 DOI: 10.5220/0005251702090218
Lisa Falschlunger, Christoph Eisl, Heimo Losbichler, Elisabeth Grabmann
The success of visualisations is determined by the ability of users to retrieve relevant information in an effective and efficient way. The way in which information is perceived can be analysed by examining visual search strategies of users. Visual search strategies in graphical representations however, are individual and have not been well explored up to now. Recent studies show that eye tracking experiments help in gaining new insights into these strategies. Apart from error rates and task completion times, eye tracking focuses on the way observers of visualisations read and make sense of the presented stimulus. In this way sequential strategies can be analysed, compared and used in order to optimize graphical layouts. In this study we use the approach of Parallel Scan Path visualisation in combination with Levenshtein Distance to determine similarities between search strings when viewing graphical representations in standardized business communication. This study shows a positive correlation between search strategies and task completion time and allows the evaluation of different design layouts. Positive significant effects can be detected when examining experience (with respect to standardized and repetitive reporting) and layout optimization (with respect to graphical representations and page layout). Optimal search strategies can be identified when users are experienced and using an optimized layout.
可视化的成功取决于用户以有效和高效的方式检索相关信息的能力。信息被感知的方式可以通过检查用户的视觉搜索策略来分析。然而,图形表示中的视觉搜索策略是个性化的,目前还没有得到很好的探索。最近的研究表明,眼动追踪实验有助于获得对这些策略的新见解。除了错误率和任务完成时间外,眼动追踪还关注视觉化观察者阅读和理解呈现刺激的方式。通过这种方式,可以分析、比较和使用顺序策略,以优化图形布局。在本研究中,我们将并行扫描路径可视化方法与Levenshtein距离相结合,以确定在标准化业务通信中查看图形表示时搜索字符串之间的相似性。本研究显示搜索策略与任务完成时间呈正相关,并允许对不同的设计布局进行评估。当检查体验(关于标准化和重复的报告)和布局优化(关于图形表示和页面布局)时,可以检测到积极的显著影响。当用户有经验并使用优化的布局时,可以确定最佳搜索策略。
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引用次数: 2
Time-series Application on Big Data - Visualization of Consumption in Supermarkets 时间序列在大数据中的应用——超市消费可视化
Pub Date : 1900-01-01 DOI: 10.5220/0005307702390246
Catarina Maçãs, P. Cruz, Hugo Amaro, Evgheni Polisciuc, Tiago Carvalho, Frederico Santos, P. Machado
The evolution of technology is changing how people work within organizations. Information about customer consumption leads to a new era of business intelligence, wherein Big Data is analyzed to improve business. In this project we apply information visualization in the context of Big Data for product’s consumption. The aim of this project is to visualize the evolution of consumption, to detect typical and periodic behaviors and emphasize the atypical ones. In this article we present our workflow—from finding periodic behaviors to create a final visualization using time-series and small-multiples techniques. With the final visualization we are able to show consumption behaviors and highlight the deviations from typical consumption days.
技术的发展正在改变人们在组织内的工作方式。客户消费信息带来了商业智能的新时代,通过分析大数据来改善业务。在这个项目中,我们将大数据背景下的信息可视化应用于产品消费。这个项目的目的是可视化消费的演变,检测典型和周期性的行为,并强调非典型的行为。在本文中,我们将介绍我们的工作流程——从发现周期性行为到使用时间序列和小倍数技术创建最终的可视化。通过最终的可视化,我们能够显示消费行为,并突出显示与典型消费日的偏差。
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引用次数: 8
Visualizing Dynamic Weighted Digraphs with Partial Links 带有部分链接的动态加权有向图的可视化
Pub Date : 1900-01-01 DOI: 10.5220/0005303801230130
H. Schmauder, Michael Burch, D. Weiskopf
Graphs are traditionally represented as node-link diagrams, but these typically suffer from visual clutter when they become denser, i.e. more vertices and edges are present in the data set. Partial link drawings have been introduced for node-link diagrams aiming at reducing visual clutter caused by link crossings. Although this concept was shown to perform well for some parameter settings, it has not been used for visually encoding dynamic weighted digraphs. In this paper we investigate the problem of visualizing time-varying graphs as one node-link diagram in a specific layout by exploiting the links as timelines. Partially drawn links are used to show the graph dynamics by splitting each link into as many segments as time steps have to be represented. Conventional 2D layout algorithms can be applied while simultaneously showing the evolution over time. Color-coded links represent the changing weights. We use tapered links to reduce possible overlaps at the link target nodes that would occur when using traditional arrow-based directed links. We experiment with different graph layouts and different numbers of data dimensions, i.e. number of vertices, edges, and time steps. We illustrate the usefulness of the technique in a case study investigating dynamic migration data.
传统上,图形被表示为节点链接图,但当它们变得更密集时,通常会出现视觉混乱,即数据集中出现更多的顶点和边。部分链接图被引入到节点链接图中,目的是减少链接交叉造成的视觉混乱。尽管这个概念在某些参数设置上表现良好,但它还没有被用于动态加权有向图的视觉编码。在本文中,我们研究了将时变图可视化为特定布局中的一个节点-链接图的问题,利用链接作为时间线。部分绘制的链接用于通过将每个链接划分为必须表示的时间步长的尽可能多的片段来显示图形动态。传统的二维布局算法可以应用,同时显示随时间的演变。用颜色编码的链接表示权重的变化。我们使用锥形链接来减少在使用传统的基于箭头的定向链接时可能发生的链接目标节点上的重叠。我们尝试了不同的图布局和不同的数据维数,即顶点数、边数和时间步长。我们在调查动态迁移数据的案例研究中说明了该技术的有用性。
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引用次数: 10
Towards Highly Affine Visualizations of Consumption Data from Buildings 面向建筑消费数据的高度仿射可视化
Pub Date : 1900-01-01 DOI: 10.5220/0005315102470255
M. Nielsen, Kaj Grønbæk
This paper presents a novel approach AffinityViz to visualize live and aggregated consumption data from multistory buildings. The objective of the approach is to provide a generic but high affinity relation between real buildings’ spatial layouts and the consumption data visualizations. Current approaches come short on maintaining such affinity. This implies an avoidable cognitive load on users such as energy managers and facility managers who need to monitor consumption and make decisions from consumption data. To alleviate this we have transformed three conventional types of visualizations into highly affine visualizations lowering the cognitive load for users. The contributions are: 1) Development of the AffinityViz techniques featuring three generic designs of highly affine visualizations of consumption data. 2) Comparison of the affine visualizations with the conventional visualizations. 3) Initial evaluation of the AffinityViz designs by expert users on real world data. Finally, the design challenges of AffinityViz are discussed, including prospects for AffinityViz as a future tool for visual analysis of data from buildings.
本文提出了一种新颖的方法AffinityViz,将多层建筑的实时汇总消费数据可视化。该方法的目的是在真实建筑的空间布局和消费数据可视化之间提供一种通用但高度亲和的关系。目前的方法无法保持这种亲和力。这意味着用户(如需要监控消耗并根据消耗数据做出决策的能源经理和设施经理)的认知负担是可以避免的。为了缓解这种情况,我们将三种传统的可视化转换为高度仿射的可视化,以降低用户的认知负荷。贡献包括:1)AffinityViz技术的发展,该技术具有三种高仿射消费数据可视化的通用设计。2)仿射可视化与常规可视化的比较。3)由专家用户根据真实世界数据对AffinityViz设计进行初步评估。最后,讨论了AffinityViz的设计挑战,包括AffinityViz作为未来建筑数据可视化分析工具的前景。
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引用次数: 2
OpenGLSL-based Raycasting - Comparison of Execution Durations of Multi-pass vs. Single-pass Technique 基于openglsl的光线投射-多通道与单通道技术的执行时间比较
Pub Date : 1900-01-01 DOI: 10.5220/0005344703070310
S. Maas, H. M. Overhoff
Real time volume rendering of medical datasets using raycasting on graphics processing units (GPUs) is a common technique. Since more than 10 years there are two established approaches for realizing GPU ray casting: multi-pass (Kruger and Westermann, 2003) and single-pass (Röttger, et al., 2003). But the required parameters to choose the optimal raycasting technique for a given application are still unknown. To solve this issue both raycasting techniques were implemented for different raycasting types using OpenGLSL vertex and fragment shaders. The different techniques and types were compared regarding execution times. The results of this comparison show that there is no technique faster in general. The higher the computational load the more indicates the use of the multi-pass technique.
在图形处理单元(gpu)上使用光线投射对医疗数据集进行实时体绘制是一种常用技术。10多年来,有两种成熟的方法来实现GPU光线投射:多通道(Kruger和Westermann, 2003)和单通道(Röttger等,2003)。但是,为给定应用选择最佳光线投射技术所需的参数仍然未知。为了解决这个问题,我们使用OpenGLSL顶点和片段着色器实现了不同类型的光线投射技术。在执行时间方面比较了不同的技术和类型。这种比较的结果表明,没有任何一种技术在一般情况下更快。计算负载越高,越表明使用多通道技术。
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引用次数: 0
A Time-location-Based Itinerary Visualization 基于时间位置的行程可视化
Pub Date : 1900-01-01 DOI: 10.5220/0005199600770084
F. Haag, T. Schlegel, T. Ertl
With the advent of linked data sources, transportation information systems are no longer limited to indicating how to get from one location to another. They can suggest where to go shopping on the way or plan several synchronized itineraries for groups of travelers. Along with these developments, information about stopovers evolves from mere additional data to a crucial part of the itinerary. However, current time-based visualizations of itineraries cannot adequately convey the stopovers contained in an itinerary. We propose a time-locationbased itinerary visualization that can be used when planning trips, which allows for the easy comparison of itineraries with different routes, and for aligning itineraries of several travelers in collaborative scenarios. We describe the visualization concept and report on a user study that confirms the basic ideas and provides a number of insights on how the visualization can be developed further.
随着关联数据源的出现,交通信息系统不再局限于指示如何从一个位置到达另一个位置。他们可以建议在路上去哪里购物,或者为旅行团计划几个同步的行程。随着这些发展,关于中途停留的信息从单纯的附加数据演变为行程的重要组成部分。然而,目前基于时间的行程可视化不能充分传达行程中包含的中途停留。我们提出了一种基于时间位置的行程可视化,可以在规划旅行时使用,它允许轻松比较不同路线的行程,并在协作场景中对齐几个旅行者的行程。我们描述了可视化概念,并报告了一项用户研究,该研究证实了基本思想,并就如何进一步开发可视化提供了一些见解。
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引用次数: 0
期刊
International Conference on Information Visualization Theory and Applications
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