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Improved interactive color visualization approach for hyperspectral images 改进的高光谱图像交互式颜色可视化方法
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-09-24 DOI: 10.1177/14738716211048142
Haijun Yu, Shengyang Li
Hyperspectral images (HSIs) have become increasingly prominent as they can maintain the subtle spectral differences of the imaged objects. Designing approaches and tools for analyzing HSIs presents a unique set of challenges due to their high-dimensional characteristics. An improved color visualization approach is proposed in this article to achieve communication between users and HSIs in the field of remote sensing. Under the real-time interactive control and color visualization, this approach can help users intuitively obtain the rich information hidden in original HSIs. Using the dimensionality reduction (DR) method based on band selection, high-dimensional HSIs are reduced to low-dimensional images. Through drop-down boxes, users can freely specify images that participate in the combination of RGB channels of the output image. Users can then interactively and independently set the fusion coefficient of each image within an interface based on concentric circles. At the same time, the output image will be calculated and visualized in real time, and the information it reflects will also be different. In this approach, channel combination and fusion coefficient setting are two independent processes, which allows users to interact more flexibly according to their needs. Furthermore, this approach is also applicable for interactive visualization of other types of multi-layer data.
高光谱图像由于能够保持被成像物体的细微光谱差异而日益受到重视。由于hsi的高维特征,设计用于分析hsi的方法和工具带来了一系列独特的挑战。本文提出了一种改进的彩色可视化方法,以实现遥感领域用户与hsi之间的通信。该方法在实时交互控制和颜色可视化下,可以帮助用户直观地获取隐藏在原始hsi中的丰富信息。采用基于波段选择的降维方法,将高维hsi图像降维为低维图像。通过下拉框,用户可以自由指定参与输出图像RGB通道组合的图像。然后,用户可以基于同心圆交互式地独立设置界面内每个图像的融合系数。同时,输出的图像会被实时计算和可视化,它所反映的信息也会有所不同。在这种方法中,通道组合和融合系数设置是两个独立的过程,用户可以根据自己的需求更灵活地进行交互。此外,该方法也适用于其他类型的多层数据的交互式可视化。
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引用次数: 0
Exploring, browsing and interacting with multi-level and multi-scale dynamics of knowledge 探索、浏览和互动多层次、多尺度的动态知识
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-09-23 DOI: 10.1177/14738716211044829
Quentin Lobbé, Alexandre Delanoë, David Chavalarias
The ICT revolution has given birth to a world of digital traces. A wide number of knowledge-driven domains like science are daily fueled by unlimited flows of textual contents. In order to navigate across these growing constellations of words, interdisciplinary innovations are emerging at the crossroad between social and computational sciences. In particular, complex systems approaches make it now possible to reconstruct multi-level and multi-scale dynamics of knowledge by means of inheritance networks of elements of knowledge called phylomemies. In this article, we will introduce an endogenous way to visualize the multi-level and multi-scale properties of phylomemies. The resulting system will enrich a state-of-the-art tree like representation with the possibility to browse through the evolution of a corpus of documents at different level of observation, to interact with various scales of description, to reconstruct a hierarchical clustering of elements of knowledge and to navigate across complex semantic lineages. We will then formalize a generic macro-to-micro methodology of exploration and implement our system as a free software called the Memiescape. Our system will be illustrated by three use cases that will respectively reconstruct the scientific landscape of the top cited publications of the French CNRS, the evolution of the state of the art of knowledge dynamics visualization and the ongoing discovery process of Covid-19 vaccines.
信息和通信技术革命催生了一个数字痕迹的世界。大量知识驱动的领域,如科学,每天都受到文本内容无限流动的推动。为了在这些不断增长的单词群中导航,跨学科创新正在社会科学和计算科学之间的十字路口出现。特别是,复杂系统方法现在可以通过称为系统的知识元素的继承网络来重建知识的多层次和多尺度动态。在这篇文章中,我们将介绍一种内生的方法来可视化门的多层次和多尺度特性。由此产生的系统将丰富最先进的树状表示,有可能浏览不同观察级别的文档语料库的演变,与各种描述尺度交互,重建知识元素的层次聚类,并在复杂的语义谱系中导航。然后,我们将形式化一种通用的宏观到微观的探索方法,并将我们的系统作为一个名为Memiescape的自由软件来实现。我们的系统将通过三个用例进行说明,这些用例将分别重建法国国家科学院引用最多的出版物的科学景观、知识动态可视化技术的发展以及新冠肺炎疫苗的持续发现过程。
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引用次数: 6
HyperStorylines: Interactively untangling dynamic hypergraphs HyperStorylines:交互式地解开动态超图
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-09-18 DOI: 10.1177/14738716211045007
Vanessa Peña-Araya, Tong Xue, Emmanuel Pietriga, L. Amsaleg, A. Bezerianos
We present the design and evaluation of HyperStorylines, a technique that generalizes Storylines to visualize the evolution of relationships involving multiple types of entities such as, for example, people, locations, and companies. Datasets which describe such multi-entity relationships are often modeled as hypergraphs, that can be difficult to visualize, especially when these relationships evolve over time. HyperStorylines builds upon Storylines, enabling the aggregation and nesting of these dynamic, multi-entity relationships. We report on the design process of HyperStorylines, which was informed by discussions and workshops with data journalists; and on the results of a comparative study in which participants had to answer questions inspired by the tasks that journalists typically perform with such data. We observe that although HyperStorylines takes some practice to master, it performs better for identifying and characterizing relationships than the selected baseline visualization (PAOHVis) and was preferred overall.
我们介绍了HyperStorylines的设计和评估,HyperStorylines是一种概括故事线的技术,可以将涉及多种类型实体(例如人员、地点和公司)的关系演变可视化。描述这种多实体关系的数据集通常被建模为超图,这可能很难可视化,特别是当这些关系随着时间的推移而演变时。HyperStorylines构建在故事线之上,支持这些动态、多实体关系的聚合和嵌套。我们报道了HyperStorylines的设计过程,这是通过与数据记者的讨论和研讨会得知的;在一项比较研究的结果中,参与者必须回答一些问题,这些问题的灵感来自于记者通常使用这些数据执行的任务。我们观察到,虽然HyperStorylines需要一些练习来掌握,但它在识别和描述关系方面比选定的基线可视化(PAOHVis)表现得更好,并且总体上更受欢迎。
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引用次数: 9
Optimal layout of stacked graph for visualizing multidimensional financial time series data 多维金融时间序列数据可视化的堆叠图优化布局
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-09-14 DOI: 10.1177/14738716211045005
Yutian He, Hongjun Li
In the era of big data, the analysis of multi-dimensional time series data is one of the important topics in many fields such as finance, science, logistics, and engineering. Using stacked graphs for visual analysis helps to visually reveal the changing characteristics of each dimension over time. In order to present visually appealing and easy-to-read stacked graphs, this paper constructs the minimum cumulative variance rule to determine the stacking order of each dimension, as well as adopts the width priority principle and the color complementary principle to determine the label placement positioning and text coloring. In addition, a color matching method is recommended by user study. The proposed optimal visual layout algorithm is applied to the visual analysis of actual multidimensional financial time series data, and as a result, vividly reveals the characteristics of the flow of securities trading funds between sectors.
在大数据时代,多维时间序列数据的分析是金融、科学、物流、工程等领域的重要课题之一。使用堆叠图进行视觉分析有助于直观地揭示每个维度随时间的变化特征。为了呈现具有视觉吸引力和易读性的堆叠图,本文构造了最小累积方差规则来确定每个维度的堆叠顺序,并采用宽度优先原则和颜色互补原则来确定标签放置位置和文本着色。此外,通过用户研究,推荐了一种配色方法。将所提出的最优可视化布局算法应用于实际多维金融时间序列数据的可视化分析,生动地揭示了证券交易资金在行业间流动的特征。
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引用次数: 2
STFT-LDA: An algorithm to facilitate the visual analysis of building seismic responses STFT-LDA:一种便于建筑物地震反应可视化分析的算法
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-08-21 DOI: 10.1177/14738716211038618
Zhenge Zhao, Danilo Motta, M. Berger, J. Levine, I. B. Kuzucu, R. Fleischman, Afonso Paiva, C. Scheidegger
Civil engineers use numerical simulations of a building’s responses to seismic forces to understand the nature of building failures, the limitations of building codes, and how to determine the latter to prevent the former. Such simulations generate large ensembles of multivariate, multiattribute time series. Comprehensive understanding of this data requires techniques that support the multivariate nature of the time series and can compare behaviors that are both periodic and non-periodic across multiple time scales and multiple time series themselves. In this paper, we present a novel technique to extract such patterns from time series generated from simulations of seismic responses. The core of our approach is the use of topic modeling, where topics correspond to interpretable and discriminative features of the earthquakes. We transform the raw time series data into a time series of topics, and use this visual summary to compare temporal patterns in earthquakes, query earthquakes via the topics across arbitrary time scales, and enable details on demand by linking the topic visualization with the original earthquake data. We show, through a surrogate task and an expert study, that this technique allows analysts to more easily identify recurring patterns in such time series. By integrating this technique in a prototype system, we show how it enables novel forms of visual interaction.
土木工程师使用建筑物对地震力的反应的数值模拟来了解建筑物失效的性质,建筑规范的局限性,以及如何确定后者以防止前者。这样的模拟产生了多变量、多属性时间序列的大集合。对这些数据的全面理解需要支持时间序列的多变量特性的技术,并且可以跨多个时间尺度和多个时间序列本身比较周期性和非周期性的行为。在本文中,我们提出了一种从地震反应模拟产生的时间序列中提取这种模式的新技术。我们方法的核心是使用主题建模,其中主题对应于地震的可解释和判别特征。我们将原始时间序列数据转换为主题时间序列,并使用该可视化摘要来比较地震的时间模式,通过任意时间尺度的主题查询地震,并通过将主题可视化与原始地震数据联系起来,按需提供详细信息。我们通过代理任务和专家研究表明,该技术允许分析人员更容易地识别这种时间序列中的重复模式。通过将这种技术集成到原型系统中,我们展示了它如何实现新颖的视觉交互形式。
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引用次数: 1
Effects of screen-responsive visualization on data comprehension 屏幕响应可视化对数据理解的影响
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-08-18 DOI: 10.1177/14738716211038614
Sriram Karthik Badam, N. Elmqvist
Visualization interfaces designed for heterogeneous devices such as wall displays and mobile screens must be responsive to varying display dimensions, resolution, and interaction capabilities. In this paper, we report on two user studies of visual representations for large versus small displays. The goal of our experiments was to investigate differences between a large vertical display and a mobile hand-held display in terms of the data comprehension and the quality of resulting insights. To this end, we developed a visual interface with a coordinated multiple view layout for the large display and two alternative designs of the same interface – a space-saving boundary visualization layout and an overview layout – for the mobile condition. The first experiment was a controlled laboratory study designed to evaluate the effect of display size on the perception of changes in a visual representation, and yielded significant correctness differences even while completion time remained similar. The second evaluation was a qualitative study in a practical setting and showed that participants were able to easily associate and work with the responsive visualizations. Based on the results, we conclude the paper by providing new guidelines for screen-responsive visualization interfaces.
为墙壁显示器和移动屏幕等异构设备设计的可视化界面必须对不同的显示尺寸、分辨率和交互能力做出响应。在这篇论文中,我们报告了两项关于大显示器和小显示器视觉表示的用户研究。我们实验的目的是研究大型垂直显示器和移动手持显示器在数据理解和所得见解质量方面的差异。为此,我们为大型显示器开发了一个具有协调多视图布局的视觉界面,并为移动条件开发了同一界面的两种替代设计——节省空间的边界可视化布局和概览布局。第一个实验是一项对照实验室研究,旨在评估显示器大小对视觉表现变化感知的影响,即使完成时间保持相似,也会产生显著的正确性差异。第二项评估是在实际环境中进行的定性研究,表明参与者能够轻松地将反应性可视化联系起来并进行工作。基于这些结果,我们通过为屏幕响应可视化界面提供新的指导方针来总结本文。
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引用次数: 4
StoryFacets: A design study on storytelling with visualizations for collaborative data analysis StoryFacets:一项关于协作数据分析的可视化故事的设计研究
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-08-15 DOI: 10.1177/14738716211032653
Deok Gun Park, Mohamed Suhail, Minsheng Zheng, Cody Dunne, E. Ragan, N. Elmqvist
Tracking the sensemaking process is a well-established practice in many data analysis tools, and many visualization tools facilitate overview and recall during and after exploration. However, the resulting communication materials such as presentations or infographics often omit provenance information for the sake of simplicity. This unfortunately limits later viewers from engaging in further collaborative sensemaking or discussion about the analysis. We present a design study where we introduced visual provenance and analytics to urban transportation planning. Maintaining the provenance of all analyses was critical to support collaborative sensemaking among the many and diverse stakeholders. Our system, STORYFACETS, exposes several different views of the same analysis session, each view designed for a specific audience: (1) the trail view provides a data flow canvas that supports in-depth exploration + provenance (expert analysts); (2) the dashboard view organizes visualizations and other content into a space-filling layout to support high-level analysis (managers); and (3) the slideshow view supports linear storytelling via interactive step-by-step presentations (laypersons). Views are linked so that when one is changed, provenance is maintained. Visual provenance is available on demand to support iterative sensemaking for any team member.
在许多数据分析工具中,跟踪语义生成过程是一种成熟的实践,许多可视化工具有助于在探索期间和之后进行概述和回忆。然而,最终的交流材料,如演示文稿或信息图表,为了简单起见往往省略了出处信息。不幸的是,这限制了后来的观众参与进一步的合作意义构建或关于分析的讨论。我们提出了一项设计研究,我们将视觉来源和分析引入城市交通规划。维护所有分析的来源对于支持众多不同涉众之间的协作意义生成至关重要。我们的系统,STORYFACETS,公开了同一分析会话的几个不同视图,每个视图都是为特定的受众设计的:(1)跟踪视图提供了一个数据流画布,支持深入探索+来源(专家分析师);(2)仪表板视图将可视化和其他内容组织到一个填充空间的布局中,以支持高级分析(管理人员);(3)幻灯片视图支持通过交互式分步演示(外行人)进行线性讲故事。视图是链接在一起的,这样当一个视图发生更改时,就可以维护其来源。可视来源可以根据需要支持任何团队成员的迭代意义。
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引用次数: 10
VNLP: Visible natural language processing 可见自然语言处理
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-08-13 DOI: 10.1177/14738716211038898
Mohammad Alharbi, M. Roach, Tom Cheesman, R. Laramee
In general, Natural Language Processing (NLP) algorithms exhibit black-box behavior. Users input text and output are provided with no explanation of how the results are obtained. In order to increase understanding and trust, users value transparent processing which may explain derived results and enable understanding of the underlying routines. Many approaches take an opaque approach by default when designing NLP tools and do not incorporate a means to steer and manipulate the intermediate NLP steps. We present an interactive, customizable, visual framework that enables users to observe and participate in the NLP pipeline processes, explicitly manipulate the parameters of each step, and explore the result visually based on user preferences. The visible NLP (VNLP) pipeline design is then applied to a text similarity application to demonstrate the utility and advantages of a visible and transparent NLP pipeline in supporting users to understand and justify both the process and results. We also report feedback on our framework from a modern languages expert.
一般来说,自然语言处理(NLP)算法表现出黑盒行为。用户输入的文本和输出没有解释如何获得结果。为了增加理解和信任,用户重视透明的处理,它可以解释导出的结果,并能够理解底层的例程。在设计NLP工具时,许多方法默认采用不透明的方法,并且不包含引导和操纵中间NLP步骤的方法。我们提供了一个交互式、可定制的可视化框架,使用户能够观察和参与NLP管道过程,明确地操作每个步骤的参数,并根据用户偏好直观地探索结果。然后将可见NLP(VNLP)管道设计应用于文本相似性应用程序,以展示可见透明NLP管道在支持用户理解和证明过程和结果方面的实用性和优势。我们还报告了一位现代语言专家对我们的框架的反馈。
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引用次数: 5
Not just a pretty picture: Scientific fact visualisation styles, preferences, confidence and recall 不仅仅是一张漂亮的图片:科学事实的视觉化风格、偏好、自信和回忆
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-07-01 DOI: 10.1177/14738716211027587
E. Walsh, G. Sargent, W. Grant
Visuals are often used to enhance learning of scientific information. The recent emergence and popularity of comic-style instruction books for adults, such as the ‘manga guide to …’, shows the possibility of comic style visualisations for the communication of science with adults. This study investigates whether the addition and style of visual accompaniment of scientific information, as used in comic books, influences immediate and short-term fact recall in an adult audience. Participants (n = 310 aged 18–79, 52% identified as female) were presented 20 general science facts in one of five styles: (1) text alone, (2) photo with text caption, (3) cartoon with text caption, (4) photo with explanatory agent and a speech bubble, (5) cartoon with explanatory agent and a speech bubble. Immediate recall, and confidence in that recall, was tested following a brief distractor. Participants indicated their preferred presentation style, and short-term recall was tested by a final quiz of all 20 facts. Overall, the most preferred presentation style was cartoon with explanatory agent and text in a speech bubble (26% preferred). There was no single most effective presentation style; there was no significant difference in immediate recall, short term recall or confidence in answers depending on whether the fact was presented as text, photo or cartoon, or the presence or absence of an explanatory agent. However, immediate recall was significantly better when preference was met (p < 0.02). We found that the style of visual accompaniment of scientific information in accordance with the ‘manga guide to…’ format influenced immediate, but not short-term, fact recall in an adult audience when written English literacy, scientific literacy and non-verbal intelligence were taken into account. Short term recall of scientific facts may best be served by presenting facts in multiple styles, or enquiring about and then meeting participant preference for visual accompaniment.
视觉通常被用来增强对科学信息的学习。最近出现并流行的成人漫画风格的指导书,如“…的漫画指南”,表明了漫画风格的可视化在与成年人交流科学方面的可能性。本研究调查了漫画书中科学信息视觉伴奏的添加和风格是否会影响成年观众的即时和短期事实回忆。参与者(n = 310名年龄在18-79岁之间,52%为女性)以五种风格之一呈现了20个一般科学事实:(1)单独的文本,(2)带文本说明的照片,(3)带文本注释的漫画,(4)带解释剂和语音气泡的照片。在短暂的干扰后,测试了即时回忆和对回忆的信心。参与者指出了他们喜欢的演讲风格,并通过对所有20个事实的期末测验来测试短期回忆。总体而言,最喜欢的演讲风格是带有解释剂的卡通和演讲气泡中的文本(26%的人喜欢)。没有一种最有效的表达方式;即时回忆、短期回忆或对答案的信心没有显著差异,这取决于事实是否以文本、照片或漫画的形式呈现,或者是否存在解释剂。然而,当满足偏好时,立即回忆明显更好(p < 0.02)。我们发现,当考虑到书面英语素养、科学素养和非语言智力时,根据“…的漫画指南”格式的科学信息视觉伴奏风格会影响成年观众的即时但非短期的事实回忆。科学事实的短期回忆最好通过以多种风格呈现事实,或者询问并满足参与者对视觉伴奏的偏好。
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引用次数: 5
MuzLink: Connected beeswarm timelines for visual analysis of musical adaptations and artist relationships MuzLink:连接蜂群时间线,用于音乐改编和艺术家关系的视觉分析
IF 2.3 4区 计算机科学 Q3 COMPUTER SCIENCE, SOFTWARE ENGINEERING Pub Date : 2021-07-01 DOI: 10.1177/14738716211033246
F. Lévesque, Thomas Hurtut
The rise of open data in the cultural domain is democratizing access to complex datasets usually presented as large multivariate and multilayered graphs. However, the exploration of such datasets is challenging for laypersons. The objective of this work is to develop and evaluate a new method for exploring and understanding a specific type of multilayered graph that combines a large bipartite graph with a set of tree structures. This paper proposes MuzLink, an interactive visualization tool that allows the user to navigate, search, locate, and compare collaborative and influential relationships between musical artists through the exploration of musical adaptations. The proposed tool is based on a set of connected timelines visualizing how an artist’s collaborations, inspirations, and influences evolved over time. This design study is conducted in close collaboration with BAnQ, the national library and archives agency of the Quebec government. A controlled user study, done with a group of BAnQ users, and two case studies, show how the proposed approach is capable of performing a considerable set of analytical and exploratory tasks.
开放数据在文化领域的兴起,使得对复杂数据集的访问民主化,这些数据集通常以大型多元和多层图的形式呈现。然而,对这些数据集的探索对于外行人来说是具有挑战性的。这项工作的目的是开发和评估一种新的方法来探索和理解一种特殊类型的多层图,这种多层图结合了一个大的二部图和一组树结构。本文提出了MuzLink,这是一个交互式可视化工具,允许用户通过探索音乐改编来导航、搜索、定位和比较音乐艺术家之间的合作和影响关系。该工具基于一组相互关联的时间轴,可视化艺术家的合作、灵感和影响是如何随着时间的推移而演变的。这项设计研究是与魁北克政府的国家图书馆和档案机构BAnQ密切合作进行的。对一组BAnQ用户进行的受控用户研究和两个案例研究表明,所建议的方法如何能够执行大量的分析和探索性任务。
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引用次数: 3
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Information Visualization
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