At Sólheimajökull glacier in southern Iceland, field evidence has been collected of a Tenth Century jökulhlaup (or glacial outburst flood). It was an exceptional event in terms of generation, scale, magnitude and geomorphic impact. Although now fragmented and piecemeal, many of its direct (and indirect) geomorphological and sedimentary markers have been identified, mapped and dated to unravel the sequence of events played out during this significant episode in the glacial history. 'VolcVis', an innovative, customised visualisation platform using computer gaming technology is developed and applied for the first time in coalescing and displaying field results from Sólheimajökull, creating an interactive, multi-perspective, three-dimensional (3D) prototype model. A visual simulation of Sólheimajökull's Tenth Century physical environment places the flood into geomorphic and topographic context. This ability to dynamically display and interpret field data presents new possibilities for testing hypotheses, and for data sharing with Icelandic hazard mitigation authorities and the general public.
{"title":"Applying 3D Dynamic Visualisation to (Palaeo) Geomorphic Reconstruction: Modelling a Tenth Century Jökulhlaup at Sólheimajökull Glacier, South Iceland","authors":"Laura M. Booth, J. Isaacs","doi":"10.1109/IV.2013.78","DOIUrl":"https://doi.org/10.1109/IV.2013.78","url":null,"abstract":"At Sólheimajökull glacier in southern Iceland, field evidence has been collected of a Tenth Century jökulhlaup (or glacial outburst flood). It was an exceptional event in terms of generation, scale, magnitude and geomorphic impact. Although now fragmented and piecemeal, many of its direct (and indirect) geomorphological and sedimentary markers have been identified, mapped and dated to unravel the sequence of events played out during this significant episode in the glacial history. 'VolcVis', an innovative, customised visualisation platform using computer gaming technology is developed and applied for the first time in coalescing and displaying field results from Sólheimajökull, creating an interactive, multi-perspective, three-dimensional (3D) prototype model. A visual simulation of Sólheimajökull's Tenth Century physical environment places the flood into geomorphic and topographic context. This ability to dynamically display and interpret field data presents new possibilities for testing hypotheses, and for data sharing with Icelandic hazard mitigation authorities and the general public.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133645165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Stojanovic, D. Blackwood, D. Gilmour, J. Isaacs, R. Falconer
The use of games-based visualisation technology allows for the development of sophisticated interactive 3D decision support tools. Components of these tools are the various real-time rendering methods that are implemented to facilitate the interactive 3D aspect of the visualisations. Modern graphics hardware allows for the implementation of both simple and complex GPU shader programs. Shaders can be used to compute material and lighting properties that can greatly influence the visual style of a 3D scene. The research presented here shows that more sophisticated 3D shading methods increase user preference when used to render close up scenes. The research also shows that simpler shading methods can still be used to render distant scenes with less visual details present.
{"title":"Comparison of Advanced and Standard Real-Time 3D Rendering Methods for Interactive Landscapes (Short Paper Version)","authors":"V. Stojanovic, D. Blackwood, D. Gilmour, J. Isaacs, R. Falconer","doi":"10.1109/IV.2013.73","DOIUrl":"https://doi.org/10.1109/IV.2013.73","url":null,"abstract":"The use of games-based visualisation technology allows for the development of sophisticated interactive 3D decision support tools. Components of these tools are the various real-time rendering methods that are implemented to facilitate the interactive 3D aspect of the visualisations. Modern graphics hardware allows for the implementation of both simple and complex GPU shader programs. Shaders can be used to compute material and lighting properties that can greatly influence the visual style of a 3D scene. The research presented here shows that more sophisticated 3D shading methods increase user preference when used to render close up scenes. The research also shows that simpler shading methods can still be used to render distant scenes with less visual details present.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133036358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael Burch, S. Lohmann, Daniel Pompe, D. Weiskopf
Tag clouds are a popular way to visually represent word frequencies. However, one major limitation is that they do not relate different word forms but treat every form as an individual tag. This results not only in a non-efficient use of screen space but, in particular, leaves the viewer with no indication whether there are other forms of a word or not. To overcome this limitation, we introduce prefix tag clouds: a visualization technique that uses a prefix tree to group different word forms and visualizes the sub trees as tag cloud. The grouping is emphasized by color, while the relative frequencies of the word forms are indicated by font size. A circular tag cloud layout supports the quick identification of the most frequent words and word forms. We show the usefulness of the approach for a large dataset of paper titles from the computer science bibliography DBLP.
{"title":"Prefix Tag Clouds","authors":"Michael Burch, S. Lohmann, Daniel Pompe, D. Weiskopf","doi":"10.1109/IV.2013.5","DOIUrl":"https://doi.org/10.1109/IV.2013.5","url":null,"abstract":"Tag clouds are a popular way to visually represent word frequencies. However, one major limitation is that they do not relate different word forms but treat every form as an individual tag. This results not only in a non-efficient use of screen space but, in particular, leaves the viewer with no indication whether there are other forms of a word or not. To overcome this limitation, we introduce prefix tag clouds: a visualization technique that uses a prefix tree to group different word forms and visualizes the sub trees as tag cloud. The grouping is emphasized by color, while the relative frequencies of the word forms are indicated by font size. A circular tag cloud layout supports the quick identification of the most frequent words and word forms. We show the usefulness of the approach for a large dataset of paper titles from the computer science bibliography DBLP.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120974444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This work describes and evaluates a novel interactive visual clustering system. It combines a 2D projection with a clustering algorithm that operates on this projected data. Users can interact directly through the 2D representation, by providing examples according to their expert ground truth. Each interaction incrementally updates the 2D projection and the associated clustering. Experiments show the effectiveness of the method, with as few as one interaction leading to a tangible influence on the visualization.
{"title":"An Interactive, Example-Based, Visual Clustering System","authors":"P. Bruneau, B. Otjacques","doi":"10.1109/IV.2013.21","DOIUrl":"https://doi.org/10.1109/IV.2013.21","url":null,"abstract":"This work describes and evaluates a novel interactive visual clustering system. It combines a 2D projection with a clustering algorithm that operates on this projected data. Users can interact directly through the 2D representation, by providing examples according to their expert ground truth. Each interaction incrementally updates the 2D projection and the associated clustering. Experiments show the effectiveness of the method, with as few as one interaction leading to a tangible influence on the visualization.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132336843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Visual attention and eye movement are important subjects of investigation with a wide area of application scenarios. The analysis of eye tracking data comprises examinations of differences between subjects and groups of subjects and identification of patterns and outliers within and between groups. To allow for such complex queries in an intuitive way, we present an interactive visual analysis tool using coordinated views. The views display areas of interest, statistical graphics of fixation times and time series and comprise novel visual encodings for spatiotemporal analysis and subject similarities. Interaction mechanisms allow for a refined analysis that takes into account all aspects of the data. We apply our approach to eye tracking data from psychological experiments and conduct a case study to demonstrate its effectiveness and intuitiveness.
{"title":"EyeC: Coordinated Views for Interactive Visual Exploration of Eye-Tracking Data","authors":"Gordan Ristovski, M. Hunter, B. Olk, L. Linsen","doi":"10.1109/IV.2013.32","DOIUrl":"https://doi.org/10.1109/IV.2013.32","url":null,"abstract":"Visual attention and eye movement are important subjects of investigation with a wide area of application scenarios. The analysis of eye tracking data comprises examinations of differences between subjects and groups of subjects and identification of patterns and outliers within and between groups. To allow for such complex queries in an intuitive way, we present an interactive visual analysis tool using coordinated views. The views display areas of interest, statistical graphics of fixation times and time series and comprise novel visual encodings for spatiotemporal analysis and subject similarities. Interaction mechanisms allow for a refined analysis that takes into account all aspects of the data. We apply our approach to eye tracking data from psychological experiments and conduct a case study to demonstrate its effectiveness and intuitiveness.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114543699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Roberto Yuri da Silva Franco, B. Meiguins, A. Meiguins
This paper aims to minimize the problems encountered in the handling of large amounts of visual data, proposing a scalable environment for distributed applications and information visualization (IV) with multiple coordinated views. The benefits of this architecture are improving the processing power for visualization tools, reduce the rendering time of visualization techniques, reducing the problem of occlusion and aggregation, among others. We will be presented usability testing, and comparative testing of performance (rendering time, memory usage, and processor) with an application of IV in a single desktop.
{"title":"PRISMA-MDE - Information Visualization Environment for Multiple Display","authors":"Roberto Yuri da Silva Franco, B. Meiguins, A. Meiguins","doi":"10.1109/IV.2013.18","DOIUrl":"https://doi.org/10.1109/IV.2013.18","url":null,"abstract":"This paper aims to minimize the problems encountered in the handling of large amounts of visual data, proposing a scalable environment for distributed applications and information visualization (IV) with multiple coordinated views. The benefits of this architecture are improving the processing power for visualization tools, reduce the rendering time of visualization techniques, reducing the problem of occlusion and aggregation, among others. We will be presented usability testing, and comparative testing of performance (rendering time, memory usage, and processor) with an application of IV in a single desktop.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123990661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Business Intelligence (BI) provides methods for analyzing business-critical information and supports decision-making processes. Interactivity or the possibility to engage in an active discourse with the representation lies at the core of Information Visualization and Visual BI. However, current work practice and users' perspectives on visualization and interactivity in BI have not been investigated yet. As a first step in this direction, a qualitative empirical study was conducted among six IT-managers working in the field of BI. Main results are that interactive visual methods in BI are not used very often in practice. One of the main reasons reported is the fact that visualization is still two steps ahead and at the moment mostly more basic problems concerning data gathering, data modeling and data quality prevail. Moreover, most users are used to work with numbers and tables and are not aware of the possibilities in terms of visualization. However, the interviewed IT-managers acknowledged that using more interactive visual methods in BI would be beneficial for users.
{"title":"Current Work Practice and Users' Perspectives on Visualization and Interactivity in Business Intelligence","authors":"W. Aigner","doi":"10.1109/IV.2013.38","DOIUrl":"https://doi.org/10.1109/IV.2013.38","url":null,"abstract":"Business Intelligence (BI) provides methods for analyzing business-critical information and supports decision-making processes. Interactivity or the possibility to engage in an active discourse with the representation lies at the core of Information Visualization and Visual BI. However, current work practice and users' perspectives on visualization and interactivity in BI have not been investigated yet. As a first step in this direction, a qualitative empirical study was conducted among six IT-managers working in the field of BI. Main results are that interactive visual methods in BI are not used very often in practice. One of the main reasons reported is the fact that visualization is still two steps ahead and at the moment mostly more basic problems concerning data gathering, data modeling and data quality prevail. Moreover, most users are used to work with numbers and tables and are not aware of the possibilities in terms of visualization. However, the interviewed IT-managers acknowledged that using more interactive visual methods in BI would be beneficial for users.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128310255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Methodologies for complex systems diagnosis and verification have long been studied as part of systems engineering research. Most techniques involve decomposing the complex system into smaller connected components, and analyzing those. We describe the implementation and evaluation of a visualization tool which enhances drawings of physical components with information visualization artifacts for analyzing complex systems and their operating capability. Our visualization was designed to help users navigate through complex systems composed of multiple layers of components, identify if the system is ready to complete a task based on availability and performance of its components, and efficiently diagnose system malfunctions. A formal evaluation shows that our visualization tool enables users to diagnose complex systems faster than using conventional workflows.
{"title":"Combining Scientific and Information Visualization Artifacts for Complex System Diagnosis","authors":"A. Rusu, R. Jianu","doi":"10.1109/IV.2013.17","DOIUrl":"https://doi.org/10.1109/IV.2013.17","url":null,"abstract":"Methodologies for complex systems diagnosis and verification have long been studied as part of systems engineering research. Most techniques involve decomposing the complex system into smaller connected components, and analyzing those. We describe the implementation and evaluation of a visualization tool which enhances drawings of physical components with information visualization artifacts for analyzing complex systems and their operating capability. Our visualization was designed to help users navigate through complex systems composed of multiple layers of components, identify if the system is ready to complete a task based on availability and performance of its components, and efficiently diagnose system malfunctions. A formal evaluation shows that our visualization tool enables users to diagnose complex systems faster than using conventional workflows.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130173714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, a technique for visualizing the changing rank and value of events simultaneously with time, as well as a trend analysis tool that uses the resulting visualization, are proposed. This technique facilitates analysts' understanding of the trends of both the entire data set and each event. It also uses colors, which are estimated automatically from the events' text labels, to represent the category to which events belong. Using the tool, the authors analyzed trends of topic data extracted from Twitter as use case, and could observe the trends and overview of Twitter. In addition, using the tool it is possible to present the different ways in which people who use different media think, using media-generated data.
{"title":"Trend Analysis Tool with Simultaneous Visualization of Rank and Value","authors":"Saori Okubo, Tomoya Iwakura, Kazuo Misue","doi":"10.1109/IV.2013.69","DOIUrl":"https://doi.org/10.1109/IV.2013.69","url":null,"abstract":"In this paper, a technique for visualizing the changing rank and value of events simultaneously with time, as well as a trend analysis tool that uses the resulting visualization, are proposed. This technique facilitates analysts' understanding of the trends of both the entire data set and each event. It also uses colors, which are estimated automatically from the events' text labels, to represent the category to which events belong. Using the tool, the authors analyzed trends of topic data extracted from Twitter as use case, and could observe the trends and overview of Twitter. In addition, using the tool it is possible to present the different ways in which people who use different media think, using media-generated data.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121114843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The lexical features of notes taken during blended and fully online courses were analysed to improve learning activity, as the contents of notes can be used to facilitate course evaluation. The lexical contents of student's notes was used to analyse the note taking behaviour in both blended and fully online courses. Features such as the number of terms, the word ratios of student's notes and the degree of coverage of the lecturer's notes were compared. The relationships between learning performance and note-taking behaviour were also analysed. The causal relationships between student's characteristics and note assessments were statistically compared, and contributing factors were extracted.
{"title":"Effectiveness of Note-Taking Content Features on Test Scores in Online Courses","authors":"M. Nakayama, K. Mutsuura, Hiroh Yamamoto","doi":"10.1109/IV.2013.59","DOIUrl":"https://doi.org/10.1109/IV.2013.59","url":null,"abstract":"The lexical features of notes taken during blended and fully online courses were analysed to improve learning activity, as the contents of notes can be used to facilitate course evaluation. The lexical contents of student's notes was used to analyse the note taking behaviour in both blended and fully online courses. Features such as the number of terms, the word ratios of student's notes and the degree of coverage of the lecturer's notes were compared. The relationships between learning performance and note-taking behaviour were also analysed. The causal relationships between student's characteristics and note assessments were statistically compared, and contributing factors were extracted.","PeriodicalId":354135,"journal":{"name":"2013 17th International Conference on Information Visualisation","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126613662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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