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Ontologies are becoming popular in various communities. They give users the possibilities to understand, exchange, analyze or share knowledge of a specific domain. However ontologies can be very large and complex and therefore visualizations should help the user to understand and manipulate ontologies easily. Most visualizations concentrate on the structure of ontologies. For users, instances are...
With the increasing complexity of in-car communication architectures, their diagnostics have become essential for automotive development and maintenance. In order to help engineers to detect and analyze the potential sources and consequences of errors, it is crucial to provide both comprehensive and detailed insight into the communication processes and their contexts. Two important aspects of these...
This paper describes a support system for collaborative research activities in university laboratories. The system includes (1) a research information transition graph (RITG) to visually express research information and the relationships among the information for personal management, and (2) a method that enables collaborative research activities and knowledge sharing on a large scale by converting...
Recently, Web browser based applications have become very popular in many domains. However, the specific requirements of interactive Information Visualization (InfoVis) applications in terms of graphics performance and interactivity have not yet been investigated systematically in this context. In order to assess browser-based application platforms, we provide a systematic comparison of server-based...
The following topics are dealt with: information visualisation; Web visualisation; multiple coordinated views; visual analytics; data mining; open source intelligence; geoanalytics; cultural heritage knowledge domain visualisation; design visualisation; HCI; software engineering; graph theory.
In spite of the political discourse dominating heritage issues, despite academic constraints and a certain cross-disciplinary inflexibility, photographs have now come to be considered part of our cultural heritage.
Kimono is a key point in Japanese culture. In the kimono market, one type of kimono was called Yukata. Yukata is always produced in mass production in considering price. In order to promote prestigious kimonos, kimono stores usually present new styles or customer-tailored designs in response to different seasons. Of the varied kimonos, it is possible to let customers choose the style they prefer....
Alternative visualization designs provide different solutions that may be more effective for various tasks. Methods such as mechanical, symbolic and natural analogies aid ideation of alternative information visualizations. Issues include metaphor entrapment and implementation effectiveness.
Engineering surfaces are characterized by the form, waviness and roughness features that are comprised of a range of spatial wavelengths. Filtering techniques are commonly adopted to separate these different wavelength components into well-defined bandwidths for further processing. The Gaussian filtered surface in which a 2D Gaussian filter is employed for surface assessments has been recommended...
Hierarchically structured data collections often need to be visualized for the purposes of digital information management and presentation. File browsing, in particular, has an inherent hierarchical structure and plays an important role in the context of personal information management (PIM). A multitude of file browsers are nowadays available, offering different functionalities, while users adopt...
Empirical comparisons and categorizations of information visualization tools lack important considerations: the former undervalue the need for a theoretical background, and the latter tend to have too much distance from the user because they do not consider definite user tasks. Therefore, our work combines these approaches and presents the results of both a qualitative evaluation and a recently published...
In this paper, we describe solutions how pixel-based visualization techniques can support the decision making process for investors on the financial market. We especially focus on explorative interactive techniques where analysts try to analyze large amounts of financial data for long-term investments, and show how visualization can effectively support an investor to gain insight into large amounts...
The Internet is one of the fastest growing areas of intelligence gathering. During their navigation Web users leave many records of their activity. This huge amount of data can be a useful source of knowledge. Advanced mining processes are needed for this knowledge to be extracted, understood and used. Web Usage Mining (WUM) systems are specifically designed to carry out this task by analyzing the...
In general, digital information resources can be categorized into three categories, text, voice (audio) and image (video). This article discusses a theoretical method of information visualization system and its corresponding technologies. The system is the results of the project (70473068) supported by the National Natural Science Foundation of China. The paper specifically discusses constructing...
Tag clouds are text-based visual representations of a set of tags usually depicting tag importance by font size. Recent trends in social and collaborative software have greatly increased the popularity of this type of visualization. This paper proposes a family of novel algorithms for tag cloud layout and presents evaluation results obtained from an extensive user study and a technical evaluation...
Conventional force directed graph drawing methods aim to produce aesthetically pleasing visualization of graphs. The edges of the graph have more or less equal length, and there are as few crossing edges as possible. This paper proposes a new e-spring algorithm for visualizing clustered directed acyclic graphs (DAGs) without node overlapping, extended from the popular spring embedder model. In our...
People within and outside the information visualization community are motivated to create new tools to address their own unique problems of understanding data. However, the techniques which visualizations use to enhance cognition of data are not widely known outside the field. Also, there are currently few resources which comprehensively describe methods for designing novel visualizations. Consequently,...
Data sets containing a combination of categorical and continuous variables (mixed data sets) are difficult to analyse since no generalized similarity measure exists for categorical variables. Quantification of categorical variables makes it possible to represent this type of data using techniques designed for numerical data. This paper presents a quantification process of categorical variables in...
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