Twitter currently receives about 190 million tweets (small text-based Web posts) a day, in which people share their comments regarding a wide range of topics. A large number of tweets include opinions about products a...
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The paper aim is suggests a way of improvement opportunities for existing solution in Business Intelligence (BI) product architecture. The useful inspirations are links to database and operating systems. BI architectu...
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ISBN:
(纸本)9783642223884
The paper aim is suggests a way of improvement opportunities for existing solution in Business Intelligence (BI) product architecture. The useful inspirations are links to database and operating systems. BI architecture is too wide, recommended merger leads to simplification on base integration of system sources and available methods for data integration. BI products offer procedures with stored data for future data processing. The benefit is the advantage of a relatively large variety of analyses, although a question remains concerning their utility and the complexity of the implementation. For the evaluation of practical applications, they must accept the dynamic and diverse needs of business and individuals. Presented analysis of selected products is based on Petri Nets with simulation support, and future analysis using an incidence matrix and reachable markings. This analysis helps in search of new perspectives and innovations.
Never before in history data has been generated and collected in such high volumes as it is today. Keeping up to date with the flood of data, using standard tools for dataanalysis and exploration, is fraught with dif...
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ISBN:
(纸本)9781450307321
Never before in history data has been generated and collected in such high volumes as it is today. Keeping up to date with the flood of data, using standard tools for dataanalysis and exploration, is fraught with difficulty. Visual analytics seeks to provide people with better and more effective ways to understand and analyze large datasets, while also enabling them to act upon their findings immediately. The field integrates the analytic capabilities of the computer and the abilities of the human analyst, allowing novel discoveries and empowering individuals to take control of the analytical process. In this paper we present the challenges of visual analytics and exemplify them with a couple of application examples that illustrate the existing potential of current visual analysis techniques but also their limitations.
This paper proposes a method to identify and visualize repetitive structures in music in PCM format using a similarity matrix. The Hough transform is used on the matrix to identify repetitions in a tune. Identified st...
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As the traditional image segmentation methods can not show the location targets of object clearly and accurately. The paper base on statistical analysis and 3D region growing segmentation method of the liver. First of...
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In recent years we witnessed an impressive advance in the social networks field, which became a "hot" topic and a focus of considerable attention. Also, the development of methods that focus on the analysis ...
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ISBN:
(纸本)9783642247682
In recent years we witnessed an impressive advance in the social networks field, which became a "hot" topic and a focus of considerable attention. Also, the development of methods that focus on the analysis and understanding of the evolution of data are gaining momentum. In this paper we present an approach to visualize the evolution of dynamic social networks by using Tucker decomposition and the concept of trajectory. Our visualization strategy is based on trajectories of network's actors in a bidimensional space that preserves its structural properties. Furthermore, this approach can be used to identify similar actors by comparing the shape and position of the trajectories. To illustrate the proposed approach we conduct a case study using a set of temporal friendship networks.
The proceedings contain 100 papers. The topics discussed include: the effects of image speed and overlap on image recognition;drawing semi-bipartite graphs in anchor+matrix style;visualizing tags with spatiotemporal r...
ISBN:
(纸本)9780769544762
The proceedings contain 100 papers. The topics discussed include: the effects of image speed and overlap on image recognition;drawing semi-bipartite graphs in anchor+matrix style;visualizing tags with spatiotemporal references;evaluating a cube-based user interface for exploring music collections;visualizing the effects of logically combined filters;combined vs. separate views in matrix-based graph analysis and comparison;concentric sliders to display partial satisfaction of query criteria;design considerations for drill-down charts;a task based performance evaluation of visualization approaches for categorical dataanalysis;developing and applying a user-centered model for the design and implementation of information visualization tools;evaluation of parallel coordinates for interactive alarm filtering;evaluating a potentiometer-based graphical user interface for interacting with a music recommendation service;and interactive information visualization for sense-making in power grid supervisory systems.
In this paper, a new set of data signatures is derived to obtain better Vector Fusion 2D visualizations of a time series and periodic nD traffic data set as compared with previous work. The latter had used the entire ...
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To understand heat transfer process and climatic response process in the Qinghai-Tibet highway subgrade, lots of long-term ground temperature observation systems have been deployed to obtain the periodic temperature v...
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ISBN:
(纸本)9783642252549
To understand heat transfer process and climatic response process in the Qinghai-Tibet highway subgrade, lots of long-term ground temperature observation systems have been deployed to obtain the periodic temperature values. Contour maps were used to analysis these data for study permafrost changes. This paper is to fully utilize the powerful drawing software Surfer through the embedded programming of Visual Basic 6.0. A visualization and analysis software of permafrost change process has been quickly realized by this hybrid programming method. Compared with the original method, it saves time of developing application program to draw contour maps, but also ensure accuracy and efficiency. It also helps researchers to find characteristics and regular patterns of permafrost change process in Qinghai-Tibet highway easily.
In recent years, many government agencies have published statistical information as Linked Open data (e.g. Eurostat, ***). Yet, while there are a number of visualization tools, researchers use data for scientific stat...
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In recent years, many government agencies have published statistical information as Linked Open data (e.g. Eurostat, ***). Yet, while there are a number of visualization tools, researchers use data for scientific statistical analysis to answer their research questions. Currently, they have to download the statistical data in a table-based format, in order to use their statistics software, unfortunately losing all the benefits Linked data provides to them like interlinking with other data sets. In this paper, we present an approach specifically designed to help researchers to perform statistical analysis on Linked data. By combining distributed sources with SPARQL, we are able to apply simple statistical calculations, such as linear regression and present the results to the user. Results of testing these calculations with heterogeneous data sources expose a wide range of typical issues on data integration which have to be aware of when working with heterogeneous statistical data.
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