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NewsLab: Exploratory broadcast news video analysis 07

NewsLab: Exploratory broadcast news video analysis

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IEEE Symposium on Visual Analytics Science and Technology

作者： Ghoniem, Mohammad Luo, Dongning Yang, Jing Ribarsky, William UNC Charlotte Charlotte NC USA

ISBN: (纸本)9781424416592

In this paper, we introduce NewsLab, an exploratory visualization approach for the analysis of large scale broadcast news video collections containing many thousands of news stories over extended periods of time. A river metaphor is used to depict the thematic changes of the news over time. An interactive lens metaphor allows the playback of fine-grained video segments selected through the river overview. Multi-resolution navigation is supported via a hierarchical time structure as well as a hierarchical theme structure. Themes can be explored hierarchically according to their thematic structure, or in an unstructured fashion using various ranking criteria. A rich set of interactions such as filtering, drill-down/roll-up navigation, history animation, and keyword based search are also provided. Our case studies show how this set of tools can be used to find emerging topics in the news, compare different broadcasters, or mine the news for topics of interest.

关键词： large data exploration broadcast video analysis time filtering clustering animation comparative analysis

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visualization and analysis of large graphs

Visualization and analysis of large graphs

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1st Ph.D. Workshop, PIKM 2007 - Co-Located with CIKM 2007

作者： Loubier, Eloïse Bahsoun, Wahiba Dousset, Bernard Institut de Recherche en Informatique de Toulouse 118 route de Narbonne 31062 Toulouse Cedex 9 France

ISBN: (纸本)9781595938329

In Knowledge engineering, synthesized information has often an evolving and relational form. Information representation using graphs may ease data interpretation for non-expert users. However this graph may be complex and simplifications are useful in order to ease analysis. In this article, we present VisuGraph, a powerful tool for graph drawing. This tool gives the possibility to reduce large graph by two techniques: the Markov CLustering algorithm (MCL) application and the global graph division in time-sliced visualizations in order to specify and to simplify temporal analysis. © 2007 ACM.

关键词： Clustering algorithms

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An integrated platform for spatial data mining within a GIS environment

An integrated platform for spatial data mining within a GIS ...

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IEEE 23rd International conference on data Engineering Workshop

作者： Appice, Annalisa Lanza, Antonietta Malerba, Donato Univ Bari Dipartimento Informat I-70126 Bari Italy

ISBN: (纸本)9781424408313

The strength of GIS is in providing a rich data infrastructure for combining disparate data in meaningful ways by using a spatial arrangement (e.g., proximity). As a toolbox, a GIS allows planners to perform spatial analysis using geo-processing functions such as map overlay, connectivity measurements or thematic map coloring. Although, this makes effective the geographic visualization of individual variables, complex multi-variate dependencies are easily overlooked. The required step to take GIS beyond a tool for automating cartography is to incorporate the ability of analyzing and condensing a large number of geo-referenced variables into a single forecast or score. This is where data mining promises great potential benefits and the reason why there is such a hand-in-glove fit between GIS and data mining. Following the mainstream of this research, we propose to integrate GIS and data mining functionality in a closely coupled open and extensible GIS architecture. This is done by resorting to emerging spatial data mining technology that deals with the substantial complexity added from the spatial dimension. We illustrate an example of topographic map interpretation where resorting to data mining facilities to discover both operational definitions of morphologies characterizing the landscape (i.e., spatial classification rules) and frequent spatial interactions of two or more spatially-referred objects (i.e., spatial association rules). In both cases, discovered patterns correspond to what geographers, geologists and town planners are interested in while interpreting a map, although they are never explicitly represented in topographic maps or in a GIS-model.

关键词： Geographic information systems

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Multipath data analysis and exploitation for the design of distributed radar systems

Multipath data analysis and exploitation for the design of d...

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conference on Radar Sensor Technology XI

作者： Mitra, Atindra K. Robinson, Philip LaRue, James Glett, John US Air Force Res Lab Griffiss AFB NY 13441 USA

ISBN: (纸本)9780819466693

A description of the design parameters for a scaled RF environment is presented. This scaled RF environment was developed for purposes of simulating and investigating multipath phenomena in urban environments. A number of experiments were conducted with this scaled urban environment including a series of tests with eight spatially distributed receivers and one transmitter. Details with regard to the instrumentation system along with the measurement philosophy are provided. The primary focus of this paper is a detailed treatment of data analysis and exploitation techniques for the multipath data generated by this scaled RF environment. A portion of the material on multipath data analysis and exploitation is focused on developing techniques for identifying a optimum placement of receiver pairs for purposes of maximizing information content on a embedded target. In other words, data from the eight distributed receiver locations are analyzed and techniques are presented that allow for the selection of receiver pairs that provide the most information on targets that are embedded within the multipath environment. The last section of the paper discusses visualization and pseudo-imaging techniques for targets embedded in multipath environments.

关键词： distributed radar systems multipath exploitation radar imaging

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Applications of micro-PIV technique in visualization of flow in microspace

Applications of micro-PIV technique in visualization of flow...

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International conference on Integration and Commercialization of Micro and Nanosystems 2007

作者： Wang, Ruijin Lin, Jianzhong Wang, Yifeng State Key Lab. of Fluid Power Trans. and Contr. Zhejiang University Hangzhou China School of Mechanical Engineering Zhejiang University of Science and Technology Hangzhou China China Jiliang University Hangzhou China

ISBN: (纸本)0791842657

A micro-resolution particle image velocimetry (micro-PIV) technique for flow visualization in microspace is presented here. The micro-PIV system was constructed through adding an epi-fluorescence microscope, improving the light source and choosing suitable tracing particle. According to smaller characteristic length of the flow in microscale and higher precision prolepsis, an image process technique based on cross correlation algorithm was conducted. To eliminate the main error caused by Brown motion of tracer particle, an approach by averaging the velocities of the ensemble particles in same interrogation plot was brought forward. Micro-PIV measure-ments of three typical flows (in a micromixer, near barriers and in a micro-jet) were carried out. The experimental results show that the micro-PIV system is suitable to both steady and unsteady flow in microscale. It is helpful to design micro-devices and analysis on data collected from such micro-devices. Copyright © 2007 by ASME.

关键词： Velocity measurement

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Redundancy reduction in 3D facial motion capture data for animation 07

Redundancy reduction in 3D facial motion capture data for an...

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APGV 2007: 4th Symposium on Applied Perception in Graphics and visualization

作者： Wellein, Daniela I. Curio, Cristóbal Bülthoff, Heinrich H. Max Planck Institute for Biological Cybernetics Tübingen Germany ICCAS University of Leipzig

Research on the perception of dynamic faces often requires realtime animations with low latency. With an adaptation of principal feature analysis [Cohen et al. 2002], we can reduce the number of facial motion capture ... 详细信息

ISBN: (纸本)159593670X

关键词： Face recognition

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An interactive visualization system for analyzing spacecraft telemetry

An interactive visualization system for analyzing spacecraft...

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2007 IEEE Aerospace conference

作者： Cancro, George Turner, Russell Nguyen, Lilian Li, Angela Sibol, Deane Gersh, John Piatko, Christine Montemayor, Jaime McKerracher, Priscilla Johns Hopkins University Applied Physics Laboratory 11100 Johns Hopkins Road Laurel MD 20723-6099

ISBN: (纸本)1424405254

Traditionally, the diagnosis of spacecraft anomalies during test and flight is slow and not very thorough due to a limited view of telemetry. The process is an off-line, linear analysis of guessing a root cause and then attempting to verify the guess through identifying and plotting telemetry channels over the appropriate time period. The desire of mission operators and testers is to have a capability to analyze all telemetry channels simultaneously and then be able to freely move through time to cover the entire problem space. Current telemetry display systems, however, only allow an operator to examine on the order of 100 telemetry channels simultaneously from a real-time stream, through a rudimentary playback, or step control of a telemetry archive. This limitation increases the risk that anomalies will be missed and increases the time to determine the real root-cause of the problem. This paper discusses the development and implementation of a visualization system that facilitates a thorough review by enabling an operator to analyze all telemetry data by pattern. This system, called the STEREO Autonomy Visualizer (SAV) also enables the rapid review of data by using a 'real-time random access' method for viewing real-time and archive telemetry streams. By using the system, STEREO testers have identified bugs that other test review techniques have missed, and decreased the time necessary to perform test review by more than a factor of 5. In addition, use of this system has resulted in a greater understanding of the spacecraft through the visualization of inter-relationships between telemetry channels during faults in flight. © 2007 IEEE.

关键词： Spacecraft

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High-resolution, parallel visualization of turbomachinery flowfields

High-resolution, parallel visualization of turbomachinery fl...

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43rd AIAA/ASME/SAE/ASEE Joint Propulsion conference

作者： List, Michael G. Turner, Mark G. Galbraith, Daniel S. Nimersheim, Jason A. Galbraith, Marshall C. University of Cincinnati Cincinnati OH 45221 Dept. of Aerospace Eng. and Eng. Mechanics PO Box 210070 AIAA

ISBN: (纸本)1563479036

As the demand for high-fidelity simulations of time-accurate flow fields has increased, it has become necessary to develop methods for quickly analyzing features and extracting results without significantly increasing post-processing time or data storage. In response, a suite of parallel Turbomachinery post- and co-processing and visualization tools are under development. The result has been a streamlined process for the visualization of massive data sets utilizing available computer power to distribute memory and processor requirements. As a case study, this process has been applied to a high-resolution, quarter annulus simulation of a compressor simulated with TURBO on 912 supercomputer processors. Interactive visualization of features such as isosurfaces was carried out on 23 to 88 commodity processors, demonstrating application scalability and viability for use on PC Linux clusters. This also allowed continuity of the investigation as it was possible to work with the entire simulated domain at once with rotor and stator rows properly aligned, rather than one passage at a time. This posed a new challenge, as standard sized monitors no longer were able to fit the full dataset and convey meaningful levels of detail. High-resolution visualization, images, and movies have now become an important and standard part of the analysis process. Control has also been passed to a 5 degree-of-freedom device that allows intuitive control and interaction of 3-D data sets.

关键词： Flow fields

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A visualization framework for task-oriented modeling using UML

A visualization framework for task-oriented modeling using U...

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40th Annual Hawaii International conference on System Sciences 2007, HICSS'07

作者： Lange, Christian F. J. Wijns, Martijn A. M. Chaudron, Michel R. V. Department of Mathematics and Computer Science Technische Universiteit Eindhoven P.O. Box 513 5600 MB Eindhoven Netherlands

ISBN: (纸本)0769527558

The UML is a collection of 13 diagram notations to describe different views of a software system. The existing diagram types display model elements and their relations. Software engineering is becoming more and more model-centric, such that software engineers start using UML models for more tasks than just describing the system. Tasks such as analysis or prediction of system properties require additional information such as metrics of the UML model or from external sources, e.g. a version control system. In this paper we identify tasks of modelcentric software engineering and information that is required to fulfill these tasks. We propose views to visualize the information to support fulfilling the tasks. This paper reports on industrial case studies and a light-weight user experiment to validate the usefulness of the proposed views that are implemented in our MetricView Evolution tool. © 2007 IEEE.

关键词： data visualization

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Concepts for an agent-based visualization tool for presentation of information with uncertainty

Concepts for an agent-based visualization tool for presentat...

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conference on Display Technologies and Applications for Defense Applications For Defense, Security, and Avionics

作者： Gallimore, Jennie J. Woodley, Robert Noll, Warren Barnes, April Wright State Univ Dept BIE 3640 Colonel Glenn Hwy Dayton OH 45435 USA 21st Century Syst Inc Leonard Wood MO 65473 USA

ISBN: (纸本)9780819466808

To facilitate decision making tasks it is necessary to be able to "see" the situation. An enormous array of intelligence gathering, database, and sensor sources of information are available. Methods for visualizing the information must be established and information presented in such a way that human attention is captured and maintained on the most critical aspects of the information. visualizations need to adapt to the changing circumstances to show the most relevant information at that time. We are developing a system called Holistic analysis, visualization, & Characterization Assessment Tool (HAVCAT) that uses intelligent agents that interact with the user to provide the correct information at the right time. This cutting edge system will enable visualization researchers to investigate techniques for adjusting visualizations based on user performance HAVCAT will employ domain ontologies to determine relationships within the data. The HAVCAT evidence reasoning agent distills the data and extracts the most pertinent actions or consequences. This paper describes the HAVCAT concepts and also research issues related to development of HAVCAT and techniques for directing user attention.

关键词： visualization intelligent agents adaptive displays

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