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Annual Meeting of the Association of American Geographers, 2005

ISBN: (纸本)9783642375323

The proceedings contain 25 papers. The special focus in this conference is on American Geographers. The topics include: Geographic hypermedia;design issues associated with discrete and distributed hypermedia gis;using data from earth orbiting satellites in geo-hypermedia applications;exploring the use of a virtual map shop as an interface for accessing geographical information;atlases from paper to digital medium;hypermedia maps and the internet;in pursuit of usefulness: resetting the design focus for mobile geographic hypermedia systems;merging hypermedia gis with spatial on-line analytical processing;a hypermedia afghan sites and monuments database;towards the development of open cartographic hypermedia systems;standards for geographic hypermedia: mpeg, ogc and co.;semantically-aware systems;towards a typology of interactivity functions for visual map exploration;a framework for using coordinated displays for the analysis of multidimensional, spatial, and temporal data;visualization and hypermedia for decision making;geovisualization of vegetation patterns in national parks of the southeastern united states;visualization of spatial change;scalable vector graphics interfaces for geographic applications;about the role of cartographic presentation for wayfinding;wireless campus lbs: building campus-wide location based services based on wifi technology;developing web-gis applications according to hci guidelines;high definition geovisualization;mobile geographic education.

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PBTree - A new progressive and hierarchical representation for network-based navigation in densely built urban environments

PBTree - A new progressive and hierarchical representation f...

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conference on Technologies and Tools for 3D-Imaging

作者： Royan, J Bouville, C Gioia, P France Telecom R&D F-35510 Cesson Sevigne France

This paper describes a novel progressive and hierarchical representation for densely built urban areas. It aims at navigating through huge urban environments with network-based client-server systems. Thanks to this method, navigation is no longer limited to walkthrough, but allows flying over the city. This can be achieved through a set of dedicated algorithms allowing the decomposition of city into a multi resolution representation. The method efficiently exploits the fact that automated modelling technologies of urban scenes are generally based on the processing of 2D data (video, photographs, cadastral map,...), to model 2D1/2 data (building footprint, height, altitude,...) which turns out to be more compact. From this pre-computed representation of buildings, the server progressively sends the perceptible details to the client for all the regions visible from a given viewpoint.

关键词： three dimensional model three dimensional representation urban area hypermedia navigation interactive mode multiresolution analysis visualization client-server architecture

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Discovering changing demographics in the canadian census using data analysis 33

Discovering changing demographics in the canadian census usi...

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33rd International conference on Computers and Their Applications, CATA 2018

作者： Anderson, Brett El-Hajj, Mohamad Kipp, Zachary Staples, Jack Department of Computer Science MacEwan University EdmontonABT5J 2P2 Canada

ISBN: (纸本)9781943436101

The 2015 Canadian census data has been released on a graduated schedule throughout 2017, offering new opportunities to research the many demographics of the country. In this paper, data analytic techniques are used to examine the Income, Ethnicity, Marriage, and Language datasets available to the public through Statistics Canada. Insights into where Canada has changed over the past decade are studied by comparing the 2005 and 2015 population information that is available within those datasets. With data mining techniques like linear regression, decision trees, and visualization we explore the available demographics and examine the characteristics that define areas which have seen significant growth or decline over the past ten years. From looking at income there were strong correlations between gender and the distribution of the wealth, as well as age having a high positive correlation with wealth. When looking at ethnicity, there was a strong correlation between marital status and the ethnicity present in that locations as well as the other ethnicities that would be found in that location. Copyright ISCA, CATA 2018.

关键词： data mining

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Robotics and local fusion

Robotics and local fusion

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conference on Unmanned Ground Vehicle Technology VII

作者： Emmerman, PJ ElanTech Inc. (United States)

ISBN: (纸本)0819457892

Teams of robots or mixed teams of warfighters and robots on reconnaissance and other missions can benefit greatly from a local fusion station. A local fusion station is defined here as a small mobile processor with interfaces to enable the ingestion of multiple heterogeneous sensor data and information streams, including blue force tracking data. These data streams are fused and integrated with contextual information (terrain features, weather, maps, dynamic background features, etc.), and displayed or processed to provide real time situational awareness to the robot controller or to the robots themselves. These blue and red force fusion applications remove redundancies, lessen ambiguities, correlate, aggregate, and integrate sensor information with context such as high resolution terrain. Applications such as safety, team behavior, asset control, training, pattern analysis, etc. can be generated or enhanced by these fusion stations. This local fusion station should also enable the interaction between these local units and a global information world.

关键词： robotics information fusion visualization

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Robust prediction of three-dimensional spinal curve from back surface for non-invasive follow-up of scoliosis

Robust prediction of three-dimensional spinal curve from bac...

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Medical Imaging 2005 conference

作者： Bergeron, C Labelle, H Ronsky, J Zernicke, R Ecole Polytech Dept Math Appl Lab Imagerie & Vis 4D Montreal PQ H3T 3A7 Canada

ISBN: (纸本)0819457183

Spinal curvature progression in scoliosis patients is monitored from X-rays, and this serial exposure to harmful radiation increases the incidence of developing cancer. With the aim of reducing the invasiveness of follow-up, this study seeks to relate the three-dimensional external surface to the internal geometry, having assumed that that the physiological links between these are sufficiently regular across patients. A database was used of 194 quasi-simultaneous acquisitions of two X-rays and a 3D laser scan of the entire trunk. data was processed to sets of datapoints representing the trunk surface and spinal curve. Functional data analyses were performed using generalized Fourier series using a Haar basis and functional minimum noise fractions. The resulting coefficients became inputs and outputs, respectively, to an array of support vector regression (SVR) machines. SVR parameters were set based on theoretical results, and cross-validation increased confidence in the system's performance. Predicted lateral and frontal views of the spinal curve from the back surface demonstrated average L-2-errors of 6.13 and 4.38 millimetres, respectively, across the test set;these compared favourably with measurement error in data. This constitutes a first robust prediction of the 3D spinal curve from external data using learning techniques.

关键词： scoliosis X-ray imaging laser imaging functional data analysis generalized Fourier series wavelet series functional minimum noise fractions support vector regression learning methods

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A fast learning algorithm of self-organizing map for law text visualization

A fast learning algorithm of self-organizing map for law tex...

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Joint 5th International conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent Systems, SCIS and ISIS 2010

作者： Toyota, Tetsuya Nobuhara, Hajime Department of Intelligent Interaction Technologies University of Tsukuba Tenoudai 1-1-1 Tsukuba Science City Ibaraki 305-8573 Japan

In order to visualize the electronic data of law, a twodimensional map model is proposed. The proposed system firstly performs morphological analysis of each law to generate input vectors, which are composed of extracted keywords from the laws. The proposed efficient Self-Organizing Maps method uses restricted region search and dimensionality reduction by utilizing the specific characteristic of the law data vectors, which have a lot of sparse elements. The obtained map represents the nature of relations of the laws relation nature which would be intuitively understandable to the users. To confirm the effectiveness of the proposed system, evaluation experiments are done by degree of similarity between nearest law using 150 law data from the year 2005 to 2009. The computation time of the proposed method is decreased into 64-98% that of the conventional learning method of SOM, and increase the precision of classification of target law data.

关键词： Self organizing maps

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Classification - The Ubiquitous Challenge: Proceedings of the 28th Annual conference of the Gesellschaft fur Klassifikation e.V., GfKl 2004

Classification - The Ubiquitous Challenge: Proceedings of th...

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28th Annual conference of the German Classification Society (Gesellschaft fur Klassifikation) on Classification: The Ubiquitous Challenge, GfKl 2004

ISBN: (纸本)3540256776

The proceedings contain 82 papers. The topics discussed include: classification and data mining in musicology;Bayesian mixed membership models for soft clustering and classification;predicting protein secondary structure with Markov models;milestones in the history of data visualization: a case study in statistical historiography;quantitative text typology: the impact of word length;cluster ensembles;bootstrap confidence intervals for three-way component methods;organizing the knowledge space for software components;multimedia pattern recognition in soccer video using time intervals;quantitative assessment of the responsibility for the disease load in a population;two-stage classification with automatic feature selection for an industrial application;and empirical comparison of boosting algorithms.

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Validation of 3D motion tracking of pulmonary lesions using CT fluoroscopy images for robotically assisted lung biopsy

Validation of 3D motion tracking of pulmonary lesions using ...

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Medical Imaging 2005 conference

作者： Xu, S Fichtinger, G Taylor, RH Cleary, K Johns Hopkins Univ Engn Res Ctr Baltimore MD 21218 USA

ISBN: (纸本)0819457183

As recently proposed in our previous work, the two-dimensional CT fluoroscopy image series can be used to track the three-dimensional motion of a pulmonary lesion. The assumption is that the lung tissue is locally rigid, so that the realtime CT fluoroscopy image can be combined with a preoperative CT volume to infer the position of the lesion when the lesion is not in the CT fluoroscopy imaging plane. In this paper, we validate the basic properties of our tracking algorithm using a synthetic four-dimensional lung dataset. The motion tracking result is compared to the ground truth of the four-dimensional dataset. The optimal parameter configurations of the algorithm are discussed. The robustness and accuracy of the tracking algorithm are presented. The error analysis shows that the local rigidity error is the principle component of the tracking error. The error increases as the lesion moves away from the image region being registered. Using the synthetic four-dimensional lung data, the average tracking error over a complete respiratory cycle is 0.8 mm for target lesions inside the lung. As a result, the motion tracking algorithm can potentially alleviate the effect of respiratory motion in CT fluoroscopy-guided lung biopsy.

关键词： motion estimation real-time tracking robust tracking data association textured regions lung biopsy robotics

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PBTree - A new progressive and hierarchical representation for network-based navigation in densely built urban environments

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ANNALS OF TELECOMMUNICATIONS 2005年第11-12期60卷 1394-1421页

作者： Royan, J Bouville, C Gioia, P France Telecom R&D F-35510 Cesson Sevigne France

关键词： three dimensional model three dimensional representation urban area hypermedia navigation interactive mode multiresolution analysis visualization client-server architecture

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Algorithm Animation: Using algorithm code to drive an animation

Algorithm Animation: Using algorithm code to drive an animat...

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7th Australasian Computing Education conference, ACE 2005

作者： Morris, John School of Electrical and Electronics Engineering Chung-Ang University Seoul 156-756 Korea Republic of Department of Computer Science The University of Auckland New Zealand

ISBN: (纸本)1920682244

Computer algorithms commonly involve creation, reorganization or destruction of relations between objects. This means that they are generally excellent candidates for visualization for teaching purposes. For a student to comprehend all the ramifications of certain operations, several different concurrent displays are often required: as well as a visualization of the objects being manipulated by the algorithm, commentary, highlighted source code and various statistics are commonly required. This paper describes a strategy for rapidly building animations of algorithms: animations are driven from the source code of the algorithm itself by the addition of animation directives. These directives invoke routines from a toolkit which provides operations commonly needed to display objects and structures. By providing a standard approach to the creation of an animation, creating a new one becomes a straight forward process: many animations in the current collection have been produced by students in one semester courses. The supporting toolkit contains classes which, in addition to animating basic structure, provide many subsidiary displays - histograms, graphs, etc. which are updated as the algorithm runs. This toolkit has evolved following critical analysis of the features needed to allow easy comprehension of the animated algorithms, for example, a separate commentary area has been abandoned in favour of labels on the animation and 'history' panels have been added to permit simultaneous display of several steps in the algorithm. smaller improvements. Over several years, we have implemented a set of widely referenced algorithm animations commonly taught in data structures and algorithms courses available on the web. © 2003, Australian Computer Society, Inc.

关键词： data structures

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