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Displaying 1-30 out of 30 total
Space Transformation for Understanding Group Movement
Found in: IEEE Transactions on Visualization and Computer Graphics
By Natalia Andrienko,Gennady Andrienko,Louise Barrett,Marcus Dostie,Peter Henzi
Issue Date:December 2013
pp. 2169-2178
We suggest a methodology for analyzing movement behaviors of individuals moving in a group. Group movement is analyzed at two levels of granularity: the group as a whole and the individuals it comprises. For analyzing the relative positions and movements o...
 
Composite Density Maps for Multivariate Trajectories
Found in: IEEE Transactions on Visualization and Computer Graphics
By Roeland Scheepens,Niels Willems,Huub van de Wetering,Gennady Andrienko,Natalia Andrienko,Jarke J. van Wijk
Issue Date:December 2011
pp. 2518-2527
We consider moving objects as multivariate time-series. By visually analyzing the attributes, patterns may appear that explain why certain movements have occurred. Density maps as proposed by Scheepens et al. [25] are a way to reveal these patterns by mean...
 
Spatial Generalization and Aggregation of Massive Movement Data
Found in: IEEE Transactions on Visualization and Computer Graphics
By Natalia Andrienko, Gennady Andrienko
Issue Date:February 2011
pp. 205-219
Movement data (trajectories of moving agents) are hard to visualize: numerous intersections and overlapping between trajectories make the display heavily cluttered and illegible. It is necessary to use appropriate data abstraction methods. We suggest a met...
 
Coordinated Multiple Views: a Critical View
Found in: Coordinated and Multiple Views in Exploratory Visualization, International Conference on
By Gennady Andrienko, Natalia Andrienko
Issue Date:July 2007
pp. 72-74
Hundreds of papers have been presented at the five conferences on Coordinated and Multiple Views (CMV) in Exploratory Visualization and related conferences on information visualization and visual analytics [R07]. However, CMV are still rarely implemented i...
 
Visual Exploration of the Spatial Distribution of Temporal Behaviors
Found in: Information Visualisation, International Conference on
By Gennady Andrienko, Natalia Andrienko
Issue Date:July 2005
pp. 799-806
The paper elaborates on the previous research on the analysis of temporal and spatio-temporal data done in statistical graphics and geo-visualization. We focus on the exploration of spatially distributed time-series data, i.e. values of numeric attributes ...
 
Thematic Patterns in Georeferenced Tweets through Space-Time Visual Analytics
Found in: Computing in Science & Engineering
By Gennady Andrienko,Natalia Andrienko,Harald Bosch,Thomas Ertl,Georg Fuchs,Piotr Jankowski,Dennis Thom
Issue Date:May 2013
pp. 72-82
An exploratory study of the potential of georeferenced Twitter data (using tweets from Seattle-area residents over a two-month period) extracts knowledge about people's everyday life.
 
Visual analytics methods for categoric spatio-temporal data
Found in: 2012 IEEE Conference on Visual Analytics Science and Technology (VAST)
By T. von Landesberger,Sebastian Bremm,Natalia Andrienko,Gennady Andrienko,Maria Tekusova
Issue Date:October 2012
pp. 183-192
We focus on visual analysis of space- and time-referenced categorical data, which describe possible states of spatial (geographical) objects or locations and their changes over time. The analysis of these data is difficult as there are only limited possibi...
 
Extracting Events from Spatial Time Series
Found in: Information Visualisation, International Conference on
By Gennady Andrienko, Natalia Andrienko, Martin Mladenov, Michael Mock, Christian Poelitz
Issue Date:July 2010
pp. 48-53
An important task in exploration of data about phenomena and processes that develop over time is detection of significant changes that happened to the studied phenomenon. Our research is focused on supporting detection of significant changes, called events...
 
Event-Based Analysis of People's Activities and Behavior Using Flickr and Panoramio Geotagged Photo Collections
Found in: Information Visualisation, International Conference on
By Slava Kisilevich, Milos Krstajic, Daniel Keim, Natalia Andrienko, Gennady Andrienko
Issue Date:July 2010
pp. 289-296
Photo-sharing websites such as Flickr and Panoramio contain millions of geotagged images contributed by people from all over the world. Characteristics of these data pose new challenges in the domain of spatio-temporal analysis. In this paper, we define se...
 
Uncovering Interaction Patterns in Mobile Outdoor Gaming
Found in: Advanced Geographic Information Systems & Web Services, International Conference on
By Daniel Orellana, Monica Wachowicz, Natalia Andrienko, Gennady Andrienko
Issue Date:February 2009
pp. 177-182
Significant advances in recreation planning have been achieved thanks to the mobile technology and the ubiquitous computation. Today it is possible to know the real time position of a group of individuals participating in an outdoor game, and to obtain a l...
 
Visual Analytics Approach to User-Controlled Evacuation Scheduling
Found in: Symposium On Visual Analytics Science And Technology
By Gennady Andrienko, Natalia Andrienko, Ulrich Bartling
Issue Date:November 2007
pp. 43-50
Application of the ideas of visual analytics is a promising approach to supporting decision making, in particular, where the problems have geographic (or spatial) and temporal aspects. Visual analytics may be especially helpful in time-critical application...
 
Interactive Analysis of Event Data Using Space-Time Cube
Found in: Information Visualisation, International Conference on
By Peter Gatalsky, Natalia Andrienko, Gennady Andrienko
Issue Date:July 2004
pp. 145-152
In exploratory data analysis, the choice of tools depends on the data to be analyzed and the analysis tasks, i.e. the questions to be answered. The same applies to design of new analysis tools. In this paper, we consider a particular type of data: data tha...
 
Parallel Coordinates for Exploring Properties of Subsets
Found in: Coordinated and Multiple Views in Exploratory Visualization, International Conference on
By Gennady Andrienko, Natalia Andrienko
Issue Date:July 2004
pp. 93-104
We describe our modifications of the technique of parallel coordinate plot for supporting visual exploration of object classes, in particular, resulting from cluster analysis. We strived at creating a tool that would be suitable for analysis of large datas...
 
Coordinated Views for Informed Spatial Decision Making
Found in: Coordinated and Multiple Views in Exploratory Visualization, International Conference on
By Natalia Andrienko, Gennady Andrienko
Issue Date:July 2003
pp. 44
There exists a range of computational methods for supporting multi-criteria decision-making. We argue that a combination of these methods with visualisation tools promotes more conscious use of the results of the computations and, hence, contribute to maki...
 
Tools for Visual Comparison of Spatial Development Scenarios
Found in: Information Visualisation, International Conference on
By Natalia Andrienko, Gennady Andrienko, Peter Gatalsky
Issue Date:July 2003
pp. 237
In the paper, we suggest a set of visualization-based exploratory tools to support analysis and comparison of different spatial development scenarios, such as results of simulation of various spatially related processes. We have applied a task-analytical a...
 
Intelligent Visual Data Analysis Service in the Internet
Found in: Web Information Systems Engineering, International Conference on
By Andrienko Natalia, Andrienko Gennady
Issue Date:December 2001
pp. 0085
Descartes is a knowledge-based system supporting exploratory analysis of spatially referenced data with the use of maps. It is capable of automated generation of maps and other graphical displays that represent data selected for analysis. Besides, the syst...
 
SimpliFly: A Methodology for Simplification and Thematic Enhancement of Trajectories
Found in: IEEE Transactions on Visualization and Computer Graphics
By Katerina Vrotsou,Halldor Janetzko,Carlo Navarra,Georg Fuchs,David Spretke,Florian Mansmann,Natalia Andrienko,Gennady Andrienko
Issue Date:July 2014
pp. 1
Movement datasets collected using today’s advanced tracking devices consist of complex trajectories in terms of length, shape, and number of recorded positions. Multiple additional attributes characterizing the movement and its environment are often also i...
 
Space Transformation for Understanding Group Movement
Found in: IEEE Transactions on Visualization and Computer Graphics
By Natalia Andrienko,Gennady Andrienko,Louise Barrett,Marcus Dostie,Peter Henzi
Issue Date:December 2013
pp. 2169-2178
We suggest a methodology for analyzing movement behaviors of individuals moving in a group. Group movement is analyzed at two levels of granularity: the group as a whole and the individuals it comprises. For analyzing the relative positions and movements o...
 
Semantic trajectories modeling and analysis
Found in: ACM Computing Surveys (CSUR)
By Aris Gkoulalas-Divanis, Chiara Renso, Christine Parent, Gennady Andrienko, Jose Macedo, Maria Luisa Damiani, Natalia Andrienko, Nikos Pelekis, Stefano Spaccapietra, Vania Bogorny, Yannis Theodoridis, Zhixian Yan
Issue Date:August 2013
pp. 1-32
Focus on movement data has increased as a consequence of the larger availability of such data due to current GPS, GSM, RFID, and sensors techniques. In parallel, interest in movement has shifted from raw movement data analysis to more application-oriented ...
     
Exploring spatiotemporal patterns by integrating visual analytics with a moving objects database system
Found in: Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (GIS '11)
By Christophe Hurter, Gennady Andrienko, Mahmoud Sakr, Natalia Andrienko, Ralf Hartmut Guting, Thomas Behr
Issue Date:November 2011
pp. 505-508
In previous work, we have proposed a tool for Spatiotemporal Pattern Query. It matches individual moving object trajectories against a given movement pattern. For example, it can be used to find the situations of Missed Approach in ATC data (Air Traffic Co...
     
Analytical workflow of monitoring human mobility in big event settings using Bluetooth
Found in: Proceedings of the 3rd ACM SIGSPATIAL International Workshop on Indoor Spatial Awareness (ISA '11)
By Dirk Hecker, Gennady Andrienko, Hendrik Stange, Natalia Andrienko, Thomas Liebig
Issue Date:November 2011
pp. 51-58
In recent times, consumer research at major social events received significant interest by organizing companies. Understanding the movements and motivations of the customers enables new business strategies and is needed to minimize the risk of investment. ...
     
Movement data anonymity through generalization
Found in: Proceedings of the 2nd SIGSPATIAL ACM GIS 2009 International Workshop on Security and Privacy in GIS and LBS (SPRINGL '09)
By Anna Monreale, Dino Pedreschi, Fosca Giannotti, Gennady Andrienko, Natalia Andrienko
Issue Date:November 2009
pp. 27-31
In recent years, spatio-temporal and moving objects databases have gained considerable interest, due to the diffusion of mobile devices (e.g., mobile phones, RFID devices and GPS devices) and of new applications, where the discovery of consumable, concise,...
     
Analysis of community-contributed space-and time-referenced data (example of Panoramio photos)
Found in: Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (GIS '09)
By Daniel Keim, Gennady Andrienko, Natalia Andrienko, Peter Bak, Slava Kisilevich
Issue Date:November 2009
pp. 540-541
Space- and time-referenced data published on the Web by general people can be viewed in a dual way: as independent spatio-temporal events and as trajectories of people in the geographical space. These two views suppose different approaches to the analysis,...
     
Interactive spatio-temporal cluster analysis of VAST challenge 2008 datasets
Found in: Proceedings of the ACM SIGKDD Workshop on Visual Analytics and Knowledge Discovery: Integrating Automated Analysis with Interactive Exploration (KDD '09)
By Gennady Andrienko, Natalia Andrienko
Issue Date:July 2009
pp. 5-11
We describe a visual analytics method supporting the analysis of two different types of spatio-temporal data, point events and trajectories of moving agents. The method combines clustering with interactive visual displays, in particular, map and space-time...
     
Supporting visual exploration of massive movement data
Found in: Proceedings of the working conference on Advanced visual interfaces (AVI '08)
By Gennady Andrienko, Natalia Andrienko
Issue Date:May 2008
pp. 1-29
To make sense from large amounts of movement data (sequences of positions of moving objects), a human analyst needs interactive visual displays enhanced with database operations and methods of computational analysis. We present a toolkit for analysis of mo...
     
Interactive visual interfaces for evacuation planning
Found in: Proceedings of the working conference on Advanced visual interfaces (AVI '08)
By Gennady Andrienko, Natalia Andrienko, Ulrich Bartling
Issue Date:May 2008
pp. 1-29
To support planning of massive transportations under time-critical conditions, in particular, evacuation of people from a disaster-affected area, we have developed a software module for automated generation of transportation schedules and a suite of visual...
     
Intelligent support of visual data analysis in Descartes
Found in: Proceedings of the 2nd international symposium on Smart graphics (SMARTGRAPH '02)
By Gennady Andrienko, Natalia Andrienko
Issue Date:June 2002
pp. 21-26
Descartes is a knowledge-based system supporting exploratory analysis of spatially referenced data with the use of maps. It is capable of automated generation of maps and other graphical displays that represent data selected for analysis. Besides, the syst...
     
Supporting visual exploration of object movement
Found in: Proceedings of the Working Conference on Advanced Visual Interfaces (AVI '00)
By Gennady Andrienko, Natalia Andrienko, Peter Gatalsky
Issue Date:May 2000
pp. 217-220
The focus of the presented work is visualization of routes of objects that change their spatial location in time. The challenge is to facilitate investigation of important characteristics of the movement: positions of the objects at any selected moment, di...
     
Knowledge engineering for automated map design in DESCARTES
Found in: Proceedings of the seventh ACM international symposium on Advances in geographic information systems (GIS '99)
By Gennady Andrienko, Natalia Andrienko
Issue Date:November 1999
pp. 66-72
The low operating speed of current CMOS Field Programmable Gate Arrays (FPGAs), i.e., 10-220 MHz, has prevented their use in high-speed digital applications. With the advent of IBM Silicon Germanium (SiGe) 7HP technology, designers have been able to design...
     
Where traffic meets DNA: mobility mining using biological sequence analysis revisited
Found in: Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (GIS '11)
By Ahmed Jawad, Kristian Kersting, Natalia Andrienko
Issue Date:November 2011
pp. 357-360
Traffic and mobility mining are fascinating and fast growing areas of data mining and geographical information systems that impact the lives of billions of people every day. Another well-known scientific field that impacts lives of billions is biological s...
     
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