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EuroVis
2,013
Towards High-dimensional Data Analysis in Air Quality Research
10.1111/cgf.12097
Analysis of chemical constituents from mass spectrometry of aerosols involves non‐negative matrix factorization, an approximation of high‐dimensional data in lower‐dimensional space. The associated optimization problem is non‐convex, resulting in crude approximation errors that are not accessible to scientists. To addr...
false
false
[ "Daniel Engel", "Mathias Hummel", "F. Hoepel", "Keith Bein", "Anthony S. Wexler", "Christoph Garth", "Bernd Hamann", "Hans Hagen" ]
[]
[]
[]
EuroVis
2,013
Towards Multifield Scalar Topology Based on Pareto Optimality
10.1111/cgf.12121
How can the notion of topological structures for single scalar fields be extended to multifields? In this paper we propose a definition for such structures using the concepts of Pareto optimality and Pareto dominance. Given a set of piecewise‐linear, scalar functions over a common simplical complex of any dimension, ou...
false
false
[ "Lars Huettenberger", "Christian Heine 0002", "Hamish A. Carr", "Gerik Scheuermann", "Christoph Garth" ]
[]
[]
[]
EuroVis
2,013
TrajectoryLenses - A Set-based Filtering and Exploration Technique for Long-term Trajectory Data
10.1111/cgf.12132
The visual analysis of spatiotemporal movement is a challenging task. There may be millions of routes of different length and shape with different origin and destination, extending over a long time span. Furthermore there can be various correlated attributes depending on the data domain, e.g. engine measurements for mo...
false
false
[ "Robert Krüger", "Dennis Thom", "Michael Wörner 0001", "Harald Bosch", "Thomas Ertl" ]
[]
[]
[]
EuroVis
2,013
User-driven Feature Space Transformation
10.1111/cgf.12116
Interactive visualization systems for exploring and manipulating high‐dimensional feature spaces have experienced a substantial progress in the last few years. State‐of‐art methods rely on solid mathematical and computational foundations that enable sophisticated and flexible interactive tools. Current methods are even...
false
false
[ "Gladys M. H. Mamani", "Francisco M. Fatore", "Luis Gustavo Nonato", "Fernando Vieira Paulovich" ]
[]
[]
[]
EuroVis
2,013
Vector Field k-Means: Clustering Trajectories by Fitting Multiple Vector Fields
10.1111/cgf.12107
Scientists study trajectory data to understand trends in movement patterns, such as human mobility for traffic analysis and urban planning. In this paper, we introduce a novel trajectory clustering technique whose central idea is to use vector fields to induce a notion of similarity between trajectories, letting the ve...
false
false
[ "Nivan Ferreira", "James T. Klosowski", "Carlos Eduardo Scheidegger", "Cláudio T. Silva" ]
[ "HM" ]
[ "P" ]
[ { "name": "Paper Preprint", "url": "http://arxiv.org/pdf/1208.5801v2", "icon": "paper" } ]
EuroVis
2,013
Vessel Visualization using Curvicircular Feature Aggregation
10.1111/cgf.12110
Radiological investigations are common medical practice for the diagnosis of peripheral vascular diseases. Existing visualization methods such as Curved Planar Reformation (CPR) depict calcifications on vessel walls to determine if blood is still able to flow. While it is possible with conventional CPR methods to exami...
false
false
[ "Gabriel Mistelbauer", "Anca Morar", "Andrej Varchola", "Rüdiger Schernthaner", "Ivan Baclija", "Arnold Köchl", "Armin Kanitsar", "Stefan Bruckner", "M. Eduard Gröller" ]
[]
[]
[]
EuroVis
2,013
VisRuption: Intuitive and Efficient Visualization of Temporal Airline Disruption Data
10.1111/cgf.12095
The operation of an airline is a very complex task and disruptions to the planned operation can occur on very short notice. Already a small disruption like a delay of some minutes can cost the airline a tremendous amount of money. Hence, it is crucial to proactively control all operations of the airline and efficiently...
false
false
[ "Paul Rosenthal", "Linda Pfeiffer", "Nicholas Hugo Müller", "Peter Ohler" ]
[]
[]
[]
EuroVis
2,013
Visual Analysis of Set Relations in a Graph
10.1111/cgf.12093
Many applications can be modeled as a graph with additional attributes attached to the nodes. For example, a graph can be used to model the relationship of people in a social media website or a bibliographical dataset. Meanwhile, additional information is often available, such as the topics people are interested in and...
false
false
[ "Panpan Xu", "Fan Du", "Nan Cao", "Conglei Shi", "Hong Zhou 0004", "Huamin Qu" ]
[]
[]
[]
EuroVis
2,013
Visual Explanation of the Complexity in Julia Sets
10.1111/cgf.12130
Julia sets based on quadratic polynomials have a very simple definition, yet a highly intricate shape. Our contribution is to provide a visual explanation for this complexity. To this end we show the construction of Julia sets as a dynamic process, in contrast to showing just a static image of the set itself. Our metho...
false
false
[ "Okke Schrijvers", "Jarke J. van Wijk" ]
[]
[]
[]
EuroVis
2,013
Visualizing Interchange Patterns in Massive Movement Data
10.1111/cgf.12114
Massive amount of movement data, such as daily trips made by millions of passengers in a city, are widely available nowadays. They are a highly valuable means not only for unveiling human mobility patterns, but also for assisting transportation planning, in particular for metropolises around the world. In this paper, w...
false
false
[ "Wei Zeng 0004", "Chi-Wing Fu", "Stefan Müller Arisona", "Huamin Qu" ]
[]
[]
[]
EuroVis
2,013
Visualizing Large-scale Parallel Communication Traces Using a Particle Animation Technique
10.1111/cgf.12101
Large‐scale scientific simulations require execution on parallel computing systems in order to yield useful results in a reasonable time frame. But parallel execution adds communication overhead. The impact that this overhead has on performance may be difficult to gauge, as parallel application behaviors are typically ...
false
false
[ "Carmen Sigovan", "Chris Muelder", "Kwan-Liu Ma" ]
[]
[]
[]
EuroVis
2,013
Visualizing Motional Correlations in Molecular Dynamics using Geometric Deformations
10.1111/cgf.12118
In macromolecules, an allosteric effect is said to occur when a change at one site of a molecule affects a distant site. Understanding these allosteric effects can be important for understanding how the functions of complex molecules such as proteins are regulated. One potential application of this knowledge is the dev...
false
false
[ "Matthew Fioravante", "Adam Shook", "Ian Thorpe", "Penny Rheingans" ]
[]
[]
[]
EuroVis
2,013
Visualizing Robustness of Critical Points for 2D Time-Varying Vector Fields
10.1111/cgf.12109
Analyzing critical points and their temporal evolutions plays a crucial role in understanding the behavior of vector fields. A key challenge is to quantify the stability of critical points: more stable points may represent more important phenomena or vice versa. The topological notion of robustness is a tool which allo...
false
false
[ "Bei Wang 0001", "Paul Rosen 0001", "Primoz Skraba", "Harsh Bhatia", "Valerio Pascucci" ]
[]
[]
[]
EuroVis
2,013
ViviSection: Skeleton-based Volume Editing
10.1111/cgf.12133
Volume segmentation is important in many applications, particularly in the medical domain. Most segmentation techniques, however, work fully automatically only in very restricted scenarios and cumbersome manual editing of the results is a common task. In this paper, we introduce a novel approach for the editing of segm...
false
false
[ "Alexey Karimov", "Gabriel Mistelbauer", "Johanna Schmidt", "Peter Mindek", "Elisabeth Schmidt", "Timur Sharipov", "Stefan Bruckner", "M. Eduard Gröller" ]
[]
[]
[]
CHI
2,013
Binocular cursor: enabling selection on transparent displays troubled by binocular parallax
10.1145/2470654.2466433
Binocular parallax is a problem for any interaction system that has a transparent display and objects behind it, as users will see duplicated and overlapped images. In this note, we propose a quantitative measure called Binocular Selectability Discriminant (BSD) to predict the ability of the user to perform selection t...
false
false
[ "Joon Hyub Lee", "Seok-Hyung Bae" ]
[]
[]
[]
CHI
2,013
Canyon: providing location awareness of multiple moving objects in a detail view on large displays
10.1145/2470654.2466431
Overview+Detail interfaces can be used to examine the details of complex data while retaining the data's overall context. Dynamic data introduce challenges for these interfaces, however, as moving objects may exit the detail view, as well as a person's field of view if they are working at a large interactive surface. T...
false
false
[ "Alexandra Ion", "Yu-Ling Betty Chang", "Michael Haller", "Mark S. Hancock", "Stacey D. Scott" ]
[]
[]
[]
CHI
2,013
Contextifier: automatic generation of annotated stock visualizations
10.1145/2470654.2481374
Online news tools - for aggregation, summarization and automatic generation - are an area of fruitful development as reading news online becomes increasingly commonplace. While textual tools have dominated these developments, annotated information visualizations are a promising way to complement articles based on their...
false
false
[ "Jessica Hullman", "Nicholas Diakopoulos", "Eytan Adar" ]
[]
[]
[]
CHI
2,013
Direct manipulation video navigation in 3D
10.1145/2470654.2466150
Direct Manipulation Video Navigation (DMVN) systems allow a user to navigate a video by dragging an object along its motion trajectory. These systems have been shown effective for space-centric video browsing. Their performance, however, is often limited by temporal ambiguities in a video with complex motion, such as r...
false
false
[ "Cuong Nguyen 0003", "Yuzhen Niu", "Feng Liu 0015" ]
[]
[]
[]
CHI
2,013
Effects of visualization and note-taking on sensemaking and analysis
10.1145/2470654.2481376
Many sophisticated tools have been developed to help analysts detect patterns in large datasets, but the value of these tools' individual features is rarely tested. In an experiment in which participants played detectives solving homicides, we tested the utility of a visualization of data links and a notepad for collec...
false
false
[ "Nitesh Goyal", "Gilly Leshed", "Susan R. Fussell" ]
[]
[]
[]
CHI
2,013
Evaluating the efficiency of physical visualizations
10.1145/2470654.2481359
Data sculptures are an increasingly popular form of physical visualization whose purposes are essentially artistic, communicative or educational. But can physical visualizations help carry out actual information visualization tasks? We present the first infovis study comparing physical to on-screen visualizations. We f...
false
false
[ "Yvonne Jansen", "Pierre Dragicevic", "Jean-Daniel Fekete" ]
[]
[]
[]
CHI
2,013
Evaluation of alternative glyph designs for time series data in a small multiple setting
10.1145/2470654.2466443
We present the results of a controlled experiment to investigate the performance of different temporal glyph designs in a small multiple setting. Analyzing many time series at once is a common yet difficult task in many domains, for example in network monitoring. Several visualization techniques have, thus, been propos...
false
false
[ "Johannes Fuchs 0001", "Fabian Fischer 0001", "Florian Mansmann", "Enrico Bertini", "Petra Isenberg" ]
[]
[]
[]
CHI
2,013
Exploring & designing tools to enhance falls rehabilitation in the home
10.1145/2470654.2466159
Falls are the leading cause of accidental injury-related deaths in the elderly; a fall can lead to a loss of independence, and a fear of falling. Rehabilitation programmes involving exercise have proved the most successful way to reduce the risk of falls. However, the limitations of standard care (e.g. booklets) could ...
false
false
[ "Stephen Uzor", "Lynne Baillie" ]
[]
[]
[]
CHI
2,013
HeartLink: open broadcast of live biometric data to social networks
10.1145/2470654.2466231
A number of studies in the literature have looked into the use of real-time biometric data to improve one's own physiological performance and wellbeing. However, there is limited research that looks into the effects that sharing biometric data with others could have on one's social network. Following a period of resear...
false
false
[ "Franco Curmi", "Maria Angela Ferrario", "Jen Southern", "Jon Whittle 0001" ]
[]
[]
[]
CHI
2,013
IllumiRoom: peripheral projected illusions for interactive experiences
10.1145/2470654.2466112
IllumiRoom is a proof-of-concept system that augments the area surrounding a television with projected visualizations to enhance traditional gaming experiences. We investigate how projected visualizations in the periphery can negate, include, or augment the existing physical environment and complement the content displ...
false
false
[ "Brett R. Jones", "Hrvoje Benko", "Eyal Ofek", "Andrew D. Wilson" ]
[]
[]
[]
CHI
2,013
inAir: a longitudinal study of indoor air quality measurements and visualizations
10.1145/2470654.2481380
Indoor air quality (IAQ) is important for health as people spend the majority of time indoors, and it is particularly interesting over outdoor air because it strongly ties to indoor activities. Some activities easily exacerbate IAQ, resulting in serious pollution. However, people may not notice such changes because man...
false
false
[ "Sunyoung Kim", "Eric Paulos", "Jennifer Mankoff" ]
[]
[]
[]
CHI
2,013
Individual user characteristics and information visualization: connecting the dots through eye tracking
10.1145/2470654.2470696
There is increasing evidence that users' characteristics such as cognitive abilities and personality have an impact on the effectiveness of information visualization techniques. This paper investigates the relationship between such characteristics and fine-grained user attention patterns. In particular, we present resu...
false
false
[ "Dereck Toker", "Cristina Conati", "Ben Steichen", "Giuseppe Carenini" ]
[]
[]
[]
CHI
2,013
Influencing visual judgment through affective priming
10.1145/2470654.2481410
Recent research suggests that individual personality differences can influence performance with visualizations. In addition to stable personality traits, research in psychology has found that temporary changes in affect (emotion) can also significantly impact performance during cognitive tasks. In this paper, we show t...
false
false
[ "Lane Harrison", "Drew Skau", "Steven Franconeri", "Aidong Lu", "Remco Chang" ]
[]
[]
[]
CHI
2,013
Interactive horizon graphs: improving the compact visualization of multiple time series
10.1145/2470654.2466441
Many approaches have been proposed for the visualization of multiple time series. Two prominent approaches are reduced line charts (RLC), which display small multiples for time series, and the more recent horizon graphs (HG). We propose to unify RLC and HG using a new technique - interactive horizon graphs (IHG) - whic...
false
false
[ "Charles Perin", "Frédéric Vernier", "Jean-Daniel Fekete" ]
[]
[]
[]
CHI
2,013
Motif simplification: improving network visualization readability with fan, connector, and clique glyphs
10.1145/2470654.2466444
Analyzing networks involves understanding the complex relationships between entities, as well as any attributes they may have. The widely used node-link diagrams excel at this task, but many are difficult to extract meaning from because of the inherent complexity of the relationships and limited screen space. To help a...
false
false
[ "Cody Dunne", "Ben Shneiderman" ]
[]
[]
[]
CHI
2,013
Patina: dynamic heatmaps for visualizing application usage
10.1145/2470654.2466442
We present Patina, an application independent system for collecting and visualizing software application usage data. Patina requires no instrumentation of the target application, all data is collected through standard window metrics and accessibility APIs. The primary visualization is a dynamic heatmap overlay which ad...
false
false
[ "Justin Matejka", "Tovi Grossman", "George W. Fitzmaurice" ]
[]
[]
[]
CHI
2,013
Pt Viz: towards a wearable device for visualizing knee rehabilitation exercises
10.1145/2470654.2466161
We present a wearable sensory display for visualizing knee rehabilitation as part of an in-home physical therapy program. Currently, patients undergoing knee rehabilitation have limited ways of assessing exercise form and extent of movement at home. To address this issue, we developed an exploratory wearable electronic...
false
false
[ "Swamy Ananthanarayan", "Miranda Sheh", "Alice Chien", "Halley Profita", "Katie A. Siek" ]
[]
[]
[]
CHI
2,013
Quantity estimation in visualizations of tagged text
10.1145/2470654.2481373
A valuable task in text visualization is to have viewers make judgments about text that has been annotated (either by hand or by some algorithm such as text clustering or entity extraction). In this work we look at the ability of viewers to make judgments about the relative quantities of tags in annotated text (specifi...
false
false
[ "Michael Correll", "Eric C. Alexander", "Michael Gleicher" ]
[]
[]
[]
CHI
2,013
Reveal-it!: the impact of a social visualization projection on public awareness and discourse
10.1145/2470654.2466476
Public displays and projections are becoming increasingly available in various informal urban settings. However, their potential impact on informing and engaging citizens on relevant issues has still been largely unexplored. In this paper, we show that visualizations displayed in public settings are able to increase so...
false
false
[ "Nina Valkanova", "Sergi Jordà", "Martin Tomitsch", "Andrew Vande Moere" ]
[]
[]
[]
CHI
2,013
SpaceTop: integrating 2D and spatial 3D interactions in a see-through desktop environment
10.1145/2470654.2470680
SpaceTop is a concept that fuses spatial 2D and 3D interactions in a single workspace. It extends the traditional desktop interface with interaction technology and visualization techniques that enable seamless transitions between 2D and 3D manipulations. SpaceTop allows users to type, click, draw in 2D, and directly ma...
false
false
[ "Jinha Lee", "Alex Olwal", "Hiroshi Ishii 0001", "Cati N. Boulanger" ]
[]
[]
[]
CHI
2,013
Talking about tactile experiences
10.1145/2470654.2466220
A common problem with designing and developing applications with tactile interfaces is the lack of a vocabulary that allows one to describe or communicate about haptics. Here we present the findings from a study exploring participants' verbalizations of their tactile experiences across two modulated tactile stimuli (16...
false
false
[ "Marianna Obrist", "Sue Ann Seah", "Sriram Subramanian" ]
[]
[]
[]
CHI
2,013
The dubuque electricity portal: evaluation of a city-scale residential electricity consumption feedback system
10.1145/2470654.2466155
This paper describes the Dubuque Electricity Portal, a city-scale system aimed at supporting voluntary reductions of electricity consumption. The Portal provided each household with fine-grained feedback on its electricity use, as well as using incentives, comparisons, and goal setting to encourage conservation. Logs, ...
false
false
[ "Thomas Erickson", "Ming Li 0009", "Younghun Kim", "Ajay Deshpande", "Sambit Sahu", "Tian Chao", "Piyawadee Sukaviriya", "Milind R. Naphade" ]
[]
[]
[]
CHI
2,013
The efficacy of human post-editing for language translation
10.1145/2470654.2470718
Language translation is slow and expensive, so various forms of machine assistance have been devised. Automatic machine translation systems process text quickly and cheaply, but with quality far below that of skilled human translators. To bridge this quality gap, the translation industry has investigated post-editing, ...
false
false
[ "Spence Green", "Jeffrey Heer", "Christopher D. Manning" ]
[]
[]
[]
CHI
2,013
TouchViz: a case study comparing two interfaces for data analytics on tablets
10.1145/2470654.2481318
As more applications move from the desktop to touch devices like tablets, designers must wrestle with the costs of porting a design with as little revision of the UI as possible from one device to the other, or of optimizing the interaction per device. We consider the tradeoffs between two versions of a UI for working ...
false
false
[ "Steven Mark Drucker", "Danyel Fisher", "Ramik Sadana", "Jessica Herron", "m. c. schraefel" ]
[]
[]
[]
CHI
2,013
Using fNIRS brain sensing to evaluate information visualization interfaces
10.1145/2470654.2470723
We show how brain sensing can lend insight to the evaluation of visual interfaces and establish a role for fNIRS in visualization. Research suggests that the evaluation of visual design benefits by going beyond performance measures or questionnaires to measurements of the user's cognitive state. Unfortunately, objectiv...
false
false
[ "Evan M. Peck", "Beste F. Yuksel", "Alvitta Ottley", "Robert J. K. Jacob", "Remco Chang" ]
[]
[]
[]
CHI
2,013
Weighted graph comparison techniques for brain connectivity analysis
10.1145/2470654.2470724
The analysis of brain connectivity is a vast field in neuroscience with a frequent use of visual representations and an increasing need for visual analysis tools. Based on an in-depth literature review and interviews with neuroscientists, we explore high-level brain connectivity analysis tasks that need to be supported...
false
false
[ "Basak Alper", "Benjamin Bach", "Nathalie Henry Riche", "Tobias Isenberg 0001", "Jean-Daniel Fekete" ]
[]
[]
[]
VAST
2,012
A case study: Tracking and visualizing the evolution of dark matter halos and groups of satellite halos in cosmology simulations
10.1109/VAST.2012.6400532
In this poster, we track the evolution of cosmic structures and higher level host structures in cosmological simulation as they interact with each other. The structures found in these simulations are made up of groups of dark matter tracer particles called satellite halos and groups of satellite halos called host halos...
false
false
[ "Jay Takle", "Deborah Silver", "Katrin Heitmann" ]
[]
[]
[]
VAST
2,012
A correlative analysis process in a visual analytics environment
10.1109/VAST.2012.6400491
Finding patterns and trends in spatial and temporal datasets has been a long studied problem in statistics and different domains of science. This paper presents a visual analytics approach for the interactive exploration and analysis of spatiotemporal correlations among multivariate datasets. Our approach enables users...
false
false
[ "Abish Malik", "Ross Maciejewski", "Niklas Elmqvist", "Yun Jang", "David S. Ebert", "Whitney Huang" ]
[]
[]
[]
VAST
2,012
A generic model for the integration of interactive visualization and statistical computing using R
10.1109/VAST.2012.6400537
This poster describes general concepts of integrating the statistical computation package R into a coordinated multiple views framework. The integration is based on a cyclic analysis workflow. In this model, interactive selections are a key aspect to trigger and control computations in R. Dynamic updates of data column...
false
false
[ "Johannes Kehrer", "Roland N. Boubela", "Peter Filzmoser", "Harald Piringer" ]
[]
[]
[]
VAST
2,012
A Visual Analytics Approach to Multiscale Exploration of Environmental Time Series
10.1109/TVCG.2012.191
We present a Visual Analytics approach that addresses the detection of interesting patterns in numerical time series, specifically from environmental sciences. Crucial for the detection of interesting temporal patterns are the time scale and the starting points one is looking at. Our approach makes no assumption about ...
false
false
[ "Mike Sips", "Patrick Köthur", "Andrea Unger", "Hans-Christian Hege", "Doris Dransch" ]
[]
[]
[]
VAST
2,012
A visual analytics approach to understanding cycling behaviour
10.1109/VAST.2012.6400550
Existing research into cycling behaviours has either relied on detailed ethnographic studies or larger public attitude surveys [1] [9]. Instead, following recent contributions from information visualization [13] and data mining [5] [7], this design study uses visual analytics techniques to identify, describe and explai...
false
false
[ "Roger Beecham", "Jo Wood", "Audrey Bowerman" ]
[]
[]
[]
VAST
2,012
AlVis: Situation awareness in the surveillance of road tunnels
10.1109/VAST.2012.6400556
In the surveillance of road tunnels, video data plays an important role for a detailed inspection and as an input to systems for an automated detection of incidents. In disaster scenarios like major accidents, however, the increased amount of detected incidents may lead to situations where human operators lose a sense ...
false
false
[ "Harald Piringer", "Matthias Buchetics", "Rudolf Benedik" ]
[]
[]
[]
VAST
2,012
An adaptive parameter space-filling algorithm for highly interactive cluster exploration
10.1109/VAST.2012.6400493
For a user to perceive continuous interactive response time in a visualization tool, the rule of thumb is that it must process, deliver, and display rendered results for any given interaction in under 100 milliseconds. In many visualization systems, successive interactions trigger independent queries and caching of res...
false
false
[ "Zafar Ahmed", "Chris E. Weaver" ]
[]
[]
[]
VAST
2,012
An Affordance-Based Framework for Human Computation and Human-Computer Collaboration
10.1109/TVCG.2012.195
Visual Analytics is “the science of analytical reasoning facilitated by visual interactive interfaces” [70]. The goal of this field is to develop tools and methodologies for approaching problems whose size and complexity render them intractable without the close coupling of both human and machine analysis. Researchers ...
false
false
[ "R. Jordan Crouser", "Remco Chang" ]
[]
[]
[]
VAST
2,012
Analyst's Workspace: An embodied sensemaking environment for large, high-resolution displays
10.1109/VAST.2012.6400559
Distributed cognition and embodiment provide compelling models for how humans think and interact with the environment. Our examination of the use of large, high-resolution displays from an embodied perspective has lead directly to the development of a new sensemaking environment called Analyst's Workspace (AW). AW leve...
false
false
[ "Christopher Andrews", "Chris North 0001" ]
[]
[]
[]
VAST
2,012
Augmenting visual representation of affectively charged information using sound graphs
10.1109/VAST.2012.6400547
Within the Visual Analytics research agenda there is an interest on studying the applicability of multimodal information representation and interaction techniques for the analytical reasoning process. The present study summarizes a pilot experiment conducted to understand the effects of augmenting visualizations of aff...
false
false
[ "Nadya A. Calderón", "Bernhard E. Riecke", "Brian D. Fisher" ]
[]
[]
[]
VAST
2,012
Dis-function: Learning distance functions interactively
10.1109/VAST.2012.6400486
The world's corpora of data grow in size and complexity every day, making it increasingly difficult for experts to make sense out of their data. Although machine learning offers algorithms for finding patterns in data automatically, they often require algorithm-specific parameters, such as an appropriate distance funct...
false
false
[ "Eli T. Brown", "Jingjing Liu", "Carla E. Brodley", "Remco Chang" ]
[]
[]
[]
VAST
2,012
Enterprise Data Analysis and Visualization: An Interview Study
10.1109/TVCG.2012.219
Organizations rely on data analysts to model customer engagement, streamline operations, improve production, inform business decisions, and combat fraud. Though numerous analysis and visualization tools have been built to improve the scale and efficiency at which analysts can work, there has been little research on how...
false
false
[ "Sean Kandel", "Andreas Paepcke", "Joseph M. Hellerstein", "Jeffrey Heer" ]
[ "HM" ]
[]
[]
VAST
2,012
Examining the Use of a Visual Analytics System for Sensemaking Tasks: Case Studies with Domain Experts
10.1109/TVCG.2012.224
While the formal evaluation of systems in visual analytics is still relatively uncommon, particularly rare are case studies of prolonged system use by domain analysts working with their own data. Conducting case studies can be challenging, but it can be a particularly effective way to examine whether visual analytics s...
false
false
[ "Youn ah Kang", "John T. Stasko" ]
[]
[]
[]
VAST
2,012
Exploring cyber physical data streams using Radial Pixel Visualizations
10.1109/VAST.2012.6400541
Cyber physical systems (CPS), such as smart buildings and data centers, are richly instrumented systems composed of tightly coupled computational and physical elements that generate large amounts of data. To explore CPS data and obtain actionable insights, we construct a Radial Pixel Visualization (RPV) system, which u...
false
false
[ "Ming C. Hao", "Manish Marwah", "Sebastian Mittelstädt", "Halldór Janetzko", "Daniel A. Keim", "Umeshwar Dayal", "Cullen E. Bash", "Carlos J. Felix", "Chandrakant D. Patel", "Meichun Hsu", "Yuan Chen 0001" ]
[]
[]
[]
VAST
2,012
Exploring the impact of emotion on visual judgement
10.1109/VAST.2012.6400540
Existing research suggests that individual personality differences can influence performance with visualizations. In addition to stable traits such as locus of control, research in psychology has found that temporary changes in affect (emotion) can significantly impact individual performance on cognitive tasks. We exam...
false
false
[ "Lane Harrison", "Remco Chang", "Aidong Lu" ]
[]
[]
[]
VAST
2,012
Feature-similarity visualization of MRI cortical surface data
10.1109/VAST.2012.6400548
We present an analytics-based framework for simultaneous visualization of large surface data collections arising in clinical neuroimaging studies. Termed Informatics Visualization for Neuroimaging (INVIZIAN), this framework allows the visualization of both cortical surfaces characteristics and feature relatedness in un...
false
false
[ "Ian Bowman", "Shantanu H. Joshi", "Vaughan Greer", "John D. Van Horn" ]
[]
[]
[]
VAST
2,012
iLAMP: Exploring high-dimensional spacing through backward multidimensional projection
10.1109/VAST.2012.6400489
Ever improving computing power and technological advances are greatly augmenting data collection and scientific observation. This has directly contributed to increased data complexity and dimensionality, motivating research of exploration techniques for multidimensional data. Consequently, a recent influx of work dedic...
false
false
[ "Elisa Portes dos Santos", "Emilio Vital Brazil", "Joel Daniels II", "Paulo Joia", "Luis Gustavo Nonato", "Mario Costa Sousa" ]
[]
[]
[]
VAST
2,012
Incorporating GOMS analysis into the design of an EEG data visual analysis tool
10.1109/VAST.2012.6400542
In this paper, we present a case study where we incorporate GOMS (Goals, Operators, Methods, and Selectors) [2] task analysis into the design process of a visual analysis tool. We performed GOMS analysis on an Electroencephalography (EEG) analyst's current data analysis strategy to identify important user tasks and unn...
false
false
[ "Hua Guo", "Diem Tran", "David H. Laidlaw" ]
[]
[]
[]
VAST
2,012
Infographics at the Congressional Budget Office
10.1109/VAST.2012.6400533
The Congressional Budget Office (CBO) is an agency of the federal government with about 240 employees that provides the U.S. Congress with timely, nonpartisan analysis of important budgetary and economic issues. Recently, CBO began producing static infographics to present its headline stories and to provide information...
false
false
[ "Jonathan A. Schwabish" ]
[]
[]
[]
VAST
2,012
Information retrieval failure analysis: Visual analytics as a support for interactive "what-if" investigation
10.1109/VAST.2012.6400551
This poster provides an analytical model for examining performances of IR systems, based on the discounted cumulative gain family of metrics, and visualization for interacting and exploring the performances of the system under examination. Moreover, we propose machine learning approach to learn the ranking model of the...
false
false
[ "Marco Angelini", "Nicola Ferro 0001", "Guido Granato", "Giuseppe Santucci", "Gianmaria Silvello" ]
[]
[]
[]
VAST
2,012
Inter-active learning of ad-hoc classifiers for video visual analytics
10.1109/VAST.2012.6400492
Learning of classifiers to be used as filters within the analytical reasoning process leads to new and aggravates existing challenges. Such classifiers are typically trained ad-hoc, with tight time constraints that affect the amount and the quality of annotation data and, thus, also the users' trust in the classifier t...
false
false
[ "Benjamin Höferlin", "Rudolf Netzel", "Markus Höferlin", "Daniel Weiskopf", "Gunther Heidemann" ]
[]
[]
[]
VAST
2,012
Just-in-time annotation of clusters, outliers, and trends in point-based data visualizations
10.1109/VAST.2012.6400487
We introduce the concept of just-in-time descriptive analytics as a novel application of computational and statistical techniques performed at interaction-time to help users easily understand the structure of data as seen in visualizations. Fundamental to just-intime descriptive analytics is (a) identifying visual feat...
false
false
[ "Eser Kandogan" ]
[]
[]
[]
VAST
2,012
LeadLine: Interactive visual analysis of text data through event identification and exploration
10.1109/VAST.2012.6400485
Text data such as online news and microblogs bear valuable insights regarding important events and responses to such events. Events are inherently temporal, evolving over time. Existing visual text analysis systems have provided temporal views of changes based on topical themes extracted from text data. But few have as...
false
false
[ "Wenwen Dou", "Derek Xiaoyu Wang", "Drew Skau", "William Ribarsky", "Michelle X. Zhou" ]
[]
[]
[]
VAST
2,012
LensingWikipedia: Parsing text for the interactive visualization of human history
10.1109/VAST.2012.6400530
Extracting information from text is challenging. Most current practices treat text as a bag of words or word clusters, ignoring valuable linguistic information. Leveraging this linguistic information, we propose a novel approach to visualize textual information. The novelty lies in using state-of-the-art Natural Langua...
false
false
[ "Ravikiran Vadlapudi", "Maryam Siahbani", "Anoop Sarkar", "John Dill" ]
[]
[]
[]
VAST
2,012
Matrix-based visual correlation analysis on large timeseries data
10.1109/VAST.2012.6400549
In recent years, the quantity of time series data generated in a wide variety of domains grown consistently. Thus, it is difficult for analysts to process and understand this overwhelming amount of data. In the specific case of time series data another problem arises: time series can be highly interrelated. This proble...
false
false
[ "Michael Behrisch 0001", "James Davey", "Tobias Schreck", "Daniel A. Keim", "Jörn Kohlhammer" ]
[]
[]
[]
VAST
2,012
Optimizing an SPT-tree for visual analytics
10.1109/VAST.2012.6400544
Despite the extensive work done in the scientific visualization community on the creation and optimization of spatial data structures, there has been little adaptation of these structures in visual analytics and information visualization. In this work we present how we modify a space-partioning time (SPT) tree - a stru...
false
false
[ "Connor Gramazio", "Remco Chang" ]
[]
[]
[]
VAST
2,012
Priming Locus of Control to affect performance
10.1109/VAST.2012.6400535
Recent research suggests that the personality trait Locus of Control (LOC) can be a reliable predictor of performance when learning a new visualization tool. While these results are compelling and have direct implications to visualization design, the relationship between a user's LOC measure and their performance is no...
false
false
[ "Alvitta Ottley", "R. Jordan Crouser", "Caroline Ziemkiewicz", "Remco Chang" ]
[]
[]
[]
VAST
2,012
Reinventing the Contingency Wheel: Scalable Visual Analytics of Large Categorical Data
10.1109/TVCG.2012.254
Contingency tables summarize the relations between categorical variables and arise in both scientific and business domains. Asymmetrically large two-way contingency tables pose a problem for common visualization methods. The Contingency Wheel has been recently proposed as an interactive visual method to explore and ana...
false
false
[ "Bilal Alsallakh", "Wolfgang Aigner", "Silvia Miksch", "M. Eduard Gröller" ]
[ "HM" ]
[]
[]
VAST
2,012
Relative N-gram signatures: Document visualization at the level of character N-grams
10.1109/VAST.2012.6400484
The Common N-Gram (CNG) classifier is a text classification algorithm based on the comparison of frequencies of character n-grams (strings of characters of length n) that are the most common in the considered documents and classes of documents. We present a text analytic visualization system that employs the CNG approa...
false
false
[ "Magdalena Jankowska", "Vlado Keselj", "Evangelos E. Milios" ]
[]
[]
[]
VAST
2,012
Scatter/Gather Clustering: Flexibly Incorporating User Feedback to Steer Clustering Results
10.1109/TVCG.2012.258
Significant effort has been devoted to designing clustering algorithms that are responsive to user feedback or that incorporate prior domain knowledge in the form of constraints. However, users desire more expressive forms of interaction to influence clustering outcomes. In our experiences working with diverse applicat...
false
false
[ "Mahmud Shahriar Hossain", "Praveen Kumar Reddy Ojili", "Cindy Grimm", "Rolf Müller", "Layne T. Watson", "Naren Ramakrishnan" ]
[]
[]
[]
VAST
2,012
Semantic Interaction for Sensemaking: Inferring Analytical Reasoning for Model Steering
10.1109/TVCG.2012.260
Visual analytic tools aim to support the cognitively demanding task of sensemaking. Their success often depends on the ability to leverage capabilities of mathematical models, visualization, and human intuition through flexible, usable, and expressive interactions. Spatially clustering data is one effective metaphor fo...
false
false
[ "Alex Endert", "Patrick Fiaux", "Chris North 0001" ]
[]
[]
[]
VAST
2,012
Smart super views---A knowledge-assisted interface for medical visualization
10.1109/VAST.2012.6400555
Due to the ever growing volume of acquired data and information, users have to be constantly aware of the methods for their exploration and for interaction. Of these, not each might be applicable to the data at hand or might reveal the desired result. Owing to this, innovations may be used inappropriately and users may...
false
false
[ "Gabriel Mistelbauer", "Hamed Bouzari", "Rüdiger Schernthaner", "Ivan Baclija", "Arnold Köchl", "Stefan Bruckner", "Milos Srámek", "M. Eduard Gröller" ]
[]
[]
[]
VAST
2,012
SocialNetSense: Supporting sensemaking of social and structural features in networks with interactive visualization
10.1109/VAST.2012.6400558
Increasingly, social network datasets contain social attribute information about actors and their relationship. Analyzing such network with social attributes requires making sense of not only its structural features, but also the relationship between social features in attributes and network structures. Existing social...
false
false
[ "Liang Gou", "Xiaolong Zhang 0001", "Airong Luo", "Patricia F. Anderson" ]
[]
[]
[]
VAST
2,012
Spatiotemporal social media analytics for abnormal event detection and examination using seasonal-trend decomposition
10.1109/VAST.2012.6400557
Recent advances in technology have enabled social media services to support space-time indexed data, and internet users from all over the world have created a large volume of time-stamped, geo-located data. Such spatiotemporal data has immense value for increasing situational awareness of local events, providing insigh...
false
false
[ "Junghoon Chae", "Dennis Thom", "Harald Bosch", "Yun Jang", "Ross Maciejewski", "David S. Ebert", "Thomas Ertl" ]
[]
[]
[]
VAST
2,012
Subspace search and visualization to make sense of alternative clusterings in high-dimensional data
10.1109/VAST.2012.6400488
In explorative data analysis, the data under consideration often resides in a high-dimensional (HD) data space. Currently many methods are available to analyze this type of data. So far, proposed automatic approaches include dimensionality reduction and cluster analysis, whereby visual-interactive methods aim to provid...
false
false
[ "Andrada Tatu", "Fabian Maass", "Ines Färber", "Enrico Bertini", "Tobias Schreck", "Thomas Seidl 0001", "Daniel A. Keim" ]
[]
[]
[]
VAST
2,012
The Deshredder: A visual analytic approach to reconstructing shredded documents
10.1109/VAST.2012.6400560
Reconstruction of shredded documents remains a significant challenge. Creating a better document reconstruction system enables not just recovery of information accidentally lost but also understanding our limitations against adversaries' attempts to gain access to information. Existing approaches to reconstructing shre...
false
false
[ "Patrick Butler", "Prithwish Chakraborty", "Naren Ramakrishnan" ]
[]
[]
[]
VAST
2,012
The spatiotemporal multivariate hypercube for discovery of patterns in event data
10.1109/VAST.2012.6400536
Event data can hold valuable decision making information, yet detecting interesting patterns in this type of data is not an easy task because the data is usually rich and contains spatial, temporal as well as multivariate dimensions. Research into visual analytics tools to support the discovery of patterns in event dat...
false
false
[ "Fred Olislagers", "Marcel Worring" ]
[]
[]
[]
VAST
2,012
The User Puzzle---Explaining the Interaction with Visual Analytics Systems
10.1109/TVCG.2012.273
Visual analytics emphasizes the interplay between visualization, analytical procedures performed by computers and human perceptual and cognitive activities. Human reasoning is an important element in this context. There are several theories in psychology and HCI explaining open-ended and exploratory reasoning. Five of ...
false
false
[ "Margit Pohl", "Michael Smuc", "Eva Mayr" ]
[]
[]
[]
VAST
2,012
Time-oriented visualization and anticipation
10.1109/VAST.2012.6400546
Temporal awareness is pivotal to successful real-time dynamic decision making in a wide range of command and control situations; particularly in safety-critical environments. However, little explicit support for operators' temporal awareness is provided by decision support systems (DSS) for time-critical decisions. In ...
false
false
[ "Cindy Chamberland", "François Vachon", "Jean-François Gagnon", "Simon P. Banbury", "Sébastien Tremblay" ]
[]
[]
[]
VAST
2,012
Using translational science in visual analytics
10.1109/VAST.2012.6400543
We introduce translational science, a research discipline from medicine, and show how adapting it for visual analytics can improve the design and evaluation of visual analytics interfaces. Translational science “translates” knowledge from the lab to the real-world to “ground truth” by incorporating a 3 phase program of...
false
false
[ "Tera Marie Green", "Brian D. Fisher" ]
[]
[]
[]
VAST
2,012
Using visual analytics to detect problems in datasets collected from photo-sharing services
10.1109/VAST.2012.6400538
Datasets that are collected for research often contain millions of records and may carry hidden pitfalls that are hard to detect. This work demonstrates how visual analytics can be used for identifying problems in the spatial distribution of crawled photographic data in different datasets: Picasa Web Albums, Panoramio,...
false
false
[ "Alexander Kachkaev", "Jo Wood" ]
[]
[]
[]
VAST
2,012
VDQAM: A toolkit for database quality evaluation based on visual morphology
10.1109/VAST.2012.6400531
Data quality evaluation is one of the most critical steps during the data mining processes. Data with poor quality often leads to poor performance in data mining, low efficiency in data analysis, wrong decision which bring great economic loss to users and organizations further. Although many researches have been carrie...
false
false
[ "Dongxing Teng", "Haiyan Yang", "CuiXia Ma", "Hongan Wang" ]
[]
[]
[]
VAST
2,012
Visual analytics for the big data era---A comparative review of state-of-the-art commercial systems
10.1109/VAST.2012.6400554
Visual analytics (VA) system development started in academic research institutions where novel visualization techniques and open source toolkits were developed. Simultaneously, small software companies, sometimes spin-offs from academic research institutions, built solutions for specific application domains. In recent ...
false
false
[ "Leishi Zhang", "Andreas Stoffel", "Michael Behrisch 0001", "Sebastian Mittelstädt", "Tobias Schreck", "René Pompl", "Stefan Weber 0004", "Holger Last", "Daniel A. Keim" ]
[]
[]
[]
VAST
2,012
Visual Analytics Methodology for Eye Movement Studies
10.1109/TVCG.2012.276
Eye movement analysis is gaining popularity as a tool for evaluation of visual displays and interfaces. However, the existing methods and tools for analyzing eye movements and scanpaths are limited in terms of the tasks they can support and effectiveness for large data and data with high variation. We have performed an...
false
false
[ "Gennady L. Andrienko", "Natalia V. Andrienko", "Michael Burch", "Daniel Weiskopf" ]
[ "BP" ]
[]
[]
VAST
2,012
Visual analytics methods for categoric spatio-temporal data
10.1109/VAST.2012.6400553
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 possibilities to analyze the three aspects (location, time and category...
false
false
[ "Tatiana von Landesberger", "Sebastian Bremm", "Natalia V. Andrienko", "Gennady L. Andrienko", "Maria Tekusova" ]
[]
[]
[]
VAST
2,012
Visual Classifier Training for Text Document Retrieval
10.1109/TVCG.2012.277
Performing exhaustive searches over a large number of text documents can be tedious, since it is very hard to formulate search queries or define filter criteria that capture an analyst's information need adequately. Classification through machine learning has the potential to improve search and filter tasks encompassin...
false
false
[ "Florian Heimerl", "Steffen Koch 0001", "Harald Bosch", "Thomas Ertl" ]
[]
[]
[]
VAST
2,012
Visual cluster exploration of web clickstream data
10.1109/VAST.2012.6400494
Web clickstream data are routinely collected to study how users browse the web or use a service. It is clear that the ability to recognize and summarize user behavior patterns from such data is valuable to e-commerce companies. In this paper, we introduce a visual analytics system to explore the various user behavior p...
false
false
[ "Jishang Wei", "Zeqian Shen", "Neel Sundaresan", "Kwan-Liu Ma" ]
[]
[]
[]
VAST
2,012
Visual exploration of local interest points in sets of time series
10.1109/VAST.2012.6400534
Visual analysis of time series data is an important, yet challenging task with many application examples in fields such as financial or news stream data analysis. Many visual time series analysis approaches consider a global perspective on the time series. Fewer approaches consider visual analysis of local patterns in ...
false
false
[ "Tobias Schreck", "Lyubka Sharalieva", "Franz Wanner", "Jürgen Bernard", "Tobias Ruppert", "Tatiana von Landesberger", "Benjamin Bustos" ]
[]
[]
[]
VAST
2,012
Visual pattern discovery using random projections
10.1109/VAST.2012.6400490
An essential element of exploratory data analysis is the use of revealing low-dimensional projections of high-dimensional data. Projection Pursuit has been an effective method for finding interesting low-dimensional projections of multidimensional spaces by optimizing a score function called a projection pursuit index....
false
false
[ "Anushka Anand", "Leland Wilkinson", "Tommy Dang" ]
[]
[]
[]
VAST
2,012
Visualising variations in household energy consumption
10.1109/VAST.2012.6400545
There is limited understanding of the relationship between neighbourhoods, demographic characteristics and domestic energy consumption habits. We report upon research that combines datasets relating to household energy use with geodemographics to enable better understanding of UK energy user types. A novel interactive ...
false
false
[ "Sarah Goodwin", "Jason Dykes" ]
[]
[]
[]
VAST
2,012
Visualizing flows of images in social media
10.1109/VAST.2012.6400539
Mass and social media provide flows of images for real world events. It is sometimes difficult to represent realities and impressions of events using only text. However, even a single photo might remind us complex events. Along with events in the real world, there are representative images, such as design of products a...
false
false
[ "Masahiko Itoh", "Masashi Toyoda", "Tetsuya Kamijo", "Masaru Kitsuregawa" ]
[]
[]
[]
VAST
2,012
Watch this: A taxonomy for dynamic data visualization
10.1109/VAST.2012.6400552
Visualizations embody design choices about data access, data transformation, visual representation, and interaction. To interpret a static visualization, a person must identify the correspondences between the visual representation and the underlying data. These correspondences become moving targets when a visualization...
false
false
[ "Joseph A. Cottam", "Andrew Lumsdaine", "Chris E. Weaver" ]
[]
[]
[]
SciVis
2,012
A Data-Driven Approach to Hue-Preserving Color-Blending
10.1109/TVCG.2012.186
Color mapping and semitransparent layering play an important role in many visualization scenarios, such as information visualization and volume rendering. The combination of color and transparency is still dominated by standard alpha-compositing using the Porter-Duff over operator which can result in false colors with ...
false
false
[ "Lars Kuehne", "Joachim Giesen", "Zhiyuan Zhang", "Sungsoo Ha", "Klaus Mueller 0001" ]
[]
[]
[]
SciVis
2,012
A Novel Approach to Visualizing Dark Matter Simulations
10.1109/TVCG.2012.187
In the last decades cosmological N-body dark matter simulations have enabled ab initio studies of the formation of structure in the Universe. Gravity amplified small density fluctuations generated shortly after the Big Bang, leading to the formation of galaxies in the cosmic web. These calculations have led to a growin...
false
false
[ "Ralf Kähler", "Oliver Hahn", "Tom Abel" ]
[]
[ "P" ]
[ { "name": "Paper Preprint", "url": "http://arxiv.org/pdf/1208.3206v1", "icon": "paper" } ]
SciVis
2,012
A Perceptual-Statistics Shading Model
10.1109/TVCG.2012.188
The process of surface perception is complex and based on several influencing factors, e.g., shading, silhouettes, occluding contours, and top down cognition. The accuracy of surface perception can be measured and the influencing factors can be modified in order to decrease the error in perception. This paper presents ...
false
false
[ "Veronika Soltészová", "Cagatay Turkay", "Mark C. Price", "Ivan Viola" ]
[]
[]
[]
SciVis
2,012
A Visual Analysis Concept for the Validation of Geoscientific Simulation Models
10.1109/TVCG.2012.190
Geoscientific modeling and simulation helps to improve our understanding of the complex Earth system. During the modeling process, validation of the geoscientific model is an essential step. In validation, it is determined whether the model output shows sufficient agreement with observation data. Measures for this agre...
false
false
[ "Andrea Unger", "Sven Schulte", "Volker Klemann", "Doris Dransch" ]
[]
[]
[]
SciVis
2,012
An Adaptive Prediction-Based Approach to Lossless Compression of Floating-Point Volume Data
10.1109/TVCG.2012.194
In this work, we address the problem of lossless compression of scientific and medical floating-point volume data. We propose two prediction-based compression methods that share a common framework, which consists of a switched prediction scheme wherein the best predictor out of a preset group of linear predictors is se...
false
false
[ "Nathaniel Fout", "Kwan-Liu Ma" ]
[]
[]
[]
SciVis
2,012
Analysis of Streamline Separation at Infinity Using Time-Discrete Markov Chains
10.1109/TVCG.2012.198
Existing methods for analyzing separation of streamlines are often restricted to a finite time or a local area. In our paper we introduce a new method that complements them by allowing an infinite-time-evaluation of steady planar vector fields. Our algorithm unifies combinatorial and probabilistic methods and introduce...
false
false
[ "Wieland Reich", "Gerik Scheuermann" ]
[]
[]
[]
SciVis
2,012
Augmented Topological Descriptors of Pore Networks for Material Science
10.1109/TVCG.2012.200
One potential solution to reduce the concentration of carbon dioxide in the atmosphere is the geologic storage of captured CO<sub>2</sub> in underground rock formations, also known as carbon sequestration. There is ongoing research to guarantee that this process is both efficient and safe. We describe tools...
false
false
[ "Daniela Ushizima", "Dmitriy Morozov", "Gunther H. Weber", "Andrea G. C. Bianchi", "James A. Sethian", "E. Wes Bethel" ]
[]
[]
[]
SciVis
2,012
Automatic Detection and Visualization of Qualitative Hemodynamic Characteristics in Cerebral Aneurysms
10.1109/TVCG.2012.202
Cerebral aneurysms are a pathological vessel dilatation that bear a high risk of rupture. For the understanding and evaluation of the risk of rupture, the analysis of hemodynamic information plays an important role. Besides quantitative hemodynamic information, also qualitative flow characteristics, e.g., the inflow je...
false
false
[ "Rocco Gasteiger", "Dirk J. Lehmann", "Roy van Pelt", "Gábor Janiga", "Oliver Beuing", "Anna Vilanova", "Holger Theisel", "Bernhard Preim" ]
[]
[]
[]