Archive for the ‘visualization conference’ Category
Bernice E. Rogowitz covered fundamentals in human perception and cognition, and discussed how they apply to visualization. She covered a huge array of topics, ranging from the pupil being partially responsible for our depth perception, all the way to color theory and how it relates directly to the biology of the human eye.
The presentation had a great flow, starting at a very high level to give everyone an idea of what questions they would be able to answer at the end. As the talk progressed, she covered detailed biological details of the human eye, and progressed to the intersection of perceptual issues and computer science.
In the biological portion, we learned that there are five layers of cells in the retina, each responsible for different tasks. Much of the interesting stuff happens at the very beginning (photoreceptor distribution) and then further into the process at the ganglion cells. She went over how lateral inhibition is caused by the spatial distribution of the photoreceptors connected to a single ganglion cell, and how this is the reason for several of the optical illusions we perceive. She did a great job of explaining the connections between biology and perceptual issues.
Cultural differences were also addressed. The eye movements we have are actually learned when we learn how to read. Cultures with different reading directions have substantially different reading directions.
The section on the Striate Cortex was especially interesting. This is the first time in the visual system that images from each eye are merged (the point where depth perception occurs). This section sends output to 60% of the brain! This is a huge amount, and makes the visual system incredibly important to the decision making process.
This tutorial had a huge quantity of useful information and was really well put together! She concluded with a great summary of four things to remember:
- There are different response rates for different stimuli, how well do you want to convey magnitude information?
- Color and luminance mechanisms have different spatial sensitivities.
- Certain visual information is perceived “pre-attentively” such as color.
- How the world is perceived depends on what the user is trying to accomplish.
Workshop: Telling Stories With Data
The Telling Stories With Data session was a continuation of last year’s session, largely inspired by the Edward Segel and Jeffrey Heer paper; “Narrative Visualization: Telling Stories with Data.”
Steve Drucker from Microsoft Research talked about his rich interactive narrative player work. The tool uses XML to set up a queue of keyframes with audio narration. It supports audio narration and multimedia embedding.
Wesley Willet talked about supporting ad-hoc storytelling in social media. He raised several technical issues, including the need for interactive visualization state encoding in URLs. This would allow people to link to a specific state in the visualization, and share that state over social media.
Jerome Cukier talked about adding personal connections to visualizations to help audience engagement. He also discussed the importance of providing interaction that lets users feel like they are exploring the dataset and coming to their own conclusions. A significant take- away quote Jerome had is “Trust is not really an exact science.”
Sunah Suh framed a discussion about the impact of culture on visualization and visualization on culture. She discussed the multiple forms of literacy beyond just natural language, addressing issues of statistical literacy as well as visual. She raised the point that visualization does not just reflect and rely on societal norms, it also reinforces them. One example she gave was the pink and blue color coding in Baby Name Voyager reinforcing a binary gender concept.
The takeaways from the first half of the session dealt with technical issues of platforms and tools to support narratives, as well as some of the social issues going on in narrative visualizations. Both of these are important issues as narrative visualization finds its place in culture. The necessary tools must be developed to help narrative visualization become ubiquitous, but also there are social issues to be addressed as people come to terms with the new media.
These notes were transcribed by Lane Harrison (@laneharrison) and Drew Skau(@seeingstructure). They are both graduate students at UNCC. Thanks guys!! There were other excellent speakers who presented, but Drew and Lane were presenting in an adjoining session.
The annual IEEE Visualization, IEEE Information Visualization and IEEE Visual Analytics Science and Technology conferences – together known as IEEE Visweek will be held in Providence, RI from October 23rd to October 28th.The detailed conference program is spectacular and can be downloaded here.Some of the new events this year are under the Professional’s Compasscategory. It includes a Blind date lunch (where one can meet some researcher they have never met and learn about each others research), Meet the Editors (where one can meet editors from the top graphics and visualization journals), Lunch with the Leaders session (an opportunity to meet famous researchers in the field) and Meet the faculty/postdoc candidates (especially geared towards individuals looking for a postdoctoral position or a faculty position). I think this is an excellent idea and hope that the event is a hit at the conference.I am also eagerly looking forward towards the two collocated symposia – IEEE Biological Data Visualization (popularly known as biovis) and IEEE LDAV (Large data analysis and visualization). Their excellent programs are out and I’d encourage you to take a look at them.
The tutorials this year look great and I am particularly looking forward to the tutorial on Perception and Cognition for Visualization, Visual Data Analysis and Computer Graphics by Bernice Rogowitz. Here is an outline for the tutorial that can be found on her website. She was one of the first people to recommend that people STOP using the rainbow color map.
The telling stories with data workshop too looks great and will be a continuation of the great tutorial held by the same group last year. I am eagerly looking forward to it.
Apart from this are the excellent papers that will be presented at the conference. I shall write another post about the ones I am particularly looking forward to. With so many exciting events going on, it almost seems like a crime to have all of them happening in the span of a few days.
I shall definitely be blogging about the event as much as I can. You can also follow me on twitter, which will have more real time tweets than the blog which will distil a days worth of information into a post.
Let me know if you are going to be around and I’ll be happy to talk to you.
InfoVis (Information Visualization) 2009 is an integral part of the Annual VisWeek conference. This year the VisWeek conference will be held in Atlantic city, NJ from October 11th-16th. In the next few posts, I shall post my views on things to look out for in each of the tracks at the VisWeek conference: VAST, Vis and Infovis. Here are some exciting talks/panels/workshops/tutorials that I’m looking forward to at InfoVis this year (Links and other material shall be updated as material becomes available):
Collaborative Visualization on Interactive Surfaces (CoVIS)
Organizers: Petra Isenberg, Michael Sedlmair, Dominikus Baur,
Tobias Isenberg, Andreas Butz
Visualization and Analysis Using VisIt
Organizer: Hank Childs
Exploring Design Decisions for Effective Information Visualization
Organizers: Jo Wood, Jason Dykes, Aidan Slingsby
InfoVis Best Paper Award
ABySS-Explorer: Visualizing Genome Sequence Assemblies
Cydney B. Nielsen, Shaun D. Jackman, Inanç Birol, Steven J.M. Jones
InfoVis Best Paper Award
Mapping Text with Phrase Nets
Frank van Ham, Martin Wattenberg, Fernanda B. Viégas
InfoVis Honorable Mention
MizBee: A Multiscale Synteny Browser
Miriah Meyer, Tamara Munzner, Hanspeter Pfister
InfoVis Honorable Mention
Configuring Hierarchical Layouts to Address Research Questions
Aidan Slingsby, Jason Dykes, Jo Wood
InfoVis Honorable Mention
SellTrend: Inter-Attribute Visual Analysis of Temporal Transaction
Data, Zhicheng Liu, John Stasko, Timothy Sullivan
Spatiotemporal Analysis of Sensor Logs using Growth Ring Maps
Peter Bak, Florian Mansmann, Halldor Janetzko, Daniel A. Keim
A Nested Model for Visualization Design and Validation
“Search, Show Context, Expand on Demand”: Supporting Large Graph Exploration with Degree-of-Interest
Frank van Ham, Adam Perer
A Comparison of User-Generated and Automatic Graph Layouts,
Tim Dwyer, Bongshin Lee, Danyel Fisher, Kori Inkpen Quinn, Petra Isenberg, George Robertson, Chris North
Visualizing Social Photos on a Hasse Diagram for Eliciting
Relations and Indexing New Photos, Michel Crampes, Jeremy de Oliveira-Kumar, Sylvie Ranwez, Jean Villerd
Bubble Sets: Revealing Set Relations with Isocontours over Existing Visualizations
Christopher Collins, Gerald Penn, Sheelagh Carpendale
Temporal Summaries: Supporting Temporal Categorical Searching, Aggregation and Comparison
Taowei David Wang, Catherine Plaisant, Ben Shneiderman, Neil Spring, David Roseman, Greg Marchand, Vikramjit Mukherjee, Mark Smith
Harnessing the Web Information Ecosystem with Wiki-based Visualization Dashboards
SpicyNodes: Radial Layout Authoring for the General Public
Michael Douma, Grzegorz Ligierko, Ovidiu Ancuta, Pavel Gritsai, Sean Liu
code swarm: A Design Study in Organic Software Visualization
Michael Ogawa, Kwan-Liu Ma
Protovis: A Graphical Toolkit for Visualization
Michael Bostock, Jeffrey Heer
Participatory Visualization with Wordle
Fernanda B. Viégas, Martin Wattenberg, Jonathan Feinberg
Capstone: Visual aids: Use of Paintings and Photography for Lighting in the Theater
Speaker: Brian MacDevitt, Broadway Lighting Designer
VAST is the Visual Analytics track at the Annual VisWeek conference. This year the VisWeek conference will be held in Atlantic city, NJ from October 11th-16th. In the next few posts, I shall post my views on things to look out for in each of the tracks at the VisWeek conference: VAST, Vis and Infovis. Here are some exciting talks/panels/sessions that I’m looking forward to this year (Links and other material shall be updated as soon as the papers are available):
Interactive Visual Clustering of Large Collections of Trajectories,
Gennady Andrienko, Natalia Andrienko, Salvatore Rinzivillo, Mirco Nanni, Dino Pedreschi, Fosca Giannotti
A Framework for Uncertainty-Aware Visual Analytics
Carlos D. Correa, Yu-Hsuan Chan, Kwan-Liu Ma
Parallel Tag Clouds to Explore and Analyze Faceted Text Corpora (YouTube Video)
Christopher Collins, Fernanda B. Viégas, Martin Wattenberg
Describing Story Evolution from Dynamic Information Streams
Stuart Rose, Scott Butner, Wendy Cowley, Michelle Gregory, Julia Walker
Evaluating Visual Analytics Systems for Investigative Analysis: Deriving Design Principles from a Case Study
Youn-ah Kang, Carsten Görg, John Stasko
Visual Analysis of Graphs with Multiple Connected Components
Tatiana von Landesberger, Melanie Görner, Tobias Schreck
VAST Best Paper Award: Iterative Integration of Visual Insights during Patent Search and Analysis
Steffen Koch, Harald Bosch, Mark Giereth, Thomas Ertl
FinVis: Applied Visual Analytics for Personal Financial Planning
Stephen Rudolph, Anya Savikhin, David S. Ebert
Visual Opinion Analysis of Customer Feedback Data
Daniela Oelke, Ming Hao, Christian Rohrdantz, Daniel A. Keim, Umeshwar Dayal, Lars-Erik Haug, Halldór Janetzko
VAST Capstone Panel
How Interactive Visualization Can Assist Investigative Analysis: Views and Perspectives from Domain Experts
Organizer: John Stasko
Panelists: Sarah Cohen, Lawrence Hunter, Joe Parry
Are you planning to come by to the VisWeek conference? Is so, which sessions are you interested in?
The Eurovis 2009 conference concluded a few days ago in Berlin. Here are some of the papers that I found interesting. Links for all the papers are not available yet, but I shall update the post as and when I find them. Here is the whole list of accepted eurovis 2009 papers.
The keynote talk was given by Pat Hanrahan who is known to give very insightful and thought provoking keynote and capstone talks. This keynote talk was titled Systems of Thought. You can also take a look at his slides from other talks on this website http://graphics.stanford.edu/~hanrahan/
This year at the conference, they awarded 3 best paper awards. Congratulations to the authors of the papers! These are the ‘best paper award winners':
Visualisation of Sensor Data from Animal Movement
Edward Grundy, Mark W. Jones, Robert S. Laramee, Rory P. Wilson and Emily L.C. Shepard – In this paper they present a unique way of visualization data obtained from sensors attached to animals as they move around the world. Animals such as the cormorant, sea turtles and such were tagged with tri axial accelerometers and tracked through time.
On Visualization and Reconstruction from Non-Uniform Point Sets using B-Splines
Erald Vuçini, Torsten Möller and M. Eduard Gröller
Collaborative Brushing and Linking for Co-located Visual Analytics of Document Collections
Petra Isenberg and Danyel Fisher – In this paper they discuss a collaborative interface to interact with a collection of documents. The collaborative interface is called Cambiera and is a table top analytics tool. You can also see a video of users interacting with Cambiera on Youtube.
Here are some of the other papers that I thought were very interesting and hope to go through them in more detail (as they become available) :
Illuminated 3D Scatterplots
Harald Sanftmann, Daniel Weiskopf – In this paper, the authors tackled an important and challenging problem of visualizing 3D scatterplots. 2D scatterplots are well known to convey data effectively. The use of illumination to better visualize the 3D nature of the data was a very elegant solution and seems to work quite well.
Instant Volume Visualization using Maximum Intensity Difference Accumulation
Stefan Bruckner and M. Eduard Gröller – This paper proposes a novel way to integrate along the ray in the volume rendering process. The idea is very unique and provides excellent results. Since techniques such as MIP, DVR are part of every volume rendering course, seeing such novel and interesting techniques is always exciting.
Semi-Automatic Time-Series Transfer Functions via Temporal Clustering and Sequencing
Jonathan Woodring, Han-Wei Shen – Time-varying data visualization is always challenging due to the large amounts of data that needs to be visualized. The authors propose a clustering and sequencing based technique to generate ‘semi-automatic’ transfer functions for the data.
A Directional Occlusion Shading Model for Interactive Direct Volume Rendering
Mathias Schott, Vincent Pegoraro, Charles Hansen, Kévin Boulanger, Kadi Bouatouch – I enjoyed reading this paper a lot since people rarely seem to talk about anything other than ambient occlusion these days. This paper presents an elegant and unique way to provide occlusion shading with reasonable frame rates. Looking forward to implementing this soon.
Visualization of Vessel Movements
Niels Willems, Huub van de Wetering, Jarke J. van Wijk – This paper provides a very beautiful solution to the problem of visualizing vessels coming in and out of a port. I enjoy reading J. J. van Wijk’s papers and this and the next one are not any different.
Force-Directed Edge Bundling for Graph Visualization
Danny Holten, Jarke J. van Wijk – The authors follow up on the excellent paper from IEEE Vis 2005 on ‘Hierarchical Edge Bundles: Visualization of Adjacency Relations in Hierarchical Data‘ (which was mentioned in one of my previous posts on Seminal infovis papers), with another great paper. This paper has already received a lot of attention here, here and here. Here is a screenshot showing migration patters in the united states.
Context-Aware Volume Modeling of Skeletal Muscles
Zhicheng Yan, Wei Chen, Aidong Lu, David Ebert
Map Displays for the Analysis of Scalar Data on Cerebral Aneurysm Surfaces
Mathias Neugebauer, Rocco Gasteiger, Oliver Beuing, Volker Diehl, Martin Skalej, Bernhard Preim
Visual Analysis of Brain Activity from fMRI Data
Firdaus Janoos, Boonth Nouanesengsy, Raghu Machiraju, Han Wei Shen, Steffen Sammet, Michael Knopp, István Á. Mórocz
In the past, I have discussed visualization tools and a few companies that make them. They are used by a wide variety of professionals such as the Business Intelligence community, Scientific Data explorers, Financial data analysts and many more users.
I feel though that more often than not such tools are an afterthought in a company’s think tank and require a significant amount of training, learning and overcoming a mental block by the senior management of a company. Companies such as Tableau Software, Spotfire, and many others must have excellent sales teams which, on identifying companies that may be able to benefit from their really stellar software, have to then pitch it to them. Even if the software blows the company management away, the reluctance on their part in adopting it surely must be a problem. Additionally, I am sure that even if the top management think its a great idea, the real users (lower level management/marketing/sales professionals) might not have the time and willingness to invest into using the software.
I know that the people behind these visualization companies are brilliant researchers who are not only innovating in the field of visualization but also taking the extra effort to improve on proven visualization techniques in order to make them easy to use.
I feel very strongly about this matter and wonder if a few things can be done to avoid this situation in the future. Clearly, just as training radiologists and other medical software users to use 3D volume rendering software is an uphill task, training business analysts to use visualization tools must be a difficult task.
1 – Provide an educational version of the software that can be available and used only through academic institutions. They could be fully featured or have only some evaluation features but let your software be one of the first tools that students use when analyzing their data. That will ensure that at least a few of them will be trained in using the tool when they go on to join a company and root for your visualization software at the company. If you think about it, companies like Microsoft allow free downloads of their express edition of Visual Studio for students which ensures a familiarity with the software that developers then take to companies when they join there. In my experience, students are far more ready to learn new software and technologies as compared to senior management in a company. They also have more time on their hands and can devote more time to learn the spiffy new features in your visualization software.
2 – Developing a course or two for data analysis in conjunction with a professor at a university – Merely providing educational versions of the software is of limited value. An interesting data analysis course that teaches use of your software or two/three other similar software tools along with basics of data analysis and an overview of visualization techniques might be another interesting way to approach the problem.
3 – Provide easy to use learning material – Take the time and make sure to have tutorials and multitudes of examples on your website that will allow users to use them and improve over time. Having a free PDF book or a step-by-step tutorial can vastly benefit the user and take some load off of your hands for training purposes. Tableau software does an amazing job in the training realm as can be seen by the examples at http://www.tableausoftware.com/learning/examples. You can even download a ‘workbook’ for each example and play around with it in your copy of the software.
4 – Provide free training in the form of Webcasts – Recently, nvidia had a few webcasts focused on CUDA and its applicability for general purpose computing on the GPU. The webcast consisted of a few nvidia developers giving a presentation and answering some questions at the end. The webcast was free and was a great way to indoctrinate a few more researchers to use CUDA for which they would have to buy nvidia graphics cards. I thought it was a great idea which could be taken even further when applied to visualization software. If your users already have a running software, then publishing sample datasets and walking them through it can be even more compelling and interactive than reading an online tutorial or a book chapter.
5 – Providing training at a conference or a workshop might be another way to get users to download your evaluation version and play with some data. Google has been doing similar ‘training’ at conferences like SIGGRAPH and IEEE Visualization for the last couple of years now. This helps you get new users as well as allow for professionals attending the conference to learn something they might convey to their company when they go back to work, which could translate into acceptance and added sales for the company.
If you have any other suggestions, please feel free to let me know. Sorry there are no pretty visualizations in this post :)