VizWorld.com

This article is the third and final in a series of wrap-ups from VizWorld reader T.J. Jankun-Kelly (@dr_tj) of the EuroVis2010 conference currently underway.  If you missed it, see Part 1 and Part 2.

The last day of the conference saw an abbreviated program with two sessions and the plenary. The Best Paper was also awarded. As with the previous day, there were two tracks.

Session 7B: Vectors & Tensors

An Evaluation of Glyph Perception for Real Symmetric Traceless Tensor Properties; T.J. Jankun- Kelly, Yagneshwara Lanka, Edward Swan

This presentation by your humble scribe discussed a perceptual study involving tensors from liquid crystal physics. The motivation was to determine if the glyphs we had previously designed communicated the three perceptual dimensions of the data (orientation, compression/elongation, and flatness) better than other glyphs used by physics. Two users studies involving 30 subjects found that our superquadric tensor glyphs were significantly more accurate in communicating these features; cylindrical glyphs faired the second best with ellipsoids and box-like glyphs following. Similar studies could be performed for other tensor glyphs to determine their efficacy.

Read the read of TJ’s writeup after the break.

Read more…

Science conference, eurovis, feature

This article is the second in a series of wrap-ups from VizWorld reader T.J. Jankun-Kelly (@dr_tj) of the EuroVis2010 conference currently underway.  If you missed it, see Part 1.

Day of EuroVis was the first day of parallel tracks. Today, your humble scribe attended the A track, which largely focused on Information Visualization; for the impression of some of the B track, see Charl Botha’s twitter feed (@cpbotha) or the general EuroVis twitter list (via @eagereyes).

Session 3A: Graph Visualization

SmallWorlds: Visualizing Social Recommendations; Brynjar Gretarsson, John O’Donovan, Svetlin Bostandjiev, Christopher Hall, Tobias Hollerer

Gretarsson, part of the group at UCSB, presented a graph-based recommendation system integrated with the Facebook API. Unlike other recommendation systems, the system works entirely via positive recommendations (“likes”) of a limited subset of a population (a user’s friends, as opposed to all Facebook users). These limitations in comparison to other systems are addressed via visualization and interaction: Users can see which friends have similar likes, change the weight of their friend’s recommendations, and also change the weight of their own likes all based upon simple, web-based interactions. The rendering is done server-side and can be seen on the SmallWorlds Facebook App page.

See the rest of TJ’s writeup after the break.

Read more…

Science conference, eurovis, feature

This article is the first in a series of wrap-ups from VizWorld reader T.J. Jankun-Kelly (@dr_tj) of the EuroVis2010 conference currently underway.

EuroVis 2010 is a three day conference supported by EuroGraphics and IEEE; it was the first of VisWeek’s “sister conferences.” The first VisSym was held in 1999 and became EuroVis in 2005. This year, it is held outside of Bordeaux, France by LaBri. Herein are a few brief glimpses at this year’s conference.

Keynote: Matt Ward Challenges, Partial Solutions, and Open Problems in Multivariate Data Visualization

Matt Ward is a Professor at Worcester Polytechnic Institute who has focused on multivariate visualization for the majority of his career. As one of the chief instigators of XmdvTool, a well established multivariate visualization tool, he has contributed significantly to information and scientific visualization. In his keynote, he shared his perspective on the field of multivariate visualization and how it has changed over the last 20 years.

Read the rest of TJ’s Review after the break.

Read more…

Science conference, eurovis, feature

At the recent Eurovis conference, Danny Holten and Prof. van Wijk presented a paper entitled “Force-Directed Edge Bundling for Graph Visualization”.  They merged the concept of edge bundling with force-directed network graphs, also known as node-link graphs, to show graphs with significantly less clutter and highlight high-level edge patterns.  The picture above models the edges as flexible springs attracted to each other.

Get the paper here.

Force-Directed Edge Bundling for Graph Visualization – information aesthetics.

Science eurovis, graph, paper

A quick reminder to all the Vis Scientists out there that early registration for the EuroVis2009 conference in Berlin, Germany ends May 9th. If you miss it, it’ll cost you approximately an extra 100 Euros ($130 US) to register.

Also, there are some satellite events going on on the day before EuroVis starts:

In connection with EuroVis09 two satellite events will take place on June 9, 2009:

• VisMaster Workshop ”Data Management & Visual Analytics”
• DFG SPP Tutorial “Visual Analytics”.

See page satellite events.

Welcome to EuroVis 2009.

Science conference, eurovis