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The standard model of scale-free networks (conveniently summarized in Barabasi's book Linked
) captures the growth of the network via two principles: preferential attachment and time (ok, we can throw in fitness as well). However, as far as I know, none of the models in the literature include a notion of the cost of creating and maintaining a link.
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20 Mar 09
XMind - Social Brainstorming and Mind Mapping
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XMind, combined with online sharing service, provides a revolutionary way to enable both team brainstorming and personal mind mapping. With this major upgrade, we bring Web 2.0 concepts on community sharing into a popular desktop application. New Gantt view allows project managers to easily track project tasks and schedules. You'll find many more useful and time-saving functions in XMind product family.
30 Jan 09
New computational technique allows comparison of whole genomes as easily as whole books
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Text comparison of English books with the FFP method yields a relationship tree that groups similar books together, by genre, period or author. Credit: Sung-Hou Kim laboratory, UC Berkeley
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17 Jan 09
Technology Review: Basking in Big Data
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Recently, however, researchers at the University of California, Davis, and Lawrence Livermore National Laboratory announced that they have developed software that makes analysis and visualization of huge data sets possible without the aid of a supercomputer. The researchers' algorithm slices up data into more manageable chunks, then stitches it back together on the fly, so that the data can be manipulated in three dimensions, all on a computer with the power and capacity of a high-end laptop.
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22 Aug 08
Data Visualization and Infographics | Graphics, Monday Inspiration | Smashing Magazine
via Acer
Weblog Activation Simulation on Vimeo
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This graph animation illustrates the reach over time of a blog post. When a blog is activated (when a node is selected by the pointer) other blogs that link to it have some chance of referring to the injected post. The animation is intended to give an impression of how information might spread in the blogosphere.
09 Apr 08
Data Mining: Text Mining, Visualization and Social Media: The Spectrum of Network Ties
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The Spectrum of Network Ties
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Some examples: broadcast media tend to have a low cost for adding a link - turning on the TV doesn't cost the tv station much, following someone on Twitter is low cost. Creating and maintaining real social contacts does cost us in the form of attention and memory (Gladwell describes connectors as people who can do this task well).
02 Mar 08
Data Mining: Text Mining, Visualization and Social Media: New York Times Movies Graphic
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Many people have pointed to this interesting visualization in the New York Times which shows data describing movie hits (and misses) over a long time period. Neoformix also has a nice composition which stitches the entire line of data together to form a complete picture. But there are some question marks against this type of view. Take a look at the sample below.
The problem - to me - is that absolute height has weight here. So it looks like National Treasure: Book of Secrets is really, really important. National Treasure's first two weekends brought in $45MM and $65MM ($110MM) where as I Am Legend brought in $77MM and $33MM ($110MM). This problem, however, is something of a have-cake-and-eat-it issue. The graphic is primarily intended to show the aggregate view of the entire space. It then uses in situ mechanism to allow the user to browse down to the details (thus making comparison hard, but achieving the overall goal).
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