Blog Announcement Community ~ gsoc It’s a great news, Gephi has been accepted again for the Google Summer of Code for the 5th year! The program is the best way for students around the world to start contributing to an open-source project. Since 2009, each edition is a great success and dramatically boosted Gephi’s project development. What is Gephi? Networks are everywhere: email systems, financial transaction systems and gene-protein interaction networks are just a few examples. Gephi is a “Photoshop” for graphs: designed to make data navigation and manipulation easy, it covers the entire process from data importing to aesthetics refinements and communication. Gephi’s project aims at providing the perfect tool to visualize and analyze networks. Usability: Easy to install, an UI without scripts and real-time manipulation.Performance: Visualization engine and data structures are built scalable. List of ideas List of ideas are availabe on our wiki. Please also propose your ideas on the forum.
Dear Data: A Fascinating Year-Long Hand-Drawn Data Visualisation Project Designers Giorgia Lupi (New York) and Stefanie Posavec (London) recently launched a fascinating postcard project called Dear Data. Each week the two data artists measure one aspect of their daily lives and then represent that information with a drawing on a postcard. Every Monday they put their postcards into the mail to journey across the ocean to the other and begin collecting data for the next postcard. Having only met twice in person, this project is as much about the two of them getting to know one another as it is about finding creative ways to record details of their own lives. There are so many interesting details in the notes they make for each other; instructions on how to decode the often extremely abstract ways they’ve represented their findings, as well as little tidbits about their day. The topics they choose for each week vary from people and purchases they make to emotions and the number of times they look at themselves in a mirror or window. Dear Data Project Website
Data Visualization Review: Gephi, Free Graph Exploration Software I do not often get to play with networks, yet I find them fascinating and full of knowledge gathering potential. The data visualization works of Moritz Stefaner, Jer Thorp, and Mark Lombardi captivate me. I am intrigued by relationships, how we perceive them, and how we can understand them. Gephi, the "Open Graph Viz Platform", is not just for the hobbiest node nerd. So what is Gephi capable off? Gephi interface displaying airline traffic data. Pros — Options! Cons — Interface is a bit cluttered. Main interface displaying the Diseasome data. Review Overall, Gephi is a useful and interesting tool. There are some plugins available for Gephi that extend the functionality. The only thing keeping Gephi from being a professional grade tool is its bugginess and lack of documentation. Graph of Minard's data using Gephi and the GeoLayout plugin. For the Purists Gephi is a purist's delight. Two nerdy charts of network statistics that Gephi will output.
Gephi, an open source graph visualization and manipulation software Plotting Your Favorite Novels Visually Keywords that most frequently appear in Bram Stoker’s ‘Dracula’ (all images courtesy Matthew Jockers) In the 1967 lecture “Cybernetics and Ghosts,” Italian author and critic Italo Calvino asks us to imagine a machine that composes literature. Would the authorship of the resulting works cheapen their value? Calvino, who follows the structuralist tradition in maintaining that literature is just the combination and recombination of a set of stock elements, thinks not. Others beg to differ. The literature machine may still be a few years away, but the literary criticism machine is already here, at least in one iteration: Matthew Jockers, a professor at the University of Nebraska, is at work compiling data from novels in an attempt to determine whether there’s a set of common plots. Jockers’s work suggests that there are six or seven recurring plots, although when he spoke to Hyperallergic he was careful to clarify that we should be cautious in drawing broader conclusions. January 6, 2015
Introduction to behavioral economics Just days ago, President Obama issued this executive order: A growing body of evidence demonstrates that behavioral science insights -- research findings from fields such as behavioral economics and psychology about how people make decisions and act on them -- can be used to design government policies to better serve the American people. So just what is behavioral economics? Well, if you're working on problems that involve people making decisions, you better at least know the basics. (And let's be serious... if a problem doesn't involve human behavior, is it even a problem???) Let's dive in... Traditional economic theory is founded upon the concept of homo economicus (economic man). So what's wrong with the homo economicus model? Well, when we look at the actual choices and behaviors of most people, they don't line up with this model of rational self-interest. Luckily, new theories are emerging to help us understand these poor choices, homo economicus be damned. The brain: two systems
Cytoscape: An Open Source Platform for Complex Network Analysis and Visualization Tagxedo - Word Cloud with Styles NodeXL: Network Overview, Discovery and Exploration for Excel - Home Venn Templates and Venn Diagram Software - Free and no download required with Gliffy Online A Venn diagram is a simple way to represent the relationships between groups of things with a clear, visual display. Let your ideas overlap In a Venn diagram, large circles represent groups of things with a shared attribute. Areas where these circles overlap represent individuals that belong equally to both groups. For example, a Venn diagram with one circle representing things made with yeast and another representing alcoholic beverages would have an overlapping zone where you could find both beer and wine. Circles in a Venn diagram can overlap partially, overlap completely, or even be totally separate — letting the viewer see the relationship between the groups at a glance. Venn diagrams have many uses: Explaining systems of taxonomy Displaying organizational systems Exploring different classes of items Winning internet arguments Take it on the road Gliffy takes all the work out of creating high-quality diagrams.
Wikipedia Visualizations IBM: History Flow IBM: Chromogram Tod Holloway: The 'Power Struggle' in Wikipedia Yonathan Feinberg: Wordle This chart is based on the full text of the English Wikipedia article on Barack Obama (19 June 2009 18:06 GMT) The size of a word in the visualization is proportional to the number of times the word appears in the input text. Author of Wordle: Yonathan Feinberg (2009) - Credits - Web Site László Kozma: WikipediaVision Will Muto: The WIKIPEDIA Effect 2.0 Quote: "Using Processing, I am traversing a mere fraction of Wikipedia's massive link structure and creating maps in 3D space. Author: Will Muto (2007) - Web Site Chris Harrison: Top 50 visited articles on English Wikipedia Chris Harrison: Clusterball Myshkin Ingawale : Wikipedia Article Network eyePlorer.com : The Graphical Knowledge Engine Simon le Bon : Language Development on Wikipedia Moritz Stefaner • Dario Taraborelli • Giovanni Luca Ciampaglia: 100 Longest Article for Deletion [AfD] discussions on Wikipedia TraceMedia Terra Incognita
Fruchterman Reingold · gephi/gephi Wiki The Fruchterman-Reingold Algorithm is a force-directed layout algorithm. The idea of a force directed layout algorithm is to consider a force between any two nodes. In this algorithm, the nodes are represented by steel rings and the edges are springs between them. The attractive force is analogous to the spring force and the repulsive force is analogous to the electrical force. In this algorithm, the sum of the force vectors determines which direction a node should move. Reference Fruchterman, T. Source code org.gephi.layout.plugin.fruchterman.FruchtermanReingold.java Author: Mathieu Jacomy. Additional Reading Software | Manuals | Community | Plugins | Toolkit | Research
Peltier Tech Blog Constable Henry: Just a moment, sir. I know everyone in this neighborhood, but I’ve never seen your face before. Can you account for yourself? Freddy: Yes, I am Dr. by The FrankensTeam This guest post is from the E90E50 FrankensTeam, i.e., Roberto Mensa, Kris Szabó, and Gábor Madács. While I was reading Jon’s work using VBA Approaches to Plotting Gaps in Excel Charts I started to think, because I felt there had to be another solution which was waiting to be discovered… Jon provided two different VBA routines as a solution for the problem: one changes the chart series formatting, the other changes the underlying data. Some time ago I realized that it is possible to use union of ranges in chart series. Now, a few months later, thinking about the gap problem… Eureka! The union of separate ranges could be a solution, especially if we can build it up using the UDF within a named formula! Let us explain how it could work. The series formula of the chart looks like: =SERIES("ref to rng",,line_chart!