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"Welcome to Gephi! Gephi is an open-source software for visualizing and analysing large networks graphs. Gephi uses a 3D render engine to display graphs in real-time and speed up the exploration. You can use it to explore, analyse, spatialise, filter, cluterize, manipulate and export all types of graphs. "

These algorithms use graph theory to calculate the importance of any given node in a network. They cut through noisy data, revealing parts of the network that need attention - but they all work differently. Each measure has its own definition of 'importance', so you need to understand how they work to find the best one for your graph visualization applications.

The Center for American Progress held a forum on economic growth and equality. After opening remarks from Vanessa Cárdenas and Angela Glover Blackwell, members of the first panel talked about the link between economic growth and equality. Economist Emmanuel Saez in his presentation used graphs to show the relationship between equitable distribution of wealth and economic growth.

We face an entangled communications challenge. Becoming a sustainable city is less a technological issue than one of mindset, understanding and behavioural. Too many people still believe there is no problem. How can this be overcome? Do we approach it by engendering fear, cajoling, or persuasion? By providing evidence of the threats or examples of good practices? Do we jolt people into focus by ascending graphs of problems or imagery of iconic events like Katrina or Superstorm Sandy? It is best to show how the shift is doable and already happening and that those at the forefront have a better life economically and socially. The image of the sustainable city needs to feel as emotionally satisfying as the lure of consumer culture.

This is our topic for today: the way things move and spread, somewhat chaotically, across a network. Some examples to whet the appetite: Infectious diseases jumping from host to host within a population Memes spreading across a follower graph on social media A wildfire breaking out across a landscape Ideas and practices diffusing through a culture Neutrons cascading through a hunk of enriched uranium