indiejade writes: "To the Big Node: little node Department Creating a unique functional mapping of the Internet, one that plots topography as well as function, was the goal of researchers at the Bar Ilan University in Israel. Their findings rank nodes according to efficiency. "The increased use of peer-to-peer communications could improve the overall capacity of the Internet and make it run much more smoothly," their study concluded.
The mapping, which was based on data from the assistance of 5,000 online volunteers, was published in a recent issue of the Proceedings of the National Academy of Sciences magazine.""A dense core of 80 or so critical nodes surrounded by an outer shell of 5,000 sparsely connected, isolated nodes that are very much dependent upon this core. Separating the core from the outer shell are approximately 15,000 peer-connected and self-sufficient nodes. Take away the core, and an interesting thing happens: about 30 percent of the nodes from the outer shell become completely cut off. . . . Three distinct regions are apparent: an inner core of highly connected nodes, an outer periphery of isolated networks, and a mantle-like mass of peer-connected nodes. The bigger the node, the more connections it has."