
Machine Learning • 191
provided for the generation of networks from search engine result
sets (six search engines are currently supported). UrlNet can also
utilize URL-based web service APIs to generate networks. Current
examples include Technorati’s Cosmos API and three types of net-
works utilizing APIs provided by the National Center for Biological
Information (NCBI).
• visone (http://visone.info/): Interactive graphical tool for manipulat-
ing, analyzing, and visualizing social networks. Analysis methods
include centrality indices, clustering, cliques, components, and cen-
tralization. Generic graph layout algorithms and tailored network
v