When working with very large networks it is#R##N#typical for scientists to present a ``thinned out'' version of the#R##N#network in order to avoid the clutter of the entire network.  For#R##N#example in the hypothetical case of illustrating trading patterns#R##N#between groups of nations it might be appropriate to limit the inclusion#R##N#of inter-nation edges to all those that are significant in terms of#R##N#their weight but do not, say, associate with a country outside the#R##N#grouping.  Arising from a discussion during one of the introductory#R##N#sessions we became interested in a problem relating to the discovery of#R##N#``key events'' in a network, in terms of an ordered addition of edges to#R##N#the network.
['Patrick Healy', 'Tim Dwyer']
08191 Working Group Report -- Edge Thresholding