1. A method of associating queries of a query log that lists a plurality of queries and a plurality of clicked uniform resource locators (URL), the plurality of clicked URLs including a set of one or more clicked URLs for each query of the plurality of queries, comprising: designating each query of the plurality of queries to be a node of a plurality of nodes; determining a plurality of edges, including designating a URL to be an edge for a pair of queries if the URL is indicated as clicked in a set of clicked URLs for a first query of the pair and in a set of clicked URLs for a second query of the pair; and displaying the plurality of nodes and the plurality of edges in a graph.