A recommender system uses information about known associations between users and items to compute for a given user an ordered recommendation list of items which this user might be interested inâ€¦ (More)

A strategy is used by a participant in a persuasion dialogue to select from the possible locutions it may make, one which is most likely to achieve its objective of persuading its opponent. Suchâ€¦ (More)

Sampling from large graphs is an area which is of great interest, particularly with the recent emergence of huge structures such as Online Social Networks. These often contain hundreds of millions ofâ€¦ (More)

We develop a fast method for finding all high degree vertices of a connected graph with a power law degree sequence. The method uses a biassed random walk, where the bias is a function of the powerâ€¦ (More)

Sampling from large graphs is an area of great interest, especially since the emergence of huge structures such as Online Social Networks and the World Wide Web (WWW). The large scale properties of aâ€¦ (More)

We study the use of random walks as an efficient estimator of global properties of large undirected graphs, for example the number of edges, vertices, triangles, and generally, the number of smallâ€¦ (More)