Approximation Algorithms for Minimum Time Broadcast
نویسندگان
چکیده
This paper deals with the problem of broadcasting in minimum time in the telephone and message-passing models. Approximation algorithms are developed for arbitrary graphs as well as for several restricted graph classes. In particular, an O(vfvT)-additive approximation algorithm is given for broadcasting in general graphs, and an O(log n/ log log n) (multiplicative) ratio approximation is given for broadcasting in the open-path model. This also results in an algorithm for broadcasting on random graphs (in the telephone and message-passing models) that yields an O(log n/ log log n) approximation with high
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