Metric 1-median selection: Query complexity vs. approximation ratio
Ching-Lueh Chang
所有作者
Ching-Lueh Chang
文献摘要
Consider the problem of finding a point in a metric space
({1,2,…,n},d) with the minimum average distance to other points. We
show that this problem has no deterministic o(n1+1/(h−1))-query
(2h−Ω(1))-approximation algorithms for any constant
h∈Z+∖{1}.