Derandomized Vector Sorting

Heath, Lenwood S and Mateescu, Gabriel (1998) Derandomized Vector Sorting. Technical Report ncstrl.vatech_cs//TR-98-19, Computer Science, Virginia Polytechnic Institute and State University.

Abstract

An instance of the vector sorting problem is a sequence of k-dimensional vectors of length n. A solution to the problem is a permutation of the vectors such that in each dimension the length of the longest decreasing subsequence is O(sqrt(n)). A random permutation solves the problem. Here we derandomize the obvious probabilistic algorithm and obtain a deterministic O(kn^3.5) time algorithm that solves the vector sorting problem. We also apply the algorithm to a book embedding problem.