Math @ Duke

Publications [#235444] of Pankaj K. Agarwal
Papers Published
 Agarwal, PK; Bhattacharya, BK; Sen, S, Improved algorithms for uniform partitions of points,
Algorithmica (New York), vol. 32 no. 4
(2002),
pp. 521539
(last updated on 2018/10/21)
Abstract: We consider the following one and twodimensional bucketing problems: Given a set 5 of n points in R1 or R2 and a positive integer b, distribute the points of S into b equalsize buckets so that the maximum number of points in a bucket is minimized. Suppose at most (n/b) + Δ points lie in each bucket in an optimal solution. We present algorithms whose time complexities depend on b and Δ No prior knowledge of Δ is necessary for our algorithms. For the onedimensional problem, we give a deterministic algorithm that achieves a running time of O(b4(Δ2 + logn) + n). For the twodimensional problem, we present a Monte Carlo algorithm that runs in subquadratic time for small values of b and Δ. The previous algorithms, by Asano and Tokuyama [1], searched the entire parameterized space and required Ω (n2) time in the worst case even for constant values of b and Δ. We also present a subquadratic algorithm for the special case of the twodimensional problem when b = 2.


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