Title
Bisections Of Two Sets Of Points In The Plane Lattice
Abstract
Assume that 2m red points and 2n blue points are given on the lattice Z(2) in the plane R-2. We show that if they are in general position, that is, if at most one point lies on each vertical line and horizontal line, then there exists a rectangular cut that bisects both red points and blue points. Moreover, if they are not in general position, namely if some vertical and horizontal lines may contain more than one point, then there exists a semi-rectangular cut that bisects both red points and blue points. We also show that these results are best possible in some sense. Moreover, our proof gives O(N log N), N = 2m + 2n, time algorithm for finding the desired cut.
Year
DOI
Venue
2009
10.1587/transfun.E92.A.502
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Keywords
Field
DocType
red point, blue point, lattice, bisector, rectangular cut, semi-rectangular cut, two sets of points
Linear separability,Horizontal and vertical,General position,Combinatorics,Lattice (order),Horizontal line test,Geometry,Time complexity,Mathematics
Journal
Volume
Issue
ISSN
E92A
2
1745-1337
Citations 
PageRank 
References 
1
0.39
3
Authors
3
Name
Order
Citations
PageRank
Miyuki Uno1102.19
Tomoharu Kawano210.39
Mikio Kano354899.79