Optimal Binary Space Partitions in the Plane
Optimal Binary Space Partitions in the Plane
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DOI:
10.1007/978-3-642-14031-0_25
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发表时间:
2010-07
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通讯作者:
M. D. Berg;Amirali Khosravi
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文献类型:
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作者:
M. D. Berg;Amirali Khosravi
An optimalbspfor a setSof disjoint line segments in the plane is abspforSthat produces the minimum number of cuts. We study optimalbspsfor three classes ofbsps, which differ in the splitting lines that can be used when partitioning a set of fragments in the recursive partitioning process:freebspscan use any splitting line,restrictedbspscan only use splitting lines through pairs of fragment endpoints, andauto-partitionscan only use splitting lines containing a fragment. We obtain the two following results:It isnp-hard to decide whether a given set of segments admits an auto-partition that does not make any cuts.An optimal restrictedbspmakes at most 2 times as many cuts as an optimal freebspfor the same set of segments.