Geometric Pattern Matching Reduces to k -SUM
Geometric Pattern Matching Reduces to k -SUM
复制标题
几何图案匹配简化为 k -SUM
DOI:
10.1007/s00454-021-00324-1
复制
发表时间:
2021
影响因子:
0.8
通讯作者:
Cardinal, Jean
中科院分区:
文献类型:
--
作者:
Aronov, Boris;Cardinal, Jean
We prove that some exact geometric pattern matching problems reduce in linear time tok-SUMwhen the pattern has a fixed sizek. This holds in the real RAM model for searching for a similar copy of a set ofpoints within a set ofnpoints in the plane, and for searching for an affine image of a set ofpoints within a set ofnpoints ind-space. As corollaries, we obtain improved real RAM algorithms and decision trees for the two problems. In particular, they can be solved by algebraic decision trees of near-linear height.