Learning random points from geometric graphs or orderings
Learning random points from geometric graphs or orderings
复制标题
从几何图形或排序中学习随机点
DOI:
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发表时间:
2018
期刊:
影响因子:
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通讯作者:
D. Mitsche
中科院分区:
文献类型:
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作者:
J. Díaz;C. McDiarmid;D. Mitsche
Let Xv for v∈V be a family of n iid uniform points in the square ?n=−n/2,n/22 . Suppose first that we are given the random geometric graph G∈G(n,r) , where vertices u and v are adjacent when the Euclidean distance dE(Xu,Xv) is at most r. Let n3/14≪r≪n1/2. Given G (without geometric information), in polynomial time we can with high probability approximately reconstruct the hidden embedding, in the sense that “up to symmetries,” for each vertex v we find a point within distance about r of Xv; that is, we find an embedding with “displacement” at most about r. Now suppose that, instead of G we are given, for each vertex v, the ordering of the other vertices by increasing Euclidean distance from v. Then, with high probability, in polynomial time we can find an embedding with displacement O(logn) .
影响因子:
1.1
作者:
Arias-Castro, Ery;Channarond, Antoine;Pelletier, Bruno;Verzelen, Nicolas
通讯作者:
Verzelen, Nicolas