Active-Learning a Convex Body in Low Dimensions
Active-Learning a Convex Body in Low Dimensions
复制标题
主动学习低维凸体
DOI:
10.1007/s00453-021-00807-w
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发表时间:
2021
期刊:
影响因子:
1.1
通讯作者:
Rahul, Saladi
中科院分区:
文献类型:
--
作者:
Har-Peled, Sariel;Jones, Mitchell;Rahul, Saladi
Consider a set P ⊆ R^ d P⊆ R d of n points, and a convex body C C provided via a separation oracle. The task at hand is to decide for each point of P P if it is in C C using the fewest number of oracle queries. We show that one can solve this problem in two and three dimensions using queries, where is the size of the largest subset of points of P P in convex position. In 2D, we provide an algorithm that efficiently generates these adaptive queries. Furthermore, we show that in two dimensions one can solve this problem using oracle queries, where is a lower bound on the minimum number of queries that any algorithm for this specific instance requires. Finally, we consider other variations on the problem, such as using the fewest number of queries to decide if C C contains all points of P P. As an application of the above, we show that the discrete geometric median of a point set P in R^ 2 R 2 can be computed in expected time.
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DOI:
10.1109/coase.2013.6653995
发表时间:
2013
期刊:
2013 IEEE International Conference on Automation Science and Engineering (CASE)
影响因子:
--
作者:
S. Panahi;Aviv Adler;A.F. van der Stappen;Ken Goldberg
通讯作者:
Ken Goldberg
影响因子:
1
作者:
Elchanan Mossel;Allan Sly
通讯作者:
Allan Sly
影响因子:
1
作者:
J. Matoušek
通讯作者:
J. Matoušek
影响因子:
1.1
作者:
A. Kupavskii
通讯作者:
A. Kupavskii
DOI:
10.1145/3555985
发表时间:
2018
期刊:
2018 IEEE 59th Annual Symposium on Foundations of Computer Science (FOCS)
影响因子:
--
作者:
Natan Rubin
通讯作者:
Natan Rubin