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arXiv 2104.06133cs.DS
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一种新的聚类核心集框架

A New Coreset Framework for Clustering

Vincent Cohen-Addad, David Saulpic, Chris Schwiegelshohn

摘要:

给定一个度量空间,$(k,z)$ -聚类问题包括找到$k$中心,使得距离的总和提高到每个点到其最近中心的幂$z$最小化。这概括了著名的$k$ -中位数($z=1$)和$k$ -均值($z=2$)集群问题。在过去的15年里,设计近似保留解决方案成本的数据的小空间草图(也称为\emph{coresets})一直是一个重要的研究方向。在本文中,我们提出了一个新的,简单的coreset框架,同时提高了最好的已知的各种设置的界限,范围从欧氏空间,加倍度量,小自由度量,和一般度量的情况下。

英文摘要:

Given a metric space, the $(k,z)$-clustering problem consists of finding $k$ centers such that the sum of the of distances raised to the power $z$ of every point to its closest center is minimized. This encapsulates the famous $k$-median ($z=1$) and $k$-means ($z=2$) clustering problems. Designing small-space sketches of the data that approximately preserves the cost of the solutions, also known as \emph{coresets}, has been an important research direction over the last 15 years. In this paper, we present a new, simple coreset framework that simultaneously improves upon the best known bounds for a large variety of settings, ranging from Euclidean space, doubling metric, minor-free metric, and the general metric cases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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