In this paper we introduce and study the online consistent\u00a0\\(k\\)-clustering with outliers problem, generalizing the non-outlier version of the problem studied in [Lattanzi-Vassilvitskii, ICML17]. We show that a simple local-search based online algorithm can give a bicriteria constant approximation for the problem with\u00a0\\(O({k^}_2{log^}_2(nD))\\)\u00a0swaps of medians (recourse) in total, where\u00a0\\(D\\)\u00a0is the diameter of the metric. When restricted to the problem without outliers, our algorithm is simpler, deterministic and gives better approximation ratio and recourse, compared to that of [Lattanzi-Vassilvitskii, ICML17].<\/p>\n","protected":false},"excerpt":{"rendered":"
In this paper we introduce and study the online consistent\u00a0-clustering with outliers problem, generalizing the non-outlier version of the problem studied in [Lattanzi-Vassilvitskii, ICML17]. We show that a simple local-search based online algorithm can give a bicriteria constant approximation for the problem with\u00a0\u00a0swaps of medians (recourse) in total, where\u00a0\u00a0is the diameter of the metric. 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