arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1810.03393cs.LGcs.AIstat.ML
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同时利用密度峰值与密度连通性的层次聚类

Hierarchical clustering that takes advantage of both density-peak and density-connectivity

Deakin University(迪肯大学);Nanjing University(南京大学);Monash University(莫纳什大学)

Ye Zhu, Kai Ming Ting, Yuan Jin, Maia Angelova

AI总结:

针对DP与DBSCAN两类密度聚类算法的检测缺陷,本文提出融合二者优势的DC-HDP层次聚类算法,可识别任意形状与密度的簇并生成层次化结果,在14个数据集上优于7种主流算法。

摘要:

本文聚焦于基于密度的聚类,尤其是密度峰值(Density Peak, DP)算法与基于密度连通性的DBSCAN算法,提出了一种融合二者各自优势的新型基于密度的层次聚类算法。我们首先形式化定义了DP与DBSCAN旨在检测的簇类型,进而明确了两类算法无法完整检测数据集中所有簇的分布场景。这些已识别的缺陷促使我们形式化定义了一种新的簇类型,并提出名为DC-HDP的新方法以克服上述缺陷,能够识别任意形状、密度各异的簇。此外,该新方法可生成层次结构或系统发育树形式的更丰富聚类结果,助力更好地理解簇结构。我们的实证评估结果显示,在14个数据集上,与7种当前最优的聚类算法相比,DC-HDP取得了最优的聚类效果。

英文摘要:

This paper focuses on density-based clustering, particularly the Density Peak (DP) algorithm and the one based on density-connectivity DBSCAN; and proposes a new method which takes advantage of the individual strengths of these two methods to yield a density-based hierarchical clustering algorithm. Our investigation begins with formally defining the types of clusters DP and DBSCAN are designed to detect; and then identifies the kinds of distributions that DP and DBSCAN individually fail to detect all clusters in a dataset. These identified weaknesses inspire us to formally define a new kind of clusters and propose a new method called DC-HDP to overcome these weaknesses to identify clusters with arbitrary shapes and varied densities. In addition, the new method produces a richer clustering result in terms of hierarchy or dendrogram for better cluster structures understanding. Our empirical evaluation results show that DC-HDP produces the best clustering results on 14 datasets in comparison with 7 state-of-the-art clustering algorithms.

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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