arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1406.4754cs.DBcs.IR
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增量式DBSCAN聚类算法的分析与研究

Analysis and Study of Incremental DBSCAN Clustering Algorithm

Sanjay Chakraborty, N. K. Nagwani

摘要:

本文描述了基于密度的聚类的增量行为。重点介绍了基于密度的噪声应用空间聚类算法(DBSCAN)及其增量方法,DBSCAN算法基于密度的聚类概念,在噪声空间数据库中发现任意形状的聚类,增量方法将DBSCAN算法应用于数据更新频繁的动态数据库中,并在此基础上提出了一种基于密度的噪声应用空间聚类算法。在对动态数据库进行插入或删除操作之后,必须更新DBSCAN发现的聚类。DBSCAN算法通过直接计算新数据进入到已有聚类中的数据来度量新聚类,而不是重新运行算法,最终发现新的更新聚类和离群点,从而描述了在原始数据库中增量变化的百分比下,实际DBSCAN算法和增量DBSCAN算法的行为是相同的,DBSCAN算法被广泛应用于大型多维数据库的维护,如数据仓库。

英文摘要:

This paper describes the incremental behaviours of Density based clustering. It specially focuses on the Density Based Spatial Clustering of Applications with Noise (DBSCAN) algorithm and its incremental approach.DBSCAN relies on a density based notion of clusters.It discovers clusters of arbitrary shapes in spatial databases with noise.In incremental approach, the DBSCAN algorithm is applied to a dynamic database where the data may be frequently updated. After insertions or deletions to the dynamic database, the clustering discovered by DBSCAN has to be updated. And we measure the new cluster by directly compute the new data entering into the existing clusters instead of rerunning the algorithm.It finally discovers new updated clusters and outliers as well.Thus it describes at what percent of delta change in the original database the actual and incremental DBSCAN algorithms behave like same.DBSCAN is widely used in those situations where large multidimensional databases are maintained such as Data Warehouse.

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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