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arXiv 2103.14376cs.LG
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基于网络知识的几何仿射传播聚类算法

Geometric Affinity Propagation for Clustering with Network Knowledge

Texas A&M University(德克萨斯农工大学)

Omar Maddouri, Xiaoning Qian, Byung-Jun Yoon

摘要:

将数据聚类成有意义的子集是科学数据分析中的一项主要任务。迄今为止,各种策略,从基于模型的方法,以数据驱动的计划,已被设计为高效和准确的聚类。一类重要的聚类方法,是一个特别感兴趣的是类基于样本的方法。这种兴趣主要源于这些样本中编码的压缩信息量,这些样本有效地反映了相应聚类的主要特征。亲和传播(AP)已被证明是一个强大的基于样本的方法,通过迭代的成对消息更新来细化最佳样本集。然而,一个关键的限制是它无法利用已知的数据点之间的网络关系,往往可用于各种科学数据集。为了缓解这一缺点,我们提出了几何AP,一种新的聚类算法,有效地扩展AP利用网络拓扑结构。Geometric-AP遵守网络约束,并使用最大和信念传播来利用可用的网络拓扑在网络上生成平滑的聚类。广泛的性能评估显示,一个显着的增强质量的聚类结果相比,基准聚类方案。特别是,我们证明了几何AP执行非常好,即使在原始AP彻底失败的情况下。

英文摘要:

Clustering data into meaningful subsets is a major task in scientific data analysis. To date, various strategies ranging from model-based approaches to data-driven schemes, have been devised for efficient and accurate clustering. One important class of clustering methods that is of a particular interest is the class of exemplar-based approaches. This interest primarily stems from the amount of compressed information encoded in these exemplars that effectively reflect the major characteristics of the respective clusters. Affinity propagation (AP) has proven to be a powerful exemplar-based approach that refines the set of optimal exemplars by iterative pairwise message updates. However, a critical limitation is its inability to capitalize on known networked relations between data points often available for various scientific datasets. To mitigate this shortcoming, we propose geometric-AP, a novel clustering algorithm that effectively extends AP to take advantage of the network topology. Geometric-AP obeys network constraints and uses max-sum belief propagation to leverage the available network topology for generating smooth clusters over the network. Extensive performance assessment reveals a significant enhancement in the quality of the clustering results when compared to benchmark clustering schemes. Especially, we demonstrate that geometric-AP performs extremely well even in cases where the original AP fails drastically.

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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