半监督聚类综述

Survey of Semi-supervised Clustering

半监督聚类是结合半监督学习与聚类分析而提出的新的学习方法,其在机器学习中得到了广泛的重视和应用。传统无监督聚类算法在划分数据时并不需要任何数据属性,但在实际应用中,存在少量带有独立类标签或成对约束的监督信息的数据样本,学者们致力于将这些为数不多的监督信息运用于聚类,以得到更优的聚类结果,从而提出了半监督聚类。文中主要介绍了半监督聚类的理论基础和算法思想,并对半监督聚类的最新研究进展进行了综述。首先,对半监督学习的研究现状和分类进行了概述,并将生成式半监督学习、半监督SVM、基于图的半监督学习和协同训练这4种分类方法进行了对比;其次,针对半监督学习的聚类进行了详细的描述,并对4种典型半监督聚类算法(Cop-Kmeans算法、LCop-Kmeans算法、Seeded-Kmeans算法和SC-Kmeans算法)的算法思想进行了分析和总结,同时对这4种算法的优缺点进行了评价;然后,按照基于约束的半监督聚类和基于距离的半监督聚类两种情况,分别对半监督聚类的研究现状进行了阐述;最后,探讨了半监督聚类在生物信息学、图像分割以及计算机其他领域内的应用以及未来的研究方向。文中旨在使初学者能够快速了解半监督聚类的进展,理解典型的算法思想,并在之后的实际应用中能起到一定的指导作用。

Semi-supervised clustering is a new learning method combining semi-supervised learning and clustering analysis,and it has been used widely in machine learning.The traditional unsupervised clustering algorithms do not need any data attributes when dividing data,but in practical applications,there are a small number of data samples for supervised information with independent class labels or paired constraints,so scholars are committed to applying these few supervised information into clustering to obtain better clustering results,thus proposing semi-supervised clustering.This paper mainly introduced the theoretical basis and algorithm ideas of semi-supervised clustering,and summarized the latest progress of semi-supervised clustering.Firstly,the current situation and classification of semi-supervised learning were reviewed,and the generative semi-supervised learning,semi-supervised SVM,semi-supervised learning based on graph and collaborative training were compared.Secondly,the clustering of semi-supervised learning was described in detail,four typical semi-supervised clustering algorithms (Cop-Kemans algorithm,LCop-Kmeans algorithm,Seeded-Kmeans algorithm and SC-Kmeans algorithm) were analyzed and summarized,and their advantages and disadvantages were eva- luated .Then,according to the two situations of semi-supervised clustering based on constraints and the semi-supervised clustering based on distance,the research status of semi-supervised clustering was expounded respectively.Finally,the applications of semi-supervised clustering in bioinformatics,image segmentation and other fields of computer and the future research directions were discussed.This paper aims to enable beginners to quickly know about the progress of semi-supervised clustering and understand the typical algorithm ideas,and it can play a guiding role in actual applications afterwards.