基于Tri-Training和数据剪辑的半监督聚类算法

提出一种半监督聚类算法,该算法在用seeds集初始化聚类中心前,利用半监督分类方法Tri-training的迭代训练过程对无标记数据进行标记,并加入seeds集以扩大规模;同时,在Tri-training训练过程中结合基于最近邻规则的Depuration数据剪辑技术对seeds集扩大过程中产生的误标记噪声数据进行修正、净化,以提高seeds集质量.实验结果表明,所提出的基于Tri-training和数据剪辑的DE-Tri-training半监督聚类新算法能够有效改善seeds集对聚类中心的初始化效果,提高聚类性能.

Tri-Training and Data Editing Based Semi-Supervised Clustering Algorithm

In this paper, a algorithm named DE-Tri-training semi-supervised K-means is proposed, which could get a seeds set of larger scale and less noise. In detail, prior to using the seeds set to initialize cluster centroids, the training process of a semi-supervised classification approach named Tri-training is used to label unlabeled data and add them into the initial seeds set to enlarge the scale. Meanwhile, to improve the quality of the enlarged seeds set, a nearest neighbor rule based data editing technique named Depuration is introduced into Tri-training process to eliminate and correct the mislabeled noise data in the enlarged seeds. Experimental results show that the novel semi-supervised clustering algorithm could effectively improve the cluster centroids initialization and enhance clustering performance.