一种基于Tri-training的半监督多标记学习文档分类算法

多标记学习主要用于解决因单个样本对应多个概念标记而带来的歧义性问题,而半监督多标记学习是近年来多标记学习任务中的一个新的研究方向,它试图综合利用少量的已标记样本和大量的未标记样本来提高学习性能。为了进一步挖掘未标记样本的信息和价值并将其应用于文档多标记分类问题,该文提出了一种基于Tri-training的半监督多标记学习算法(MKSMLT),该算法首先利用k近邻算法扩充已标记样本集,结合Tri-training算法训练分类器,将多标记学习问题转化为标记排序问题。实验表明,该算法能够有效提高文档分类性能。

A Tri-training Based Semi-supervised Multi-label Learning for Text Categorization

Multi-label learning is proposed to deal with the ambiguity problem in which a single sample is associated with multiple concept labels simultaneously, while the semi-supervised multi-label learning is a new research direction in recent years. To further exploit the information of unlabeled samples, a semi-supervised multi-label learning algorithm based on Tri-training(MKSMLT) is proposed. It adopts ML-kNN algorithm to get more labeled samples, then employs the Tri-training algorithm to use three classifiers to rank the unlabeled samples. Experimental results illustrate that the proposed algorithm can effectively improve the classification performance.