Label Correlation Propagation for Semi-supervised Multi-label Learning

TLDR: This paper proposes two different graph based transductive methods, namely, the label correlation propagation and the k-nearest neighbors based label correlation propagate, for semi-supervised multi-label learning.

Abstract: Many real world machine learning tasks suffer from the problem of scarce labeled data. In multi-label learning, each instance is associated with more than one label as in semantic scene understanding, text categorization and bio-informatics. Semi-supervised multi-label learning has attracted recent interest as gathering labeled data is both expensive and requires manual effort. Further, many of the labels have semantic correlation which manifests as co-occurrence and this information can be used to build effective classifiers in the multi-label scenario. In this paper, we propose two different graph based transductive methods, namely, the label correlation propagation and the k-nearest neighbors based label correlation propagation. Extensive experimentation on real-world datasets demonstrates the efficacy of the proposed methods and the importance of using the label correlation information in semi-supervised multi-label learning.