Journal
NEW REVIEW OF HYPERMEDIA AND MULTIMEDIA
Volume 20, Issue 1, Pages 5-23Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13614568.2013.846416
Keywords
Graph-based semisupervised learning; Imbalanced data; Label matrix normalization
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Funding
- Fundamental Research Funds for Central Universities [DUT12JR10]
- Liaoning Provincial Natural Science Foundation of China [201202032]
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Manually labeled data-sets are vital to graph-based semisupervised learning. However, in the real world, labeled data-sets are often heavily imbalanced, and the classifiers trained on such skewed data tend to show poor performance for low-frequency classes. In this paper, we deal with an imbalanced data case of semisupervised learning and propose a novel label matrix normalization solution called LMN to tackle the general imbalance problem. Experiments over different data-sets reveal the effectiveness of the devised algorithm.
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