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Hajizadeh, S. (author), Nunez, Alfredo (author), Tax, D.M.J. (author)Rail defect detection by video cameras has recently gained much attention in both<br/>academia and industry. Rail image data has two properties. It is highly imbalanced towards the non-defective class and it has a large number of unlabeled data samples available for semisupervised learning techniques. In this paper we investigate if positive...conference paper 2016