Abstract
In this paper,a semi-supervised canonical correlation analysis algorithm called Semi-CCA is developed, which uses supervision information in the form of pair-wise constraints in canonical correlation analysis (CCA).In this setting,besides abundant unlabeled data examples,the domain knowledge in the form of pair-wise constraints which specify whether a pair of data examples belongs to the same class (must-link constraints) or not (cannot-link constraints) is also available.Meanwhile,the relative importance of must-link constraints and cannot-link constraints is validated.Experimental results on the artificial dataset,multiple feature database and facial database including Yale and AR show that the proposed Semi-CCA can effectively enhance the classifier performance by using only a small amount of supervision information.
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