Cross-view multi-layer perceptron for incomplete multi-view learning

Incomplete multi-view learning (IML) is an important and challenging issue. The recent popular matrix factorization methods learn the representation matrix that contains as much complete information as possible from incomplete data. However, these works focus more on mining intrinsic information from the remaining views but fail to exploit the latent and connotative consistency, complementarity, and diversity information across views simultaneously. Meanwhile, the commonly used mean completer or deleting incomplete views strategy generates high uncertainty samples. To overcome these limits, this paper presents a Cross-View Multi-Layer Perceptron (CVMLP). CVMLP integrates an auto-encoder module, cross-view classification loss, masked contrastive learning, and variance loss into a unified framework to learn IML problems. The auto-encoder and cross-view modules efficiently express consistency and diversity across views, mining structural information from within views to between views. Masked contrastive loss makes the model robust to missing views by establishing a contrastive relationship between the input and random masked data. The variance loss can reduce the uncertainty of the classification hyperplane. Extensive experiments demonstrate that CVMLP achieves superior performance.