Discriminative learning for Alzheimer's disease diagnosis via canonical correlation analysis and multimodal fusion

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To address the challenging task of diagnosing neurodegenerative brain disease, such as Alzheimer's disease (AD) and mild cognitive impairment (MCI), we propose a novel method using discriminative feature learning and canonical correlation analysis (CCA) in this paper. Specifically, multimodal features and their CCA projections are concatenated together to represent each subject, and hence both individual and shared information of AD disease are captured. A discriminative learning with multilayer feature hierarchy is designed to further improve performance. Also, hybrid representation is proposed to maximally explore data from multiple modalities. A novel normalization method is devised to tackle the intra- and inter-subject variations from the multimodal data. Based on our extensive experiments, our method achieves an accuracy of 96.93% [AD vs. normal control (NC)], 86.57 % (MCI vs. NC), and 82.75% [MCI converter (MCI-C) vs. MCI non-converter (MCI-NC)], respectively, which outperforms the state-of-the-art methods in the literature.




Lei, B., Chen, S., Ni, D., & Wang, T. (2016). Discriminative learning for Alzheimer’s disease diagnosis via canonical correlation analysis and multimodal fusion. Frontiers in Aging Neuroscience, 8(MAY). https://doi.org/10.3389/fnagi.2016.00077

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