Improved Classification of Alzheimer's Disease Data via Removal of Nuisance Variability
Figure 2
Left hippocampus volume is used as the classification feature and age and gender as nuisance features. A: Original data (zero mean for visualization). B: Data corrected for age. C: Data corrected for age and gender. D: Probability distributions (Parzen widowing) for all three data. Lines visualize the linear fits for each group.