Potential reasons for ionospheric anomalies immediately prior to China's Wenchuan earthquake on 12 May 2008 detected by nonlinear principal component analysis.
Jyh-Woei LinPublished in: Int. J. Appl. Earth Obs. Geoinformation (2012)
Keyphrases
- principal component analysis
- anomaly detection
- kernel pca
- dimensionality reduction
- principal components
- independent component analysis
- prior knowledge
- kernel principal component analysis
- covariance matrix
- high order
- training procedure
- root cause
- hong kong
- prior information
- machine learning
- low dimensional
- least squares
- feature space
- feature extraction
- image sequences