Discrete Wavelet Transform (DWT)

class mlpy.Dwt(specdiff='rpv')

Discrete Wavelet Transform (DWT).

Initialize the Dwt class.

Input

• specdiff - [string] spectral difference method (‘rpv’, ‘arpv’, ‘crpv’)

weights(x, y)

Return ABSOLUTE feature weights.

Input

• x - [2D numpy array float] (sample x feature) training data
• y - [1D numpy array integer] (two classes, 1 and -1) classes

Output

• fw - [1D numpy array float] feature weights

[Subramani06]

P Subramani, R Sahu and S Verma. Feature selection using Haar wavelet power spectrum. In BMC Bioinformatics 2006, 7:432.