Class  Description 

ArrayUtils 
A collection of static helper functions for dealing with arrays.

ComplexArray 
This is a wrapper class that can hold two double arrays, one of which is interpreted as containing the real values, the other
the imaginary values of the complex numbers.

ComplexNumber 
A complex number: real+sqrt(1).imag

DoubleMatrix  
DTW 
Dynamic programming to compute similarity measure

FFT  
FFTMixedRadix 
FFT for nonpoweroftwo sequences Note that, this algorithm is significantly slower than FFT.java.

FloatList 
FloatList is used to maintain a circular buffer of float values.

Hilbert 
Computes the Npoint Discrete Hilbert Transform of real valued vector x: The algorithm consists of the following stages:  X(w)
= FFT(x) is computed  H(w), DFT of a Hilbert transform filter h[n], is created: H[0]=H[N/2]=1 H[w]=2 for w=1,2,...,N/21
H[w]=0 for w=N/2+1,...,N1  x[n] and h[n] are convolved (i.e.

Histogram  
MathUtils  
PCA 
Principal component analysis solve PCA using eigenvectors decomposion and singular value decomposition (SVD).

Polynomial  
Regression 
Multiple linear regression For the case of k independent variables x_1, x_2, ...

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