Patent ID: 7318005

Claim:
A computer-implemented method for decomposing input data acquired of a signal, comprising the steps of: sampling an input signal to acquire input data; representing the input data as a probability distribution, in which the probability distribution is defined as P ⁡ ( x ) = ∑ z ⁢ ⁢ P ⁡ ( z ) ⁢ ∏ j = 1 N ⁢ ⁢ P ⁡ ( x z ❘ z ) , where P(x) is an N-dimensional distribution of a random variable x=x 1 , x 2 , . . . , x N , z is a latent variable, and P(x j |z) are one-dimensional marginal distributions; and applying iteratively an expectation-maximization procedure to the probability distribution to determine components of the probability distributions; combining the components; and producing output data from the combined components, the output data approximating the input data; storing the output data in a computer-readable medium.