Intelligent Computer Aided Decision Support System

A method for generating information such as an image or speech, comprising:

• providing a storage unit storing a set of instructions, and
• a processing unit for executing said set of instructions,
• said set of instructions including a generator routine having a decoder constituted by a statistically learned model,
• said decoder being defined by an observable variable and a decoder hierarchy of a set of random variables, said decoder hierarchy constituted by layers having at least one random variable from said set of random variables in each layer,
• said observable variable, and said set of random variables being jointly distributed according to a prior probability distribution,
• said prior probability distribution being factorized having:
• a first factor defined as a first probability distribution of said observable variable conditioned on at least one random variable from said set of random variables,
• a second factor defined as a second probability distribution of the random variable of the top layer of said decoder,
• a third factor defined as the product of sequence of the probability distributions for the random variables of said set of random variables,
• the random variable of each respective element in said product of sequence being conditioned on at least two of the random variables in the higher layers,
• said method further comprising sampling a value of the random variable of the top layer, and processing said value through said hierarchy such that said information is generated.