Staged mixture modeling

A staged mixture model generation system, comprising:

• a mixture model including a plurality of mixture components each having an associated mixture weight;
• an initial added mixture component and weight provider that provides an added mixture component having an initial structure, initial parameters and an initial associated mixture weight;
• a mixture component modifier that modifies the added mixture component based, at least in part, upon a case that is undesirably addressed by the plurality of mixture components using an SEM algorithm to modify the structure and at least one of the parameters and associated mixture weight of the added mixture component.

A method for learning a mixture model, comprising:

• sequentially adding new mixture components to the mixture model, the new mixture components corresponding to cases that are undesirably addressed by existing mixture components of the mixture model;
• and,
• employing an SEM algorithm to modify the structure and parameters of the new mixture components and, optionally, their weights.

A staged method for constructing a mixture model, comprising:

• at least one stage, adding an initial component to the mixture model with a pre-specified initial mixture weight;
• and,
• employing a structural expectation maximization algorithm to modify the mixture model and the added initial component and initial mixture weight.

A data packet transmitted between two or more computer components that facilitates data modeling, the data packet comprising:

• a mixture model having at least one added mixture component modified based, at least in part, upon a case that was undesirably addressed by a plurality of mixture components of the mixture model using an SEM algorithm to modify the structure and at least one of the parameters and associated mixture weight of the added mixture component.

A computer readable medium storing computer executable components of a staged mixture model, comprising:

• a plurality of mixture components each having an associated mixture weight;
• and,
• at least one added mixture component having been modified based, at least in part, upon a case that is undesirably addressed by the plurality of mixture components using an SEM algorithm to modify the structure and at least one of the parameters and associated mixture weight of the added mixture component.

A staged mixture model generation system, comprising:

• means for providing an added mixture component to the mixture model;
• means for modifying the added mixture component based, at least in part, upon a case that is undesirably addressed by a plurality of mixture components using an SEM algorithm to modify the structure and at least one of the parameters and associated mixture weight of the added mixture component.