Some embodiments of the invention provide a method for propagating a first piecewise linear function (PLF), which is defined over a first state, to a second state, which is a point. In some embodiments, the space includes a set of states and a transition map that specifies a set of states that can be...http://www.google.de/patents/US6978432?utm_source=gb-gplus-sharePatent US6978432 - Method and apparatus for propagating a piecewise linear function to a point
