20120078821 | METHODS FOR UNSUPERVISED LEARNING USING OPTIONAL POLYA TREE AND BAYESIAN INFERENCE - The present disclosure describes an extension of the Pólya Tree approach for constructing distributions on the space of probability measures. By using optional stopping and optional choice of splitting variables, the present invention gives rise to random measures that are absolutely continuous with piecewise smooth densities on partitions that can adapt to fit the data. The resulting optional Pólya tree distribution has large support in total variation topology, and yields posterior distributions that are also optional Pólya trees with computable parameter values. | 03-29-2012 |