The management and mining of multiple predictive models using the predictive modeling markup language

We introduce a markup language based upon XML for working with the predicti ve models produced by data mining systems. The language is called the predi ctive model markup language (PMML) and can be used to define predictive mod els and ensembles of predictive models. It provides a flexible mechanism fo r defining schema for predictive models and supports model selection and mo del averaging, involving multiple predictive models. It has proved useful f or applications requiring ensemble learning, partitioned learning and distr ibuted learning. In addition, it facilitates moving predictive models acros s applications and systems. (C) 1999 Elsevier Science B.V. All rights reser ved.