PMML Version 2.1
The Predictive Model Markup Language (PMML) is an XML-based language which
provides a way for applications to define statistical and data mining
models and to share models between PMML compliant applications.
PMML provides applications a vendor-independent method of defining
models so that proprietary issues and incompatibilities are no longer a
barrier to the exchange of models between applications. It allows users
to develop models within one vendor's application, and use other
vendors' applications to visualize, analyze, evaluate or otherwise use
the models. Previously, this was very difficult, but with PMML,
the exchange of models between compliant applications is now
Since PMML is an XML based standard, the specification comes in the
form of an XML Schema.