* PMML model
* @throws PatternException
*/
public MiningModel(PMML pmml) throws PatternException {
this.schema = pmml.getSchema();
this.context = new Context();
schema.parseMiningSchema(pmml
.getNodeList("/PMML/MiningModel/MiningSchema/MiningField"));
String expr = "/PMML/MiningModel/Segmentation/Segment";