1. An interactive data mining method comprises the steps of: a) Input a presentable knowledge model wherein the presentable knowledge model is an enhanced regulation tree deriving and storing additional statistics at each node; b) Perform rule viewing of a terminal node in the presentable knowledge model by a parallel coordinate visualization technique that maps a multiple dimensional space onto two display dimensions and at least one data item is presented as a polygonal line wherein the path from the root node through non-terminal nodes toward a terminal node is presented and the weight of a sample is highlighted by the thickness of the line.