There is provided a method for providing a function for use in detecting a presence of an exception in multidimensional data. The method comprises the steps of (a) partitioning the multidimensional data into at least a first region and a second region; (b) assigning a first region-specific function to...http://www.google.com.hk/patents/US6687690?utm_source=gb-gplus-share專利 US6687690 - Employing a combined function for exception exploration in multidimensional data
