A method and system of providing an interactive user interface for a user to specify one or more familial relationships between regions includes inputting, by the user, a network model including one or relationships within at least one of the regions and/or across at least two of the regions. The user...http://www.google.com.tw/patents/US6009257?utm_source=gb-gplus-share專利 US6009257 - Computer system and computer implemented method for generating, displaying and simulating a hierarchical model having cross-branch connections using multiplicity trees
