Invention Grant
US08271539B2 Hierarchy modification 有权
层次修改

Hierarchy modification
Abstract:
A hierarchy of nodes is created, each node being one of associated with an item retrieved according to a condition and associated with a category of information including the item. It is determined whether at least one of the nodes is redundant in the hierarchy. The at least one of the nodes is pruned from the hierarchy if the at least one of the nodes is redundant.
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