Importance ranking for a hierarchical collection of objects
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United States of America Patent
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Oct 5, 2010
Grant Date -
Dec 24, 2009
app pub date -
May 2, 2006
filing date -
May 2, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method of obtaining an importance ranking for a hierarchical collection of objects. The hierarchical collection of objects is represented as a tree containing a plurality of nodes, and each node to be ranked is represented as a respective leaf node of the tree. To obtain the ranking of the respective leaf nodes, the system and method locally ranks nodes contained in one or more sub-trees of the tree, in which each sub-tree has a depth equal to one. Next, the local rankings are effectively propagated up the tree, and the local rankings are aggregated at each level of the hierarchy, until a final importance ranking for the leaf nodes is obtained.
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