An index data structure has a plurality of index keys for uniquely identifying potential data object context nodes. Each index key is, in turn, associated with one or more potential context nodes. Moreover, the index key has a label that provides semantic content to a user. The index data structure further...http://www.google.fr/patents/US7664742?utm_source=gb-gplus-shareBrevet US7664742 - Index data structure for a peer-to-peer network
