An optimized document-indexing device is based on a pruned inverted index structure mapped to hardware. The device can be accommodated on a single chip and can be reprogrammed to accommodate index structures of different lengths and support varied posting-list sizes and varied term list sizes, thus sustaining...http://www.google.fr/patents/US7533245?utm_source=gb-gplus-shareBrevet US7533245 - Hardware assisted pruned inverted index component
