Keyphrases
- peer to peer
- database
- query processing
- query expansion
- query evaluation
- response time
- database queries
- user queries
- overlay network
- user defined
- data structure
- relevance feedback
- vector space
- query routing
- resource discovery
- efficient retrieval
- complex queries
- query formulation
- boolean queries
- super peer
- query terms
- communication cost
- client server
- web search
- search engine
- information retrieval