Keyphrases
- heterogeneous environments
- federated search
- resource selection
- web search
- result merging
- digital libraries
- web services
- ranked list
- hierarchical peer to peer networks
- search engine
- relevant documents
- user queries
- information sources
- distributed information retrieval
- multilingual information retrieval
- query expansion
- search result
- computing platform
- peer to peer networks
- document ranking
- databases
- keywords
- multimedia
- information retrieval
- relevance feedback