Technology survey and invalidity search: A comparative study of different tasks for Japanese patent document retrieval.
Sumio FujitaPublished in: Inf. Process. Manag. (2007)
Keyphrases
- document retrieval
- information retrieval
- document collections
- inverted index
- language model
- document search
- prior art
- spreading activation
- retrieval model
- document ranking
- relevance feedback
- retrieval strategies
- patent information
- intellectual property
- cross language
- pseudo relevance feedback
- text retrieval
- query terms
- relevant documents
- document indexing
- query independent
- retrieved documents
- keyphrases
- ranking functions
- semantic search
- passage retrieval
- document level
- user queries
- digital libraries
- search queries
- learning to rank
- xml retrieval
- query expansion
- database systems
- retrieve documents
- feature selection
- databases