The impact on retrieval effectiveness of skewed frequency distributions.
Mark SandersonC. J. van RijsbergenPublished in: ACM Trans. Inf. Syst. (1999)
Keyphrases
- retrieval effectiveness
- test collection
- information retrieval systems
- query expansion
- retrieval model
- information retrieval
- average precision
- relevant documents
- query terms
- highly skewed
- pseudo relevance feedback
- retrieval process
- relevance feedback
- database
- relevance judgments
- retrieved documents
- retrieval strategies
- term dependencies
- query difficulty
- trec test collections
- retrieval efficiency
- document collections
- co occurrence
- query performance prediction
- ranked retrieval
- language model
- relevance scores
- improvements in retrieval effectiveness