Keyphrases
- information retrieval
- clustering algorithm
- information retrieval systems
- search engine
- data clustering
- retrieval effectiveness
- cluster analysis
- document corpus
- hierarchical clustering
- document collections
- query expansion
- text mining
- test collection
- relevance feedback
- data points
- learning to rank
- vector space model
- information filtering
- inter cluster
- language model
- document retrieval
- text retrieval
- feature selection
- language processing
- term weighting
- data mining