Keyphrases
- relevance feedback
- clustering algorithm
- density distribution
- image retrieval
- query expansion
- arbitrary shape
- user feedback
- information retrieval systems
- density based clustering algorithm
- feature weighting
- data clustering
- document retrieval
- retrieval model
- knn
- hierarchical clustering
- cluster analysis
- negative feedback
- instance based learning
- pseudo relevance feedback
- information retrieval
- image segmentation
- retrieval framework
- query refinement
- high level
- high dimensional
- data points
- image search
- hierarchical structure