Keyphrases
- hierarchical structure
- hierarchical organization
- hierarchical clustering
- hierarchical structures
- hierarchically organized
- databases
- topic hierarchy
- data clustering
- concept hierarchy
- high cost
- coarse to fine
- class hierarchy
- clustering algorithm
- data sets
- hierarchical decomposition
- hierarchical classification
- hierarchical tree
- database
- chemical structures
- minimum cost
- cluster analysis
- optimal policy
- scheduling problem
- data points
- evolutionary algorithm
- lower bound
- search algorithm
- multiscale
- real time