Keyphrases
- information retrieval
- automatic indexing
- database
- information retrieval systems
- digital libraries
- domain specific
- document indexing
- keyphrases
- keywords
- indexing scheme
- semi automatic
- fully automatic
- indexing techniques
- controlled vocabulary
- indexing method
- query expansion
- content based retrieval
- text retrieval
- document collections
- data driven
- language model
- co occurrence
- knn
- query processing
- neural network