Keyphrases
- document retrieval
- image retrieval
- image registration
- shape retrieval
- information retrieval
- affine transformation
- structured documents
- affine invariant
- training phase
- retrieval method
- image database
- information retrieval systems
- databases
- average precision
- text retrieval
- retrieval model
- test collection
- query expansion
- relevance feedback
- neural network
- similarity retrieval
- retrieval systems
- retrieval framework
- multimedia information
- learning phase
- data sets
- retrieval accuracy
- metadata
- digital libraries
- xml documents
- probabilistic model
- multimedia databases
- convex hull