Keyphrases
- sparse sampling
- information retrieval
- high dimensional
- information retrieval systems
- image retrieval
- query expansion
- retrieval method
- retrieval systems
- relevance feedback
- efficient retrieval
- real world
- compressive sensing
- sparse data
- random sampling
- image database
- query formulation
- test collection
- shape retrieval
- measurement noise
- dense sampling
- content based retrieval
- text retrieval
- random projections
- retrieval model
- sampling algorithm
- document retrieval
- structured queries
- sparse matrix