Keyphrases
- information retrieval
- document collections
- relevant documents
- web documents
- information retrieval systems
- text documents
- real time
- particle filter
- legal documents
- database
- information technology
- document classification
- xml documents
- kalman filter
- multimedia documents
- vector space model
- partial occlusion
- visual tracking
- keywords
- retrieval systems
- document retrieval
- metadata
- free text
- object tracking
- health care
- moving target
- mean shift
- digital documents
- information systems