Keyphrases
- information security
- chinese text
- countermeasures
- information systems
- word segmentation
- image retrieval
- smart card
- security issues
- intrusion detection
- information security management
- security level
- network security
- smart grid
- relevance feedback
- e government
- technical issues
- information assurance
- cyber defense
- information filtering
- critical infrastructure
- databases
- n gram
- iso iec
- text retrieval
- data protection
- security risks
- cloud computing
- association rules
- information retrieval