Keyphrases
- information extraction
- user interface
- expert systems
- precision and recall
- user preferences
- free text
- user experience
- semi structured
- web mining
- relational learning
- user profiles
- natural language processing
- open domain
- text processing
- data extraction
- human users
- user feedback
- real time
- user satisfaction
- user model
- user defined
- relevance feedback
- end users
- database systems