Keyphrases
- linguistic analysis
- natural language
- text retrieval
- syntactic analysis
- natural language processing
- learning environment
- free text
- e learning
- text mining
- database
- textual data
- learning materials
- syntactic categories
- semantic analysis
- key concepts
- information retrieval
- text documents
- web documents
- xml documents
- learning process
- natural language text
- string matching
- natural language generation
- keywords
- natural language sentences
- natural language parsing
- machine learning