Keyphrases
- text summarization
- named entity recognition
- natural language processing
- information extraction
- question answering
- multi document summarization
- automatic summarization
- extractive summarization
- text segments
- query expansion
- document structure
- automatic text summarization
- temporal expressions
- keyword extraction
- text mining
- text classification
- probabilistic model
- hidden markov models
- prior knowledge
- training set
- search engine
- lexical chains
- artificial intelligence
- data mining