Keyphrases
- information retrieval
- natural language
- question answering
- information extraction
- language processing
- linguistic analysis
- natural language processing
- machine learning
- knowledge representation
- semantic interpretation
- information retrieval systems
- natural language interface
- text mining
- query expansion
- computational linguistics
- natural language generation
- neural network
- semantic representation
- semantic analysis
- tf idf
- information filtering
- language modeling
- document collections
- language model
- search engine
- text retrieval
- relevant documents
- term weighting
- information systems
- genetic algorithm
- database
- tasks in natural language processing