Keyphrases
- information extraction
- text mining
- natural language processing
- precision and recall
- free text
- web mining
- structured data
- semi structured
- information retrieval
- machine learning
- ontology based information extraction
- text documents
- named entities
- named entity recognition
- relation extraction
- open domain
- semantic tagging
- neural network
- web documents
- question answering
- text classification
- machine translation
- textual data
- artificial intelligence
- data mining
- data sets
- conditional random fields
- knowledge discovery
- expert systems
- data analysis
- natural language
- knowledge base
- feature selection
- extracting meaningful