Keyphrases
- information extraction
- text mining
- natural language processing
- spam filtering
- named entity recognition
- free text
- precision and recall
- email messages
- textual data
- semi structured
- instant messaging
- structured data
- communication medium
- question answering
- natural language
- enron email
- spam detection
- web documents
- machine learning
- information retrieval
- mailing lists
- natural language text
- relation extraction
- named entities
- conditional random fields
- ontology based information extraction
- relational learning
- text documents
- anti spam
- stock price
- word sense disambiguation
- spam filters
- open domain
- electronic mail
- short term
- text classification