as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
name 4 techniques used for natural language processing.
user
four techniques used for natural language processing are: 
1. machine translation 
2. text classification 
3. named entity recognition 
4. information extraction
assistant