Social networking (online) Electronic commerce 3 Social media 3 Affect analysis 1 Artificial intelligence 1 Buffer amplifiers 1 C++ (programming language) 1 Chinese Internet 1 Chinese internets 1 Content providers 1 Crime 1 E- commerces 1 E-commerce 1 Electronic transaction 1 Emoticon 1 Feature vector extraction 1 Fraud 1 Home-based 1 Information systems 1 Instagram 1 Learning systems 1 Machine learning methods 1 Natural experiment 1 News 1 Non-verbal communications 1 On-line social networks 1 Online social networks 1 Optical character recognition 1 Outages 1 Pictorial representation 1