*3.3.3 Social Media and Health forums mining*

A combination of supervised and unsupervised ML models (semi-supervised) was used to detect the ADRs mentioned in Twitter posts, where the unsupervised trained model to detect the drug name, while the supervised technique was to retrain the model to detect the ADRs labels [16]. Furthermore, 67172 posts are identified in the health forums, where 13600 ADRs were identified by using the supervised machine learning technique [13].
