Collaborative community-specific microblog sentiment analysis via multi-task learning

Xiaomei Zou, Jing Yang, Wei Zhang, Hongyu Han

Abstract: Highlights•Using two sociological theories to extract social contexts of microblogs.•Building a community-specific sentiment analysis model based on multi-task learning.•Computing and incorporating community similarity as regularization over the model.•Using social context regularization to share sentiment between connected microblogs.•Optimizing the model based on a fast iterative shrinkage-thresholding algorithm.