Li, Huayi, Zhiyuan Chen, Arjun Mukherjee, Bing Liu, and Jidong Shao. 2021. “Analyzing and Detecting Opinion Spam on a Large-Scale Dataset via Temporal and Spatial Patterns”. Proceedings of the International AAAI Conference on Web and Social Media 9 (1):634-37. https://doi.org/10.1609/icwsm.v9i1.14652.