To this end, product-related community question answering (PQA) platforms have emerged in many E-commerce sites such as Amazon and Taobao, allowing users to pose their concerns as questions and receive answers from fellow users to obtain useful product information.
similar to other community question answering (CQA) platforms, the user-provided answers on PQA platforms vary significantly on their qualities (Zhang et al., 2020b), and more seriously, their veracity due to the lack of systematic quality control (Mihaylova et al., 2018).