EndCold: An End-to-End Framework for Cold Question Routing in Community Question Answering Services

EndCold: An End-to-End Framework for Cold Question Routing in Community Question Answering Services

Jiankai Sun, Jie Zhao, Huan Sun, Srinivasan Parthasarathy

Proceedings of the Twenty-Ninth International Joint Conference on Artificial Intelligence
Main track. Pages 3244-3250. https://doi.org/10.24963/ijcai.2020/449

Routing newly posted questions (a.k.a cold questions) to potential answerers with suitable expertise in Community Question Answering sites (CQAs) is an important and challenging task. The existing methods either focus only on embedding the graph structural information and are less effective for newly posted questions, or adopt manually engineered feature vectors that are not as representative as the graph embedding methods. Therefore, we propose to address the challenge of leveraging heterogeneous graph and textual information for cold question routing by designing an end-to-end framework that jointly learns CQA node embeddings and finds best answerers for cold questions. We conducted extensive experiments to confirm the usefulness of incorporating the textual information from question tags and demonstrate that an end-2-end framework can achieve promising performances on routing newly posted questions asked by both existing users and newly registered users.
Keywords:
Machine Learning: Recommender Systems
Data Mining: Mining Graphs, Semi Structured Data, Complex Data
Machine Learning Applications: Applications of Supervised Learning
Data Mining: Mining Text, Web, Social Media