Multi-Turn Response Selection in Retrieval Based Chatbots with Hierarchical Residual Matching Network
Zhuo Zhang, Danyang Zheng, Ping Gong · Journal of Physics Conference Series · 2021
Abstract Response selection in retrieval-based chatbot aims to find the most relevant response in a candidate repository given the conversation context. A key technique to this task lies in how to measure the matching degree between conversation context and response at rich semantic information. In this paper, we propose a hierarchical residual matching network (HRMN) to fully extract and make use of the rich semantic information in the conversation history and response for themulti-turn response selection task. We empirically verify HRMN on two benchmark data sets and compare against advanced approaches. Evaluation results demonstrate that HRMN outperforms strong baselines and has a distinct improvement in response selection.