Automatic Construct of Communication Structures in LINE Group Chat

In recent years, communication has been conducted using various chatting tools. As the first step in analyzing communication itself, we propose a method for automatically constructing communication structures in group chats, particularly on LINE, which is widely used in Japan and other countries. First, the posts in the chat history are combined into units that represent the communication flow. Subsequently, the posts are classified into "conversation posts" and "reaction posts." A graph is constructed based on the content and interval of the posts, in which the posts are the nodes and appropriate connections are made between them. Considering a work-related group chat, we confirmed that the structure of the graph automatically constructed using the proposed method is similar to that of the manually constructed graph.