Clustering-Based Summarization of Transactional Chatbot Logs (original) (raw)

2019, 2019 IEEE International Conference on Humanized Computing and Communication (HCC)

Transactional chatbots have become popular today, as they can automate repetitive transactions such as making an appointment or buying a ticket. As users interact with a chatbot, rich chat logs are generated to evaluate and improve the effectiveness of the chatbot, which is the ratio of chats that lead to a successful state such as buying a ticket. A fundamental operation to achieve such analyses is the clustering of the chats in the chat log, which requires effective distance functions between a pair of chat sessions. In this paper, we propose and compare various distance measures for individual messages as well as whole sessions. We evaluate these measures using user studies on Mechanical Turk, where we first ask users to use our chatbots, and then ask them to judge the similarity of messages and sessions. Finally, we provide anecdotal results showing that our distance functions are effective in clustering messages and sessions.

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