This paper reports on progress towards building an online language learning tool to provide learners with conversational experience by using dialog systems as conversation practice partners. Our system can adapt to users' language proficiency on the fly. We also provide automatic grammar error feedback to help users learn from their mistakes. According to our first adopters, our system is entertaining and useful. Furthermore, we will provide the learning technology community a large-scale conversation dataset on language learning and grammar correction. Our next step is to make our system more adaptive to user profile information by using reinforcement learning algorithms.

翻译：本文报告了在建立在线语言学习工具,通过使用对话系统作为对话实践伙伴,为学习者提供谈话经验方面取得的进展。我们的系统可以适应用户的远程语言熟练程度。 我们还提供了自动语法错误反馈,以帮助用户从错误中学习。根据我们的第一批采用者,我们的系统既有趣又有用。此外,我们将向学习技术界提供语言学习和语法校正方面的大规模对话数据集。我们的下一步是利用强化学习算法,使我们的系统更适应用户概况信息。