In this research notes, based on a setting of online reputation system, we demonstrate various issues related to using regression discontinuity design (RD) to do causal inference, meaning to study whether for a given vendor, an increase in its online reputation score causes, instead of being associated with, an increase on its online sales. In the e-commerce platform, sellers are typically assigned into different reputation levels based on their original continuous reputation scores, resulting in discontinuity in reputation and allowing a regression discontinuity (RD) design setting. Based on data from one of the largest crowdsource website in China, we find that given everything else be the same, on average, sellers with one extra reputation level improvement enjoys a 32.5% increase in their sales. The RD required manipulation test indicates that both the density of the sales and various other shop related attributes show no discontinuity. Falsification test also indicates that the impact of reputation on sales holds only at true threshold. Further cross-sectional analysis show that the effect is stronger for seller with relative low reputation, owned by individual person, without the platform VIP membership or vendors not participating in the consumer guarantee program. This is consistent with the argument that new and unknown sellers depends more on the reputation system to improve their sales, offering further corroboration to our results.

随着数字技术的飞速发展，国际传播领域出现很多新话题、新思考。本次讲座聚焦全球传播领域的最新变化和最前沿理论，探讨数字传播可视化、社交媒体策略、数字传播等话题。

随着智能技术的快速发展，智能语音交互技术得到了较为广泛的应用。在产业应用横向拓展的同时，对智能语音交互也提出了更多的技术挑战。本报告针对任务驱动型的语音交互系统的研究现状和存在的问题进行分析，进而对目前语音交互系统研究在方法论层面上提出质疑，并指出未来可能的发展途径。

2018年正值中国改革开放40周年之际，为欧洲一体化进程奠定基础的《罗马条约》生效60周年之时，同时也是中欧建立全面战略伙伴关系15周年。为总结改革开放40年来中欧关系取得的成果，展望双方和平、增长、改革、文明伙伴关系在未来的前景和面临的挑战，深入探讨如何推动中国与欧洲在“新型大国关系”和“人类命运共同体”等理念的带动下，围绕“一带一路”倡议等设想，将双边合作提升至更高的层次，上海外国语大学、比利时欧洲学院与上海欧洲学会将于2018年10月29日举办“改革开放40周年的中国与欧洲——成就、挑战与前景”国际学术研讨会。