李琳DASFAA2016出访报告
李琳老师的论文““Modeling User Mobility via User Psychological and Geographical Behaviors towards Point of Interest Recommendation”(基于用户心理和地理位置的用户移动特性建模及POI推荐研究)被DASFAA2016录用并应邀做口头报告。
李琳老师于2016年4月16日-2016年4月19日出席在美国新德洲达拉斯举办的DASFAA2016会议(数据库系统高级应用国际学术会议)。 DASFAA是中国计算机学会推荐的数据库领域B类会议(CCF B)。会议每年在世界不同地方召开,与会者讨论数据库系统和应用领域的研究和发展。议题包括数据库系统、Web应用、大数据、数据挖掘、推荐系统、信息检索等多个。
论文摘要如下:
The pervasive employments of Location-based Social Network call for precise and personalized Point-of-Interest (POI) recommendation to predict which places the users prefer. Modeling user mobility, as an important component of understanding user preference, plays an essential role in POI recommendation. However, existing methods mainly model user mobility through analyzing the check-in data and formulating a distribution without considering why a user checks in at a specific place from psychological perspective. In this paper, we propose a POI recommendation algorithm modeling user mobility by considering check-in data and geographical information. Specifically, with check-in data, we propose a novel probabilistic latent factor model to formulate user psychological behavior from the perspective of utility theory, which could help reveal the inner information underlying the comparative choice behaviors of users. Geographical behavior of all the historical check-ins captured by a power law distribution is then combined with probabilistic latent factor model to form the POI recommendation algorithm. Extensive evaluation experiments conducted on two real-world datasets confirm the superiority of our approach over state-of-the-art methods.
计算机学院
2016年4月27日