This paper introduces a purposed Location-based Recommender System (LBRS) that combines sentiment analysis and topic modelling techniques to improve user profiling for enhancing recommendations of Points of Interest (POIs). Using additional feature extraction, we built user profiles from a Foursquare dataset to evaluate our model and provide recommendations based on user opinions toward venues. Our combined model performed favourably against the baseline models, with an overall improved accuracy of 0.67. The limitations were the use of one dataset and that user profiles were constructed using predicted emotions extracted as features from review data with topic modelling, rather than literal user emotions. Nevertheless, this provides a step forward in user profile and emotion scoring, contributing further to the development of LBRS in the Tourism domain.
Keywords: Location-based recommender system; Foursquare; sentiment analysis; topic modelling; venue recommendation; places of interest
本文介绍了一种基于位置的推荐系统(LBRS),该系统结合情感分析和主题建模技术去改进用户画像,从而提高兴趣点(POIs)推荐。通过提取其它特征,我们从Foursquare数据集构建了用户配置文件以充实该模型,并根据用户对地点的意见提供建议。与基线模型相比,该组合模型表现良好,总体精度提高至0.67。本文的局限性在于只使用了一个数据集并且用户的配置文件是利用预测情绪构建的。作为一种特征,这些情绪是从主题建模的用户反馈数据中提取出来的,而不是直观意义上的用户情绪。然而,这款组合模型在用户配置文件与情感评分方面奠定了基础,进一步推进了旅游业领域中LBRS的应用发展。
关键词:基于位置的推荐系统,Foursquare, 情感分析,主题建模,场地推荐,兴趣点