This paper describes a real world deployment of a context-aware mobile app
recommender system (RS) called Frappe. Utilizing a hybrid-approach, we
conducted a large-scale app market deployment with 1000 Android users combined
with a small-scale local user study involving 33 users. The resulting usage
logs and subjective feedback enabled us to gather key insights into (1)
context-dependent app usage and (2) the perceptions and experiences of
end-users while interacting with context-aware mobile app recommendations.
While Frappe performs very well based on usage-centric evaluation metrics
insights from the small-scale study reveal some negative user experiences. Our
results point to a number of actionable lessons learned specifically related to
designing, deploying and evaluating mobile context-aware RS in-the-wild with
real users.

该研究描述了一个名为 Frappe 的上下文感知移动应用推荐系统的实际部署，并结合了 1000 名安卓用户和 33 名本地用户进行了大规模应用市场部署与小规模本地用户研究。研究结果发现了上下文相关的应用使用和终端用户与上下文感知移动应用推荐互动时的感受与体验，并且从小规模研究中揭示了一些负面的用户体验。结果指出在真实用户中设计、部署和评估移动上下文感知推荐系统的一些创新性教训。