The Places of Our Lives: Visiting Patterns and Automatic Labeling from Longitudinal Smartphone Data
2014-03-28 21:23
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文章分析用户的地理访问历史记录,给出用户的行为模式,最后给出一种对位置贴标签的机制。
数据集:文献[15]的,114个用户长达18个月的,来自两个大学的学生和老师的记录。
用户访问的特征:
每个用户总共访问了多少个地点?
每个地点被访问了多少次?
人们访问新地点的比例?
个人信息(性别、年龄、职业)对用户行为模式的影响。
访问记录的时间分布。
地点的被访问特征:
地点都有哪些category?
地点被访问的时间分布。
文章主要考虑了10个category:Home、Friend-Home、Work/School等。
运用机器学习的分类算法给地点贴category,主要思路:考虑多个特征,对训练集进行特征萃取,然后对测试集进行预测。关键在于特征的选取。本文考虑了如下四方面特征:
1)移动特征(地点的访问频率、单次持续时间、总时间、周内时间分布)
2)应用使用(用户在访问每个地点时,都使用那些应用)
3)蓝牙使用(用户在访问每个地点时,蓝牙使用时间)
4)WiFi使用(用户在访问每个地点时,WiFi使用时间)
自我感想:这个研究思路不错,想借鉴。
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