Departamento de Sistemas, Universidad Autónoma Metropolitana, Azcapotzalco 02200, Mexico.
Centro Universitario UAEM Valle de México, Universidad Autónoma del Estado de México, Atizapán 54500, Mexico.
Sensors (Basel). 2019 Apr 3;19(7):1605. doi: 10.3390/s19071605.
Motivated by the importance of studying the relationship between habits of students and their academic performance, daily activities of undergraduate participants have been tracked with smartwatches and smartphones. Smartwatches collect data together with an Android application that interacts with the users who provide the labeling of their own activities. The tracked activities include eating, running, sleeping, classroom-session, exam, job, homework, transportation, watching TV-Series, and reading. The collected data were stored in a server for activity recognition with supervised machine learning algorithms. The methodology for the concept proof includes the extraction of features with the discrete wavelet transform from gyroscope and accelerometer signals to improve the classification accuracy. The results of activity recognition with Random Forest were satisfactory (86.9%) and support the relationship between smartwatch sensor signals and daily-living activities of students which opens the possibility for developing future experiments with automatic activity-labeling, and so forth to facilitate activity pattern recognition to propose a recommendation system to enhance the academic performance of each student.
受研究学生习惯与其学习成绩之间关系重要性的启发,使用智能手表和智能手机跟踪了本科生的日常活动。智能手表与一个与用户交互的 Android 应用程序一起收集数据,用户为自己的活动提供标签。跟踪的活动包括进食、跑步、睡觉、上课、考试、工作、家庭作业、交通、观看电视剧和阅读。收集的数据存储在服务器中,以便使用监督机器学习算法进行活动识别。概念验证的方法包括从陀螺仪和加速度计信号中提取特征,使用离散小波变换来提高分类准确性。随机森林的活动识别结果令人满意(86.9%),支持智能手表传感器信号与学生日常生活活动之间的关系,这为开发未来带有自动活动标记的实验以及其他方面提供了可能性,以促进活动模式识别,提出建议系统来提高每个学生的学习成绩。