关键词: 校园行为信息网络, 异构信息网络, 学生行为分析, 元路径, 相似学生搜索

Abstract: It is important to keep track of both the psychological and academic status of students in campus. Generally, student data covers a wide range of kinds such as students’ interests, hobbies, and lifestyles, and these data can be collected via smart devices such as student e-cards by many campuses. With the rapid development of new generation of information technology, in recent years, researchers have explored novel ways to improve the quality of talent cultivation by utilizing the student data, such as applying big data analysis on the data to discover subtle but meaningful information as the guidance for better student management. Among such research, search of students with similar lifestyles can exert positive effect on the improvement of student management, as potential and insightful information can be found and may further provide some warnings for students at an early stage if anything unusual is found. Existing algorithms for searching students with similar lifestyle have two deficiencies. Firstly, they cannot explain the similarities between students because related semantic information is lost in the searching process. Secondly, they fail to integrate multiple data sources, while the student behavioral data is growing dynamically and only using one dataset may lead to biased results. To break these limitations, we first propose the concept of campus behavior information network to represent student behaviors in campus. Next, based on the constructed campus behavior information network, an algorithm named SCALE is proposed for similar campus lifestyle mining. SCALE calculates the student similarity by specific meta-paths with constraints. SCALE is strong and unique, not only in keeping the similarity semantics of the original data, but also in extensively integrating multiple data sources in a scalable way while retaining the original results of calculation. Due to the large scale of datasets, parallel strategy is further designed and applied to SCALE for the sake of efficiency. Through extensive experiments on real campus behavior datasets, the effectiveness and execution efficiency of the SCALE are verified.

Key words: campus behavior information network, heterogeneous information network, student behavior analysis, meta path, similar student search