Computer Intelligent Tutoring System “SQLTOR”
Ievgen Vagin, Olena Havrylenko, Juan Pablo Martínez Bastida, Andrey Gregorevich Chukhray · 2019
Intelligent tutoring systems are required in different spheres, especially in IT. The presented system “SQLTOR” provides supporting tools for teachers and an adaptive tutoring approach for SQL students as well. Tutoring course in SQLTOR consists of task sequences ordered by complexity. Clustering and or- dering are automatically performed based on student’s degree of mastery of the relevant knowledge components in the learning domain. Thus, course structure allows gradually increase or decrease tasks complexity during tutoring process. SQLTOR provides hints which depend on learner's mistakes and the task content. Hints are automatically generated based on comparison of a student’s SQL query with the referred one or are manually customized. The structure of SQLTOR, task grouping (clustering), ordering methods, SQLTOR tutoring modes and its behavior when a student makes mistakes are also described in this paper. As a conclusion, testing results from a group of students at National Aerospace Uni- versity “Kharkiv Aviation Institute” are provided.