While pursuing his doctoral degree at the
National University of Ireland, Wei Cui studied under Professor Michael O’Neill
and Professor Anthony Brabazon, top scientists in the field of artificial
intelligence and evolutionary computing in the world. After returning to China,
Dr. Cui joined an education company, Yixue Education, as its chief scientist.
Dr. Cui developed the first AI-powered
adaptive learning system for K-12 students in China. The system provides
personalized education. It intelligently diagnoses gaps in students’ knowledge
and provides customized learning solutions by recommending suitable learning
content and planning optimal learning paths to maximize learning efficiency.
Its diagnosis method efficiently and precisely assesses students' weaknesses
and areas that require improvement. For example, a diagnosis that involves 5000
knowledge points requires students to answer about 200 questions, which allows
the learning tool to identify areas in which the student is struggling. During
the learning process, it continuously evaluates students’ skill levels and
proficiencies in real time and adjusts subsequent learning content accordingly.
The techniques used to develop the
system include bayesian network, bayesian knowledge tracing, information
theory, machine learning, graph theory, knowledge space theory, genetic
algorithm, neural network, and fuzzy logic. Rigorous experiments have shown
that this system was more effective than human teachers. The results of these
experiments have been published as academic papers and presented at
international conferences including AIED (International Conference on
Artificial Intelligence in Education), CSEDU (International Conference on
Computer Supported Education) and AERA (American Educational Research
Association) Annual Meeting. Nearly two million students across
300 cities in China have benefitted from the program and over 80% of students have improved their performance
after using the system for one semester.