“…(6) 100 students were randomly selected, and 0-10, 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80-90, and 90-100 were used as the predicted scoring interval, and exercises were recommended for these 100 students. For each predicted scoring interval, perform one round of steps ( 7), (8), and ( 9). ( 7) For each student who needs to recommend exercises, feedforward neural network is used to calculate the expected score of each problem for the student, and the exercises with the expected score within the specified range are recommended to the student.…”