how to calculate the influence probability in Eq. 4

[jhljx]

When calculating the influence probability from i to j, do you average all predicted conditional probability P(j|i)？Another question is that if the dataset contains N students, do you need to average the predicted conditional probability P(j|i)？

As the DKT paper didn't explain the details for calculating Eq.4, I want to know how to calculate this influence probability.

Thanks for your response.

[lccasagrande]

You may check this, it's a great explanation that can help you through your questions.