Having deadlines for a set of cards

[Aryan3212]

I wanted to know how one could implement a deadline feature for an app. I'm currently building relearnify.com based upon FSRS, and wanted to make a deadline/exam features.

Let's say someone has an exam on Jan 10 and it's Jan 1 today. How would I make it so that for each card in that deck has a review date within those 10 days. Or always within that time interval.

My initial idea is this. I'll normalize the review date like this:

real_fsrs_value = 157
normalized_value_with_deadline = 10 * (2 / math.pi) * math.atan(157)  # approximately 9.89

This way the value will never reach the deadline, in this case, which is 10 from when I started reviewing.

[L-M-Sherlock]

FSRS is not designed for that. But you can normalize the interval in that way.