vim-sm2

Spaced Repetition Algorithm

Tip	If you like vim-sm2 and want to share the W00t!, I’m grateful for tips or beverages.

vim-sm2 is the original SuperMemo-2 algorithm for spaced repetition, written in 100% pure VimL.

Install

vim-sm2 is plugin manager agnostic. I recommend pathogen if you haven’t already got a preference.

Dependencies

vim-sm2 uses md5#md5 if you have it installed, but will get by without it if you don’t.

Usage

Give vim-sm2 a datafile and the interval multiplier (expressed in seconds) that you want to use. The original SM2 algorithm was based on day intervals (86400 seconds) which is good for knowledge based learning. Use hours (3600 seconds) for more frequent revision sessions which is better for skills.

let srs = SM2_SRS('data.srs', 3600)

Create new revisionable records:

let id = srs.new()

Optionally with your own id

call srs.new(some_id)

Collect the due records:

let due_ids = srs.due()

Iterate these, collect the user response (grade — a 1-5 response) and update the records:

for id in due_ids
  call show_challenge(id)
  let grade = input("How'd you go, sport? (1=dismal, 5=awesome): ")
  call srs.repetition(id, grade)
endfor