画记忆曲线

[linonetwo]

Is your feature request related to a problem? Please describe.

画类似这样的笔记内总的记忆曲线

Describe the solution you'd like

基于 stability 和 elapsed_days ，每日启动时计算并记录一个数据点。

Describe alternatives you've considered

也可以简单地有复习就随便加点值，没复习就随便减点儿值，就是不准了

Additional context

看了 https://www.zhihu.com/question/331786825/answer/3202873044 想搞一个

[oflg]

可以试试