Struct SchedulingData

pub struct SchedulingData {
    pub interval: i32,
    pub difficulty: f32,
    pub memory_strength: f32,
    pub adjusting_factor: f32,
    pub times_reviewed: i32,
    pub times_recalled: i32,
}

Struct containing item specific data related to it’s scheduling.

Fields

interval: i32

the number of days between the last review event and the next one

difficulty: f32

numerical representation of the ‘difficulty’ of the item. More difficult items will get a larger difficulty value

memory_strength: f32

numerical representation of how well the memory of this item has established itself in the user.

adjusting_factor: f32

How the quotient between difficulty and memory strenght should be scaled. Used when the actual retention probability is not equal to the expected one.

times_reviewed: i32

how many times this card has been reviewed

times_recalled: i32

how many times this card has been reviewed successfully

Trait Implementations

impl Clone for SchedulingData

fn clone(&self) -> SchedulingData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SchedulingData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SchedulingData

fn default() -> Self

Here we want the initial ratio between the difficulty and the memory strength to be around -ln(0.9) =approx 0.1 (this results in the first interval being around 1 day) I therefore simply set the difficulty to that value, then scale both it and the memory strength by 100