SugarMemo Rating算法

變量說明:
Bn, 第N次按鈕選擇, Bn = Fail/Pass/Bingo
{noRating, Bingo, Pass, Fail} = {0, 1, 2, 3)
我傾向于
{noRating, Fail, Pass, Bingo} = {0, 1, 2, 3)

ts.1, ts.firstRating 的簡(jiǎn)寫, ts.1 = Fail/Pass/Bingo
ts.2, ts.secondRating 的簡(jiǎn)寫, ts.2 = Fail/Pass/Bingo
ts.1 記錄復(fù)習(xí)的第一次Bn
ts.2 記錄復(fù)習(xí)的第一次之后的Bn中最小的一次

現(xiàn)有規(guī)則, Bn = Pass/Bingo, 則退出復(fù)習(xí), 同時(shí)進(jìn)行 Rating
由于復(fù)習(xí)可以選模式,使得Rating的判斷相對(duì)復(fù)雜, 并且還有多選模式

考慮最簡(jiǎn)單的情況, 只有一種復(fù)習(xí), 比如說回想釋義
這種情況下 Bn = Pass/Bingo 的時(shí)候, 就只有 ts.1, 不會(huì)有 ts.2
這時(shí), 現(xiàn)有的Rating模式實(shí)際上只可能Rating成 B,C
這應(yīng)該來說不太合理

我來說說我的想法, 應(yīng)該主要依據(jù) ts.1 來判斷
ts.1 = Bingo, Rate = A
ts.1 = Pass,  Rate = B

totalFail = 1
ts.1 = Fail, ts.2 = Bingo, Rate = B
ts.1 = Fail, ts.2 = Pass,  Rate = C

totalFail = 2
ts.1 = Fail, ts.2 = Bingo, Rate = C
ts.1 = Fail, ts.2 = Pass,  Rate = D

totalFail > 2 and totalFail < MAXFAIL
ts.1 = Fail, ts.2 = Bingo, Rate = D
ts.1 = Fail, ts.2 = Pass,  Rate = E

totalFail >= MAXFAIL
ts.1 = Fail, ts.2 = Bingo, Rate = F
ts.1 = Fail, ts.2 = Pass,  Rate = F

再考慮稍微復(fù)雜一點(diǎn)的情況, 回想釋義