Python realizes "Ebbinghaus" Memory curve table __python

Herman Aibin (Hermann ebbinghaus 1850.1.24~1909.2.26), German psychologist .

1, review the principle

Interval: 20 minutes 1 hours 8 hours 1 days 2 days 6 days 31 days

Re-learning saving reading time percentages: 58.2 44.2 35.8 33.7 27.8 25.4 21.1

2, review the point of determination

People's memory cycle is divided into short-term memory and long-term memory two kinds.

The first memory cycle is 5 minutes.

The second memory cycle is 30 minutes.

The third memory cycle is 12 hours.

These three memory cycles belong to the category of short-term memory.

Here are some of the more important cycles.

The fourth memory cycle is 1 days.

The fifth memory cycle is 2 days.

The sixth memory cycle is 4 days.

The seventh memory cycle is 7 days.

The eighth memory cycle is 15 days.

The above 8 cycles apply to the back lexical, as a large back word of the circulation of 8 review points, can maximize the efficiency of the word back

3. My own point of time

I chose a more regular point of time as my own memory point:

5 minutes 30 minutes 12 hours 1 days 2 days 4 days 8 days 16 days

5 minutes and 30 minutes are realized in one memory, and it takes more than 30 minutes to memorize a word unit.

The 16-day review will be more efficient, flexible and therefore no longer mandatory memory plan.

Therefore, the final memory point is:

Now 0.5 days 1 days 2 days 4 days 8 days (total memory Review 6 times to complete the memory of the unit)

4. Python implementation

The

    time module, list structure, dict structure, and the logical branch structure of for, while, if.

Import time LISTNUM = 20 # unit Total wordlist = [[] for I in range (LISTNUM + 1)] # unit 1th to 4th for J in Range (1,5): # Start At time: "Aug": 2010-8-26 21:00 t = time.mktime (Time.strptime ("Aug", "%y%b%d%H")) # print ' = = Wordlist ', j, ' = = = ' t + = 60*60*12* (j-1) for i in [0, 0.5, 1, 2, 4, 8]: T + = 60*60*24*i c = time.ctime (t) p = TIME.STRP Time (c) s = Time.strftime ("%y-%b-%d%H", p) wordlist[j].append (s) # print S # 5th to unit 8th for J in range (5, 9): # STA RT at time: "Aug": 2010-8-30 21:00 t = time.mktime (Time.strptime ("Aug", "%y%b%d%H")) # print ' = = = Wordlist ', j, ' = = = ' t + = 60*60*12* (j-5) for i in [0, 0.5, 1, 2, 4, 8]: T + = 60*60*24*i c = time.ctime (t) p = Time.st Rptime (c) s = Time.strftime ("%y-%b-%d%H", p) wordlist[j].append (s) # print S # 9th to unit 20th for J in range (9, LISTNUM + 1: # Start at time: "Sep": 2010-9-01 21:00 t = time.mktime (Time.strptime ("Aug", "%y%b%d%H") ) # print ' = = Wordlist', j, ' = = = ' t + = 60*60*12* (j-5) for i in [0, 0.5, 1, 2, 4, 8]: T + = 60*60*24*i c = time.ctime (t) p = time.strptime (c) s = Time.strftime ("%y-%b-%d%H", p) wordlist[j].append (s) # print S # time point as key to build dictionary storage structure J = 1 timedict = {} while J <= Listnum:for listtime in wordlist[j]: if Listtime not in timedict:timedict[listtime] = [j] else:timedict[Listtime ].append (j) j = 1 # print ' = = Timedict = = ' # print Timedict # store "Ebbinghaus" schedule in chronological order timelist = [] for i in Timedict.keys (): t = time.mktime (Time.strptime (i, "%y-%b-%d%H")) Timelist.append (t) timelist.sort () for I in Range (Len (timeli ST): c = Time.ctime (Timelist[i]) p = time.strptime (c) s = Time.strftime ("%y-%b-%d%H", p) timelist[i] = s # print ' = = = Timelist = = ' # print Timelist # print "Ebbinghaus" Memory schedule for J in timelist:print ' = = ', j, ' = = ' temp = Timedict[j by chronological order For i in Temp:print ' wordlist ', I

The output results are:

>>> = = 2010-aug-26 = = = Wordlist 1 = 2010-aug-27 = = = wordlist 1 wordlist 2 ... # omit ... # omitting ... # omit = = 20 10-aug-29 = = = Wordlist 3 = 2010-aug-29 = = Wordlist 4 = 2010-aug-30 = = Wordlist 1 = 2010-aug-30 = = Wor Dlist 2 wordlist 5 = 2010-aug-31 3 = = wordlist wordlist 5 wordlist 6 = 2010-aug-31 = = wordlist 4 wordlist 6 Wo Rdlist 7 = = 2010-sep-01 = = wordlist 5 wordlist 7 wordlist 8 = = 2010-sep-01 = = Wordlist 6 wordlist 8 wordlist 9 ... ... # omit ... # omit = = 2010-sep-21-Wordlist = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = St = = = 2010-sep-22 = = Wordlist >>>