摘要：1 import tt 2 import numpy as np 3 import random 4 import time 5 st = time.time() 6 7 def wTx(alpha, trainx, trainy): return np.dot(trainx, n... 阅读全文

摘要：>>> map(int,'0')[0]>>> int('-1')-1>>> map(int, l[1])Traceback (most recent call last): File "", line 1, in ValueError: invalid literal for int() with... 阅读全文

摘要：1 >>> l 2 '3.542485\t1.977398\t-1\r\n' 3 >>> l.split() 4 ['3.542485', '1.977398', '-1'] 5 >>> l=l.split() 6 >>> l[:2] 7 ['3.542485', '1.977398'] 8 >>... 阅读全文

摘要：1 from numpy import * 2 import random 3 import time 4 st = time.time() 5 6 def loaddata(filename): 7 fr = open(''.join([filename, '.txt']... 阅读全文

摘要：from numpy import *import timestarttime = time.time()def loadDataSet(): postingList = [['my', 'dog', 'has', 'flea', 'problems',... 阅读全文

摘要：1 ################################################## 2 # kNN : k Nearest Neighbour 3 # Author : Monne 4 # Date : 2015-01-24 5 # Email : 41660663... 阅读全文

摘要：最近学习python，记录学习的点滴。>>> import numpy as np>>> a = np.array([[1,2],[3,4]])>>> b=a.tolist()>>> b[[1, 2], [3, 4]] 阅读全文