multitest

, weights): prob = sigmoid (sum (inx*weights)) if prob > 0.5:return 1.0 else:return 0.0 D EF colictest (): Frtrain = open (' HorseColicTraining.txt '); frtest = open (' horseColicTest.txt ') trainingset = []; Traininglabels = [] for line in Frtrain.readlines (): Currline = Line.strip (). Split (' \ t ') Linearr =[] For I in range (21): Linearr.append (float (currline[i)) trainingset.append (Linearr) traininglabels.append (float (CU RRLINE[21]) Trainweights = stocGradAscent1 (

= line.strip().split('\t')53 lineArr =[]54 for i in range(21):55 lineArr.append(float(currLine[i]))56 if int(classifyVector(array(lineArr), trainWeights))!= int(currLine[21]):57 errorCount += 158 errorRate = (float(errorCount)/numTestVec)59 print "the error rate of this test is: %f" % errorRate60 return errorRate61 62 def multiTest():63 numTests = 10; errorSum=0.064 for k in range(nu

('horsecolictraining.txt ') frtest = open('horsecolictest.txt') trainingset = []; traininglabels = [] for line in frtrain. readlines (): currline = line. strip (). split ('\ t') linearr = [] For I in range (21): linearr. append (float (currline [I]) trainin Gset. append (linearr) traininglabels. append (float (currline [21]) trainweights = stocgradascent1 (trainingset, traininglabels, 500) errorcount = 0; numtestvec = 0.0 for line in frtest. readlines (): numtestvec ++ = 1.0 currline = line. str

colictest (): frtrain = open('horsecolictraining.txt ') frtest = open('horsecolictest.txt') trainingset = []; traininglabels = [] for line in frtrain. readlines (): currline = line. strip (). split ('\ t') linearr = [] For I in range (21): linearr. append (float (currline [I]) trainin Gset. append (linearr) traininglabels. append (float (currline [21]) trainweights = stocgradascent1 (trainingset, traininglabels, 500) errorcount = 0; numtestvec = 0.0 for line in frtest. readlines (): numtestvec

= Line.strip (). Split ('\ t') Linearr=[] forIinchRange (21): Linearr.append (float (currline[i)))ifInt (classifyvector (Array (Linearr), trainweights))! = Int (currline[21]): Errorcount+ = 1errorrate= (float (errorcount)/Numtestvec)Print "the error rate is:", Errorratereturnerrorratedefmultitest (): Numtests= 10; errorsum=0.0 forKinchRange (numtests): Errorsum+=colictest ()Print "The average error rate is", (Numtests, errorsum/float (numtests)) mult