# coding=utf-8 ?from numpy import *def loadDataSet(): ? ?? ? postingList = [['my', 'dog', 'has', 'flea', 'problems', 'help', 'please'], ? ?? ? ['maybe', 'not', 'take', 'him', 'to', 'dog', 'park', 'stupid'], ??? ? ['my', 'dalmation', 'is', 'so', 'cute', 'I', 'love', 'him'], ??? ? ['stop', 'posting', 'stupid', 'worthless', 'garbage'], ? ?? ? ['mr', 'licks', 'ate', 'my', 'steak', 'how', 'to', 'stop', 'him'], ??? ? ['quit', 'buying', 'worthless', 'dog', 'food', 'stupid']] ? ?? ? classVec = [0, 1, 0, 1, 0, 1] ?# 1代表侮辱性文字，0代表正常言論 ??? ? return postingList, classVec ??? ??def createVocabList(dataSet): ??? ? vocabSet = set([]) ? ?? ? for document in dataSet: ? ?? ? ? ? vocabSet = vocabSet | set(document) ??? ? return list(vocabSet) ?? ? ?def setOfWords2Vec(vocabList, inputSet): ??? ? returnVec = [0] * len(vocabList) ??? ? for word in inputSet: ??? ? ? ? if word in vocabList: ? ?? ? ? ? ? ? returnVec[vocabList.index(word)] = 1 ??? ? ? ? else:print "the word: %s is not in my Vocabulary!" % word ??? ? return returnVec? def trainNB0(trainMatrix, trainCategory): ??? ? numTrainDocs = len(trainMatrix) ?? numWords = len(trainMatrix[0]) ? ?? ? pAbusive = sum(trainCategory) / float(numTrainDocs) ?? ? p0Num = zeros(numWords); p1Num = zeros(numWords) ??? ? p0Denom = 0.0; p1Denom = 0.0?? ? for i in range(numTrainDocs): ??? ? ? ? if trainCategory[i] == 1: ??? ? ? ? ? ? p1Num += trainMatrix[i] ? ?? ? ? ? ? ? p1Denom += sum(trainMatrix[i]) ??? ? ? ? else: ? ?? ? ? ? ? ? p0Num += trainMatrix[i] ? ?? ? ? ? ? ? p0Denom += sum(trainMatrix[i]) ??? ? p1Vect = p1Num / p1Denom? ? p0Vect = p0Num / p0Denom?? ? return p0Vect, p1Vect, pAbusive