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