Naive Bayes SMS spam classification example

Naive Bayes classifier has been developed using the SMS spam collection data available at http://www.dt.fee.unicamp.br/~tiago/smsspamcollection/. In this chapter, various techniques available in NLP techniques have been discussed to preprocess prior to build the Naive Bayes model:

>>> import csv 
 
>>> smsdata = open('SMSSpamCollection.txt','r') 
>>> csv_reader = csv.reader(smsdata,delimiter='\t') 

The following sys package lines code can be used in case of any utf-8 errors encountered while using older versions of Python, or else does not necessary with the latest version of Python 3.6:

>>> import sys 
>>> reload (sys) 
>>> sys.setdefaultendocing('utf-8') 

Normal coding starts from here as usual:

>>> smsdata_data = [] 
>>> smsdata_labels = [] 
 
>>> for line in csv_reader: 
...     smsdata_labels.append(line[0]) 
...     smsdata_data.append(line[1]) 
 
>>> smsdata...