varunon9 / naive-bayes-classifier

Implementing Naive Bayes Classification algorithm into PHP to classify given text as ham or spam. This application uses MySql as database.

Naive Bayes Classifier

Implementing Naive Bayes Classification algorithm into PHP to classify given text as ham or spam using MySql database.

How to use

<?php

    require_once('NaiveBayesClassifier.php');

    $classifier = new NaiveBayesClassifier();
    $spam = Category::$SPAM;
    $ham = Category::$HAM;

    $classifier -> train('Have a pleasurable stay! Get up to 30% off + Flat 20% Cashback on Oyo Room' . 
            ' bookings done via Paytm', $spam);
    $classifier -> train('Lets Talk Fashion! Get flat 40% Cashback on Backpacks, Watches, Perfumes,' .
            ' Sunglasses & more', $spam);

    $classifier -> train('Opportunity with Product firm for Fullstack | Backend | Frontend- Bangalore', $ham);
    $classifier -> train('Javascript Developer, Fullstack Developer in Bangalore- Urgent Requirement', $ham);

    $category = $classifier -> classify('Scan Paytm QR Code to Pay & Win 100% Cashback');
    echo $category; // spam
    
    $category = $classifier -> classify('Re: Applying for Fullstack Developer');
    echo $category; // ham

?>

How to install the project-

1. Download the project and extract zip.

2. Create database in MySql-

   1. mysql> create database naiveBayes;
   2. mysql> use naiveBayes;
   3. mysql> create table trainingSet (S_NO integer primary key auto_increment, document text, category varchar(255));
   4. mysql> create table wordFrequency (S_NO integer primary key auto_increment, word varchar(255), count integer, category varchar(255));

3. Open a terminal and move to project folder

4. Edit database connection info in db_connect.php file

5. Execute main.php php main.php

Database Schema

Blog

https://medium.com/@varunon9/classify-emails-into-ham-and-spam-using-naive-bayes-classifier-ffddd7faa1ef

For any bug/mistake you can create github issue. Contact [e-mail] for suggestion/query.