Building a Spam Filter with Naive Bayes
- Guided Project
- 1.4 hours
- Intermediate
- Python
Practice using the Naive Bayes algorithm in Python to build a spam filter and classify SMS messages.
Overview
In this project, you'll take on the role of a data scientist tasked with building an SMS spam filter using the multinomial Naive Bayes algorithm. You'll work with a real-world dataset to clean and prepare text data, calculate probabilities, and train the algorithm to classify messages as spam or ham.
This hands-on project allows you to apply your knowledge of conditional probability and Naive Bayes to solve a practical problem. You'll strengthen your skills in data preparation, probability calculations, and implementing machine learning algorithms in Python. The project will be a valuable addition to your portfolio, demonstrating your ability to build a functional spam filter.
**Objective:** Use the multinomial Naive Bayes algorithm to create an SMS spam filter in Python, developing your machine learning skills with a practical application.
What You'll Learn
- ✓ Create a spam filter using multinomial Naive Bayes
- ✓ Expand your portfolio using conditional probability and Naive Bayes
- ✓ Employ conditional probability concepts
Before You Start
- ✓ Assigning probabilities based on specific conditions
- ✓ Updating probabilities using prior knowledge
- ✓ Employing Naive Bayes for spam filter classification
- ✓ Applying the multinomial Naive Bayes algorithm
Project Steps
10 steps
- 1 Exploring the Dataset
- 2 Training and Test Set
- 3 Letter Case and Punctuation
- 4 Creating the Vocabulary
- 5 The Final Training Set
- 6 Calculating Constants First
- 7 Calculating Parameters
- 8 Classifying A New Message
- 9 Measuring the Spam Filter's Accuracy
- 10 Next Steps
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