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Unsupervised Machine Learning and Recommendation Systems

This course covers advanced data science topics related to unsupervised machine learning. You will apply techniques including clustering and dimensionality reduction, then learn about the different strategies for generating personalized recommendations. The final lesson of the course covers practical advice for data scientists using unsupervised models in the real world, including how to test them both "online" and "offline". For the final project, you will build a hybrid recommendation system for data science articles.

  • Course
  • Advanced
  • 18 hours
  • Updated: Nov 3, 2025

Subscription · Monthly

  • Cancel Anytime
  • Unlimited access to hundreds of top-rated courses
  • Hands-on projects with expert feedback
  • Personalized career coaching and interview prep
  • Program Certificates

Skills you'll learn

16 skills

  • Similarity Score
  • Principal component analysis
  • Dimensionality reduction
  • Types of recommenders
  • Cluster validation

Prerequisites

9 prerequisites

Prior to enrolling, you should have the following knowledge:

  • scikit-learn
  • CRISP-DM
  • Basic calculus
  • Matrix operations
  • NumPy

You will also need to be able to communicate fluently and professionally in written and spoken English.

Course Outline

  • 5 lessons
  • 1 project

Program Instructors

3 instructors

Unlike typical professors, our instructors come from Fortune 500 and Global 2000 companies and have demonstrated leadership and expertise in their professions:

David Elliott

Data Scientist, Data Engineer

Matt Maybeno

Principal Software Engineer

Joshua Bernhard

Staff Data Scientist at Marketplace

David Elliott

Data Scientist, Data Engineer

Matt Maybeno

Principal Software Engineer

Joshua Bernhard

Staff Data Scientist at Marketplace

About this program

Take Udacity's Unsupervised Machine Learning and Recommendation Systems course and learn how to run statistically valid tests, interpret results and generate personalized recommendations based on user data.

Subscription · Monthly

  • Cancel Anytime
  • Unlimited access to hundreds of top-rated courses
  • Hands-on projects with expert feedback
  • Personalized career coaching and interview prep
  • Program Certificates

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