Dimensionality Reduction: PCA, t-SNE and UMAP
Free Intermediate course · 10 lessons · 3 weeks · Certificate on completion
Compress, visualise and denoise high-dimensional data without fooling yourself. Across 10 lessons you'll move from fundamentals to a portfolio-ready outcome — at your own pace, with quizzes after each lesson and a final exam to certify your mastery.
What you'll learn
- The curse of dimensionality
- PCA from first principles
- Explained variance
- Kernel PCA
- t-SNE and its traps
- UMAP in practice
Skills you'll pick up
- The curse of dimensionality
- PCA from first principles
- Explained variance
- Kernel PCA
- t-SNE and its traps
- UMAP in practice
Tools covered
- Dimensionality Reduction
- Real-world projects
- Quizzes
- Final exam
Course modules
Module 1: The curse of dimensionality
Module 1 of Dimensionality Reduction: PCA, t-SNE and UMAP. 3 lessons · 3h
Module 2: Kernel PCA
Module 2 of Dimensionality Reduction: PCA, t-SNE and UMAP. 3 lessons · 3h
Module 3: Autoencoders for compression
Module 3 of Dimensionality Reduction: PCA, t-SNE and UMAP. 2 lessons · 2h
Module 4: Visualising embeddings
Module 4 of Dimensionality Reduction: PCA, t-SNE and UMAP. 2 lessons · 2h
Lessons in this course
- The curse of dimensionality
- PCA from first principles
- Explained variance
- Kernel PCA
- t-SNE and its traps
- UMAP in practice
- Autoencoders for compression
- Feature selection vs extraction
- Visualising embeddings
- Choosing the right method
Instructor
Elena Sokolova — Applied ML Researcher
Elena Sokolova is a Applied ML Researcher with years of hands-on experience teaching Dimensionality Reduction to thousands of learners worldwide.
Certificate
Finish every lesson and pass the final exam to earn a free, verifiable Learnera certificate for Dimensionality Reduction: PCA, t-SNE and UMAP. It can be downloaded as a PDF and shared on LinkedIn.
Career outcomes
Median global salary $118,000 per year · median India salary ₹16,52,000 per year · 73,229 open roles worldwide
- Dimensionality Reduction Specialist
- Senior Dimensionality Reduction Lead
- Dimensionality Reduction Consultant
Frequently asked questions
Is the Dimensionality Reduction: PCA, t-SNE and UMAP course free?
Yes. Every Learnera course, including Dimensionality Reduction: PCA, t-SNE and UMAP, is completely free — lessons, quizzes, the final exam, and the certificate.
How long does Dimensionality Reduction: PCA, t-SNE and UMAP take?
10 lessons, typically completed in 3 weeks at a comfortable pace.
Do I get a certificate?
Yes — pass the final exam and you receive a free, verifiable certificate you can share on LinkedIn.