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A deep understanding of deep learning (with Python intro) (Udemy.com)

Master deep learning in PyTorch using an experimental scientific approach, with lots of examples and practice problems.

Created by: Mike X Cohen

Last updated August 2026

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What you will learn

  • The theory and math underlying deep learning
  • How to build artificial neural networks
  • Architectures of feedforward and convolutional networks
  • Building models in PyTorch
  • The calculus and code of gradient descent
  • Fine-tuning deep network models
  • Learn Python from scratch (no prior coding experience necessary)
  • How and why autoencoders work
  • How to use transfer learning
  • Improving model performance using regularization
  • Optimizing weight initializations
  • Understand image convolution using predefined and learned kernels
  • Whether deep learning models are understandable or mysterious black-boxes!
  • Using GPUs for deep learning (much faster than CPUs!)

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Overall Score : 96 / 100

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Course Description

Deep learning is increasingly dominating technology and has major implications for society.

From self-driving cars to medical diagnoses, from face recognition to deep fakes, and from language translation to music generation, deep learning is spreading like wildfire throughout all areas of modern technology.

But deep learning is not only about super-fancy, cutting-edge, highly sophisticated applications. Deep learning is increasingly becoming a standard tool in machine-learning, data science, and statistics. Deep learning is used by small startups for data mining and dimension reduction, by governments for detecting tax evasion, and by scientists for detecting patterns in their research data.

Deep learning is now used in most areas of technology, business, and entertainment. And it's becoming more important every year.


How does deep learning work?

Deep learning is built on a really simple principle: Take a super-simple algorithm (weighted sum and nonlinearity), and repeat it many many times until the result is an incredibly complex and sophisticated learned representation of the data.

Is it really that simple? mmm OK, it's actually a tiny bit more complicated than that ;)   but that's the core idea, and everything else -- literally everything else in deep learning -- is just clever ways of putting together these fundamental building blocks. That doesn't mean the deep neural networks are trivial to understand: there are important architectural differences between feedforward networks, convolutional networks, and recurrent networks.

Given the diversity of deep learning model designs, parameters, and applications, you can only learn deep learning -- I mean, really learn deep learning, not just have superficial knowledge from a youtube video -- by having an experienced teacher guide you through the math, implementations, and reasoning. And of course, you need to have lots of hands-on examples and practice problems to work through. Deep learning is basically just applied math, and, as everyone knows, math is not a spectator sport!


What is this course all about?

Simply put: The purpose of this course is to provide a deep-dive into deep learning. You will gain flexible, fundamental, and lasting expertise on deep learning. You will have a deep understanding of the fundamental concepts in deep learning, so that you will be able to learn new topics and trends that emerge in the future.

Please note: This is not a course for someone who wants a quick overview of deep learning with a few solved examples. Instead, this course is designed for people who really want to understand how and why deep learning works; when and how to select metaparameters like optimizers, normalizations, and learning rates; how to evaluate the performance of deep neural network models; and how to modify and adapt existing models to solve new problems.


You can learn everything about deep learning in this course.

In this course, you will learn

  • Theory: Why are deep learning models built the way they are?

  • Math: What are the formulas and mechanisms of deep learning?

  • Implementation: How are deep learning models actually constructed in Python (using the PyTorch library)?

  • Intuition: Why is this or that metaparameter the right choice? How to interpret the effects of regularization? etc.

  • Python: If you're completely new to Python, go through the 8+ hour coding tutorial appendix. If you're already a knowledgeable coder, then you'll still learn some new tricks and code optimizations.

  • Google-colab: Colab is an amazing online tool for running Python code, simulations, and heavy computations using Google's cloud services. No need to install anything on your computer.


Unique aspects of this course

  • Clear and comprehensible explanations of concepts in deep learning, including transfer learning, generative modeling, convolutional neural networks, feedforward networks, generative adversarial networks (GAN), and more.

  • Several distinct explanations of the same ideas, which is a proven technique for learning.

  • Visualizations using graphs, numbers, and spaces that provide intuition of artificial neural networks.

  • LOTS of exercises, projects, code-challenges, suggestions for exploring the code. You learn best by doing it yourself!

  • Active Q&A forum where you can ask questions, get feedback, and contribute to the community.

  • 8+ hour Python tutorial. That means you don't need to master Python before enrolling in this course.


So what are you waiting for??

Watch the course introductory video and free sample videos to learn more about the contents of this course and about my teaching style. If you are unsure if this course is right for you and want to learn more, feel free to contact with me questions before you sign up.

I hope to see you soon in the course!

Mike

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Instructor Details

Mike X Cohen

I am a full-time educator and writer, and former professor of neuroscience. I "retired" from that position so I could focus my time and energy creating high-quality educational material just for you.

I have 20 years of experience teaching programming, data analysis, signal processing, statistics, linear algebra, and experiment design. I've taught undergraduate students, PhD candidates, postdoctoral researchers, and full professors. I have taught in "traditional" university courses, special week-long intensive courses, and Nobel prize-winning research labs. I have >100 hours of online lectures on neuroscience data analysis that you can find on my website and youtube channel. And I've written several technical books about these topics with a few more on the way.

I'm not trying to show off -- I'm trying to convince you that you've come to the right place to maximize your learning from an instructor who has spent two decades refining and perfecting his teaching style.

Over 350,000 students have watched over 50,000,000 minutes of my courses. Come find out why!

I have several free courses that you can enroll in. Try them out! You got nothing to lose ;)

                                                  -------------------------

By popular request, here are suggested course progressions for various educational goals:

MATLAB programming: Get Started with MATLAB; Master MATLAB; Image Processing

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Reviews

4.8

6,559 ratings on Udemy

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By Volker Koster on 6/25/2026

Udemy is asking quite early for feedback, which I usually decline. Not this time. After only a few lectures and some playing around with the Jupyter Notebooks its obvious that this stuff is outstanding. If it were a book you would call it a page-turner - very hard to put down. Thank you so much Mike X Cohen for the incredible amount of work you put into this.

By Edoardo G. on 5/9/2026

Amazing course! As alway with Mike's :) The balance between theory and practice is just perfect. The many code challenges and exercises are a lovely feature, and nicely allow to learn by doing. Another great feature is the progressive build up of knowledge. The course starts from the very basic atoms of DL, and exponentially grows into more complicated applications. In the end, even the more complicated applications just look for what they really are, nice tricks and smart ways of putting the basic building blocks together.

By Surja Gain on 4/13/2026

A fascinating course on Deep Learning. Learning a lot about the subject from this course which is helpful in many ways, theoretical and practical. All of Mike X Cohen's course are fantastic and top rate.

By Marcos Paulo Alves Pereira on 2/23/2026

The course itself is incredible, I was looking for a DL course with academic fundamentals, based on books, articles, and experiments, that's exactly what this course offers.

By Jean Claude Umugaba on 2/8/2026

My experience with this course has been excellent, just like with all of Dr. Mike’s other courses that I completed. He consistently delivers quality and never disappoints.

By Priyanka Deshpande on 1/30/2026

very well planned and useful details

By Chidambara Raju G on 1/4/2026

Thank you, Mike, for this amazing course. I truly enjoyed it from start to finish. The final sections on Transfer Learning, Style Transfer, and GANs were especially informative, engaging, and eye-opening. I’m looking forward to purchasing the LLM course very soon.

By nARAYAN Subramaniyam on 12/29/2025

Great lecture so far. Currently on the math behind ANN. What could have helped build the intuition a bit more is to say how the ratio of weights is related to the slope ? ex. if w1=0, then decision boundary is horizontal line...

By Troy Miller on 12/19/2025

So far, this lecture series has been the most enjoyable series I've purchased. I still have a long way to go, but he is taking his time to develop the ideas conceptually before diving into the rigor and mathematics of it all. I definitely like the flow of the class

By Omar Meqbel on 12/9/2025

The most comprehensive, deep and well-presented course in the domain of deep learning concepts, it takes the student through full picture from calculus and linear-algebra, (I have previous experience in this domain and yet I really got benefitted from both the base and advanced knowledge). Thank you.

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