I want to know why we use the sigmoid function. I am always confused about how we got the formula to get the probability.

exceptionally great course....thank u so much for andrew ng sir and his team for wonderfull assignments and course work.

Excellent course to understand the finest details of neural networks. Much better than the course from "Machine Learning"

Have a basic idea of neural network and deep learning, and some programming experience of the image classifying project.

It's a great Course.Professor Andrew NG explains everything really easy.Learned a lot from this course.Thank you Coursera

Concise and straight to the point. The important concepts are repeated and explained well even in a short amount of time.

Very good on fundamentals on how neural nets work. The equations and notations really helped to understand the algorithm.

It was as I expected challenge enough to keep me on track and fairly complete. Andrew was very clear on his explanations.

Awesome step by step course to see the inner working of a deep neural network and hands on programming a NN from scratch!

Difficult concepts were explained very well, and programming assignments helped me understand core concepts being taught.

Those mathematical symbols looks quite scary before I took this course, not they have become my toys, pretty cool course.

Succinct and thorough at the same time.Very useful fundamentals. Especially when taken after the original 2011 ML course.

You don't need to question a material that Prof Andrew has put together. Thanks very much for such an amazing experience.

Great course to get your hands dirty with the practical side of Machine Learning as well as a good theoretical basis too.

Really deepened my understanding on neural networks, especially the part about backward propagation. Great course indeed!

Father of deep learning, spreading knowledge in very elegant manner. It's very pleasureful, to be a troop of his AI army.

The professor explained everything with great clarity and detail which was very useful in understanding concepts quickly.

Pretty great intro material. Very straightforward and definitely good for a quick refresher or introduction to the field.

Very Interesting course. Andrew is remarkably explain the great insight to neural network. Kudos to deeplearning.ai team.

Brilliant, well paced and easy to get into. You'll be stretched mentally to complete the course, but that's a good thing.

Great introduction to neural networks. Gives both the mathematical basis and leads one though a practical implementation.

I previously completed Andrew Ng's Machine Learning course on Coursera. This one follows nicely from the original course.

Really helpful and get to know deep learning and neutral neworks. And many concept become clear after watching the videos

Finally, a Deep Neural Network class that explains how everything works. Not just the surface like every else out there.

Awesome course. I have learned so much things during this course and I can clearly explain now how neural network works.