Home » A Beginner-Friendly Guide to PyTorch and How it Works from Scratch

# A Beginner-Friendly Guide to PyTorch and How it Works from Scratch

• Anna says:

Awesome post, thanks for sharing.

• Pulkit Sharma says:

• Rajat says:

I don’t how to thank you Pulkit. So much informative and well-explained article. Keep up the good work.

• Pulkit Sharma says:

• Amazing article, broadens as once seemingly narrow concept and gives food for thought. Thank you.

• Pulkit Sharma says:

Thank you for your feedback Hayato!

• purna says:

I think “output = sigmoid(output_layer_input1)” , this should be ” output = sigmoid(output_layer_input). please correct me if I am wrong. Thank you

• Pulkit Sharma says:

Hi Purna,
Yes you are correct. Thank you for pointing it out. I have updated the same in the article.

• Vol says:

This is a very well written post. Excellent attempt to communicate concepts for beginners.

Please take a look at the derivative of sigmoid function again.

https://math.stackexchange.com/questions/78575/derivative-of-sigmoid-function-sigma-x-frac11e-x

• Pulkit Sharma says:

Hi,
That’s a good catch. Thank you for pointing it out. The derivative of a sigmoid function is sigmoid(x) * [1 – sigmoid(x)]. I have updated the same in the article.