## How to build Neural Network from scratch in Python | ann using numpy

In this video I have explained neural network from scratch using numpy. Hope you will like it. I have only used numpy for building ann

Here is the link for artificial neural network theoretical aspects

https://youtu.be/_PbKyo0DaC0

https://youtu.be/4iaCy0SsFYY

Source

### Comment List

• When Maths meets coding
November 14, 2020

Dou you have Gaussian discriminant analysis implementation in python

• When Maths meets coding
November 14, 2020

Can I get neural networks code with data set

• When Maths meets coding
November 14, 2020

Really great video… Hope to watch more in the future

• When Maths meets coding
November 14, 2020

Hey, what is your repository name?

• When Maths meets coding
November 14, 2020

Sorry sir, i have a question. in the last part, is that calculate accuracy or what?

• When Maths meets coding
November 14, 2020

How did you decide the number of layers and neurons?

• When Maths meets coding
November 14, 2020

• When Maths meets coding
November 14, 2020

I need help in implementing ann from scratch on breast cancer data set

• When Maths meets coding
November 14, 2020

Can I implement this breast cancer data set

• When Maths meets coding
November 14, 2020

Could you help: How can I assign the accuracy to a variable, like a=accuracy or a = binary_accuracy. This is part of the code of the neural network:

model = Sequential()

model.compile(loss='mean_squared_error',

metrics=['binary_accuracy']

model.fit(training_data, target_data, epochs=1000)

scores = model.evaluate(training_data, target_data)

"training_data, target_data are arrays"

Result of evaluation:

binary_accuracy: 0.5000

binary_accuracy: 50.00%

• When Maths meets coding
November 14, 2020

Hi, could you help me out with my project with regards to ANN?

• When Maths meets coding
November 14, 2020

great video!

• When Maths meets coding
November 14, 2020

hey, in epoch loop, you should first evaluate the dw's and then update the w's. Here you have used updated w2 to find w1, which is wrong.

• When Maths meets coding
November 14, 2020

Hi could you help me with my project ?