Neural Networks Basics
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The document provides an overview of neural networks, including their definition, historical context, and basic functionality in Python. It discusses the structure of neural networks through examples like handwritten digit recognition and introduces important concepts such as activation functions and the perceptron model. Various external links for further learning are also included.
Neural Networks Basics
- 1. Neural Networks Basics by Anatolii Shkurpylo, Software Developer
- 2. www.eliftech.com ▪ Interesting intro ▪ What is NN ? ▪ Now NN works? ▪ Simple NN in Python ▪ Links
- 5. www.eliftech.com NN is used ▪ Classification ▪ Regression ▪ Clustering
- 6. www.eliftech.com What is Neural Networks
- 7. www.eliftech.com “Neural network - a beautiful biologically-inspired programming paradigm which enables a computer to learn from observational data” Michael Nielsen Deep learning - a powerful set of techniques for learning in neural networks
- 9. www.eliftech.com History First Neuron Model was invented in 1943 by two data scientists W. McCulloch and W. Pitts
- 10. www.eliftech.com History In 1957 psychologist Frank Rosenblatt conceived the perceptron. Perceptron - Single Layer Feedforward Neural Network
- 13. www.eliftech.com Consider this by resolving Handwritten Digit Recognition problem NN 6
- 14. www.eliftech.com A mostly complete chart of Neural Networks
- 15. www.eliftech.com ... Input layer 2 hidden layers Output layer 28 * 28 px vector 784d
- 16. www.eliftech.com How does human recognize the digits?
- 17. www.eliftech.com How NN recognize the digits (not actually)? pixels layer edges layer shapes layer digits layer
- 18. www.eliftech.com weights of previous layer biases of previous layer activations of previous layer
- 19. www.eliftech.com
- 20. www.eliftech.com Now we know how NN calculate! Let’s take a look at few other things.
- 21. www.eliftech.com Activation function To make our model nonlinear
- 23. www.eliftech.com Input layer Output layerHidden layer
- 24. www.eliftech.com Links ▪ http://neuralnetworksanddeeplearning.com/index.html ▪ https://becominghuman.ai/cheat-sheets-for-ai-neural-networks-machine-learning- deep-learning-big-data-678c51b4b463 ▪ https://www.analyticsvidhya.com/blog/2016/03/introduction-deep-learning- fundamentals-neural-networks/ ▪ http://www.3blue1brown.com/ ▪ http://neuralnetworksanddeeplearning.com/index.html ▪ https://iamtrask.github.io/2015/07/12/basic-python-network/
- 25. www.eliftech.com Thank you for attention! Find us at eliftech.com Have a question? Contact us: info@eliftech.com