background preloader

Neural Networks

Facebook Twitter

How To Create A Neural Network in JavaScript - Scrimba screencast. An overview of gradient descent optimization algorithms. Note: If you are looking for a review paper, this blog post is also available as an article on arXiv.

An overview of gradient descent optimization algorithms

Table of contents: Gradient descent is one of the most popular algorithms to perform optimization and by far the most common way to optimize neural networks. At the same time, every state-of-the-art Deep Learning library contains implementations of various algorithms to optimize gradient descent (e.g. lasagne's, caffe's, and keras' documentation). Neural Networks in Javascript. Neural networks provide the possibility to solve complicated non linear problems.

Neural Networks in Javascript

They can be used in various areas such as signal classification, forecasting timeseries and pattern recognition. A neural network is a model inspired by the human brain and consists of multiple connected neurons. The network consists of a layer of input neurons (where the information goes in), a layer of output neurons (where the result can be taken from) and a number of so called hidden layers in between: For getting a deeper understanding, I recommend checking out Neural Networks and Deep Learning.

A Beginner's Guide To Understanding Convolutional Neural Networks – Adit Deshpande – CS Undergrad at UCLA ('19) Introduction Convolutional neural networks.

A Beginner's Guide To Understanding Convolutional Neural Networks – Adit Deshpande – CS Undergrad at UCLA ('19)

Sounds like a weird combination of biology and math with a little CS sprinkled in, but these networks have been some of the most influential innovations in the field of computer vision. 2012 was the first year that neural nets grew to prominence as Alex Krizhevsky used them to win that year’s ImageNet competition (basically, the annual Olympics of computer vision), dropping the classification error record from 26% to 15%, an astounding improvement at the time.Ever since then, a host of companies have been using deep learning at the core of their services.

Facebook uses neural nets for their automatic tagging algorithms, Google for their photo search, Amazon for their product recommendations, Pinterest for their home feed personalization, and Instagram for their search infrastructure. However, the classic, and arguably most popular, use case of these networks is for image processing. Neural Network Architectures. Deep neural networks and Deep Learning are powerful and popular algorithms.

Neural Network Architectures

And a lot of their success lays in the careful design of the neural network architecture. I wanted to revisit the history of neural network design in the last few years and in the context of Deep Learning. How do Convolutional Neural Networks work? Pdf [2MB] ppt [6MB] Nine times out of ten, when you hear about deep learning breaking a new technological barrier, Convolutional Neural Networks are involved.

How do Convolutional Neural Networks work?

Also called CNNs or ConvNets, these are the workhorse of the deep neural network field. They have learned to sort images into categories even better than humans in some cases. A Visual and Interactive Guide to the Basics of Neural Networks – J Alammar – Explorations in touchable pixels and intelligent androids. Motivation I’m not a machine learning expert.

A Visual and Interactive Guide to the Basics of Neural Networks – J Alammar – Explorations in touchable pixels and intelligent androids

I’m a software engineer by training and I’ve had little interaction with AI. I had always wanted to delve deeper into machine learning, but never really found my “in”. Yes you should understand backprop – Andrej Karpathy – Medium. When we offered CS231n (Deep Learning class) at Stanford, we intentionally designed the programming assignments to include explicit calculations involved in backpropagation on the lowest level.

Yes you should understand backprop – Andrej Karpathy – Medium

The students had to implement the forward and the backward pass of each layer in raw numpy. Inevitably, some students complained on the class message boards: “Why do we have to write the backward pass when frameworks in the real world, such as TensorFlow, compute them for you automatically?” This is seemingly a perfectly sensible appeal - if you’re never going to write backward passes once the class is over, why practice writing them? Are we just torturing the students for our own amusement? A Neural Network Playground. Data Which dataset do you want to use?

A Neural Network Playground

Features Which properties do you want to feed in? Click anywhere to edit. Artificial Neural Networks: Mathematics of Backpropagation (Part 4) — BRIAN DOLHANSKY. No longer is there a linear relation in between a change in the weights and a change of the target.

Artificial Neural Networks: Mathematics of Backpropagation (Part 4) — BRIAN DOLHANSKY

Any perturbation at a particular layer will be further transformed in successive layers. So, then, how do we compute the gradient for all weights in our network? Home - colah's blog. The Neural Network Zoo - The Asimov Institute. With new neural network architectures popping up every now and then, it’s hard to keep track of them all.

The Neural Network Zoo - The Asimov Institute

Knowing all the abbreviations being thrown around (DCIGN, BiLSTM, DCGAN, anyone?) Can be a bit overwhelming at first. So I decided to compose a cheat sheet containing many of those architectures. Most of these are neural networks, some are completely different beasts.