# Tag: Deep Learning

### Simple Logistic Regression (Part 4)

Overfitting and Underfitting The cause of poor performance of in machine learning can be attributed to either overfitting or under-fitting. What we want is model that fits appropriately. Overfitting happens when a model learns the detail and...

### Simple Logistic Regression (Part 3)

Understanding Layers and Nodes In this lesson we shall talk a bit more about layers and units. Let’s examine this 4-layer neural network. This neural network takes 2 inputs. Layer 1 has 5 units, Layer 2 has 5 units, Layer 3 has 3 units and Layer...

### Simple Logistic Regression (Part 2)

Understanding Computational Graphs Before we continue with our cat problem I would to use the lesson to introduce a visualization tool known as computation graphs. Lets say we have a function j of a b c equals 3 into brackets a plus bc. Lets say...

### Basic Derivatives

In this lesson we are going to give a short revision of calculus. This will help to be able to picture backpropagation and gradient descent more easily in future lesson. You do not need to understand calculus to work with deep learning major of...

### The Functional Description of a biological Neuron

The foundational unit of the human brain is the neuron. A tiny piece of the brain, about the size of grain of rice, contains over 10,000 neurons, each of which forms an average  It’s this massive biological network that enables us to...

### Introduction to Deep Learning

There are two ways of looking at deep learning and its relationship to the larger field of artificial intelligence. Deep learning can be described as a subset if machine learning which uses artificial neural networks. Machine learning is the...

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