University:
Stanford University
Course:
CS229 | Machine Learning
Academic year:

2023
Views:

455

Pages:

2
Author:

anon

How to Understand Supervised Learning: Its Functions and Results A crucial part of machine learning is supervised learning, which includes feeding a dataset to a learning algorithm in order to create a model that can predict the future. We will examine the foundational ideas of supervised learning in this article, including how it functions, what results it produces, and how the model is represented mathematically. You will have a thorough understanding of supervised learning and its uses in machine learning by the end of this study. How does supervised learning work? A particular form of machine learning called supervised learning includes feeding a learning algorithm a dataset that contains both input features and output targets. The output targets, sometimes referred to as the correct responses, give the model the data it needs to understand the world and generate predictions. The objective of supervised learning is to develop a model that can make precise predictions based on the input features. Supervised Learning's Training Set In supervised learning, the training set includes both the output targets, such as the price of the property, and the output attributes, such as the size of a house. The output targets act as the correct responses from which the model will learn. You send the training set, which includes both the input characteristics and the output targets, to the learning algorithm to train the model. The Supervised Learning Model In supervised learning, the learning algorithm generates a function, denoted as f, that accepts a new input, x, and outputs an estimate or forecast, denoted as y-hat. The model is another name for the function f. The predicted value of the model, y-hat, is the target y's projected value. Defining the Role of Supervised Learning The representation of the function f is a crucial consideration when creating a learning algorithm. What mathematical equation will be used to calculate f, in other words? We will continue to draw f as a straight line for the time being. The formula for the function is 𝑓𝑤,𝑏(𝑥) = 𝑤𝑥 + 𝑏, where w and b are variables that are used to calculate the prediction of the input feature y-hat. The Training Set in Supervised Learning is Plotted Let's plot the training set on a graph with the output target y on the vertical axis and the input feature x on the horizontal axis to better comprehend supervised learning. The linear function 𝑓𝑤,𝑏(𝑥) = 𝑤𝑥 + 𝑏 is represented by the best-fit line, which is produced by the learning method. Using a simplified function of x, this straight line predicts the value of y.