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You're reading from  Machine Learning with scikit-learn Quick Start Guide

Product typeBook
Published inOct 2018
Reading LevelIntermediate
PublisherPackt
ISBN-139781789343700
Edition1st Edition
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Author (1)
Kevin Jolly
Kevin Jolly
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Kevin Jolly

Kevin Jolly is a formally educated data scientist with a master's degree in data science from the prestigious King's College London. Kevin works as a statistical analyst with a digital healthcare start-up, Connido Limited, in London, where he is primarily involved in leading the data science projects that the company undertakes. He has built machine learning pipelines for small and big data, with a focus on scaling such pipelines into production for the products that the company has built. Kevin is also the author of a book titled Hands-On Data Visualization with Bokeh, published by Packt. He is the editor-in-chief of Linear, a weekly online publication on data science software and products.
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Model optimization

The fundamental objective of the linear regression algorithm is to minimize the loss/cost function. In order to do this, the algorithm tries to optimize the values of the coefficients of each feature (Parameter1), such that the loss function is minimized.

Sometimes, this leads to overfitting, as the coefficients of each variable are optimized for the data that the variable is trained on. This means that your linear regression model will not generalize beyond your current training data very well.

The process by which we penalize hyper-optimized coefficients in order to prevent this type of overfitting is called regularization.

There are two broad types of regularization methods, as follows:

  • Ridge regression
  • Lasso regression

In the following subsections, the two types of regularization techniques will be discussed in detail, and you will learn about how...

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Machine Learning with scikit-learn Quick Start Guide
Published in: Oct 2018Publisher: PacktISBN-13: 9781789343700

Author (1)

author image
Kevin Jolly

Kevin Jolly is a formally educated data scientist with a master's degree in data science from the prestigious King's College London. Kevin works as a statistical analyst with a digital healthcare start-up, Connido Limited, in London, where he is primarily involved in leading the data science projects that the company undertakes. He has built machine learning pipelines for small and big data, with a focus on scaling such pipelines into production for the products that the company has built. Kevin is also the author of a book titled Hands-On Data Visualization with Bokeh, published by Packt. He is the editor-in-chief of Linear, a weekly online publication on data science software and products.
Read more about Kevin Jolly