AI and machine learning are increasingly becoming more and more integrated into our daily lives, and the number of jobs in this field continues to rise in tandem. In fact, IDC estimates that AI systems spend will more than double to $79.2 billion (£65.47 billion) in 2022.

For computer scientists and developers interested in becoming machine learning experts, there are a variety of expensive, in-person courses to choose from. However, we've found some cheaper online courses that you can work through at your own pace.

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Read next: Best AI and machine learning tools for developers

Fast.ai


Fast.ai provides a range of courses covering machine learning and AI, including some on the basics to get started with the technology.

One example is the Introduction to machine learning for coders, which provides detailed teaching on the most important machine learning models, how to create the models from scratch and the key skills needed for data preparation and model validation.

There are also other courses to choose from for beginners and experienced learners. All courses are available for free.

These include:

Code-first introduction to natural language processing

Computational linear algebra

Practical deep learning for coders

Part 2: Deep learning from the foundations

DataCamp


DataCamp offers hands-on training courses, with a variety of topics related to machine learning.

It offers a range of courses that show users practical lessons such as how to work on deep learning using Keras 2.0, the latest version of the library.

Some of the courses available include:

Machine Learning Toolbox

Machine Learning with Apache Spark

Designing machine learning workflows in Python

Building chatbots in Python

The course lengths range from four to six hours and pricing starts from £20.62 a month for access to 287 courses.

Udemy


Udemy is a vast online learning platform aimed at professionals, covering subjects as diverse as languages to design to - the topic of most interest to us - Data and Analytics.

One particular course that caught our eye is the Data Science and Machine Learning Bootcamp with R. On this course participants will learn how to programme in R, create data visualisations and use R for machine learning algorithms.

Udemy also offers a 30-day money back guarantee if you’re not happy.

Others include: 

Machine Learning A-Z™: Hands-On Python & R In Data Science - This introductory course covers learning how to create machine learning algorithms in Python and R and is a bestseller on the site, rated 4.4 stars out of almost 50,000 reviews.

The only qualification you need to attempt the course is high school level maths. Priced at £24.99, it's made up of 41 hours on-demand video.

Python for Data Science and Machine Learning Bootcamp - Although also priced at £24.99, this course is leaner than the previous one but still houses 21.5 hours on-demand video.

Among other things, you will use Python for data science and machine learning, Spark for big data analysis and implement machine learning algorithms.

For this course, some programming experience is recommended.

EdX


EdX offers online Machine Learning courses from Microsoft, IBM, MIT and other top universities and institutions around the world.

The Machine Learning with Python: A Practical Introduction course covers most of the basics. Students will learn about supervised vs. unsupervised learning and look at how statistical modeling relates to machine learning.

The course is free and requires 3-6 hours per week for two weeks in order to complete it.

Class Central


The Learning from Data (Introductory Machine Learning Course) is offered by California Institute of Technology through Class Central.

The course is free, self-paced and lasts for ten weeks. Both the lecturer and the syllabus come with a very high 4.5 star rating.

Udacity


Udacity offers a variety of different nanodegrees and courses that focus on AI and machine learning.

Its Machine Learning course by Georgia Tech lasts for four months and covers both supervised and unsupervised learning.

The course is self-paced, taught by industry professionals and completely free. It’s great for intermediate developers who want to hone their skills.

FutureLearn


FutureLearn is free online learning platform offering a huge variety of courses. There are a couple that are relevant to machine learning.

One of these is Big Data: Statistical Inference and Machine Learning. This is a three week free course consisting of two hours of study per week, with the choice of upgrading for £52 which gains you unlimited access to the course and a certificate of achievement upon completion.

Some of the areas covered on the course include 'Introduction to the relationship between statistical inference and machine learning' and 'The application of methods from these areas to real world projects'.

It's aimed at those with a university-level understanding of maths and statistics.

Another, more complex course is Advanced Machine Learning, which takes place over four weeks (four hours per week) with the option to upgrade for £62.

Topics covered include 'Statistical Machine Learning Theory' and 'Analysis and Evaluation of Statistical Models'.

Given the advanced nature of this course, at least a basic level understanding of machine learning, data science or statistical modelling is expected.

Coursera


Another well-known learning platform, Coursera offers a range of courses aimed at gaining skills in machine learning.

Coursera offers a range of courses aimed at machine learning. It currently has a Machine Learning course offered by Stanford University.

The course is taught 100 percent online and draws from numerous case studies and applications. It takes roughly 53 hours to complete and offers a broad introduction to data mining and statistical pattern recognition.