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Questions and Answers
What was the first machine learning application that became mainstream in the 1990s?
What is the primary goal of this chapter?
What is an example of a machine learning application that has become a part of daily life?
What is a fundamental concept in machine learning that every data scientist should know?
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What is NOT a characteristic of a machine that has 'learned' something?
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What is the primary goal of machine learning?
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What is the term for the examples used to train a machine learning system?
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What is the term for the part of a machine learning system that learns and makes predictions?
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What is the purpose of a performance measure in machine learning?
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Which of the following is an example of machine learning?
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Study Notes
Machine Learning: A Brief Overview
- Machine learning is no longer science fiction and has been around for decades in some specialized applications, such as optical character recognition (OCR).
- The first mainstream ML application was the spam filter, which improved the lives of hundreds of millions of people in the 1990s.
What is Machine Learning?
- Machine learning is the science (and art) of programming computers so they can learn from data.
- It is the field of study that gives computers the ability to learn without being explicitly programmed.
- A computer program is said to learn from experience E with respect to some task T and some performance measure P, if its performance on T, as measured by P, improves with experience E.
Key Concepts in Machine Learning
- A training set consists of examples used to learn, such as spam emails and regular emails.
- Each training example is called a training instance (or sample).
- The part of a machine learning system that learns and makes predictions is called a model.
- Examples of models include neural networks and random forests.
Evaluating Machine Learning Systems
- The performance measure P needs to be defined, such as the ratio of correctly classified emails (accuracy).
- Accuracy is often used in classification tasks.
What Does Not Constitute Machine Learning
- Simply downloading a copy of all Wikipedia articles does not constitute machine learning, as it does not improve the computer's ability to perform a task.
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Description
This quiz explores the evolution of machine learning from its early days to its current mainstream use. Discover how machine learning has improved the lives of millions of people.
