What are lambda functions and how are they used in machine learning?

What are lambda functions and how are they used in machine learning?

Lambda functions are anonymous functions defined with the keyword 'lambda'. In machine learning, they are often used for short, throwaway functions that are not reused elsewhere.

Can you give me an example of a lambda function in Python?

Sure! Here's a simple example: square = lambda x: x ** 2. You can use it like this: print(square(5)), which will output 25.

How do lambda functions compare to regular functions?

Lambda functions are typically more concise and can be defined in a single line, while regular functions are defined using the 'def' keyword and can include multiple lines of code.

When should I use lambda functions in my ML projects?

Use lambda functions when you need a simple function for a short period, like in data transformations or when passing functions as arguments to higher-order functions.