How Models Learn

Scalar

An ordinary single number, used to stretch, shrink or flip a vector by multiplying each component.

Multiplying a vector by an ordinary number k, called a scalar, multiplies every component by k.
From Vectors and dot products, step “Adding and stretching”

See it in action

Try scalar hands-on in the lesson Vectors and dot products, part of the The maths behind AI course.

Open the lesson