This approach was applied in this case by subtracting a quadratic polynomial fit to the short-term averages.
From the en.wikipedia.org
If we wanted a better approximation to f, we might instead try a quadratic polynomial instead of a linear function.
From the en.wikipedia.org
Using a quadratic polynomial would permit a better approximation, since we would now be able to encode three pieces of information.
From the scienceblogs.com
For more information about quadratic polynomials, see Quadratic polynomial.
From the en.wikipedia.org
Polynomial models can be specified to allow for quadratic or cubic effects of time.
From the en.wikipedia.org
A quadratic spline composed of six polynomial segments.
From the en.wikipedia.org
For example, South Korean seventh-graders learn quadratic functions, and polynomial and linear equations, two years ahead of the typical American student.
From the ocregister.com
In fact not only quadratic equations, but all polynomial equations in a single variable can be solved using complex numbers.
From the en.wikipedia.org
Cayley introduced the idea of homogeneous polynomial forms, and more specifically quadratic forms, on projective space.