Welcome back to this three-part blog post series on Holt-Winters and why it's still highly relevant today. To understand Part Two, I suggest reading Part One, in which we covered:
- When to use Holt-Winters.
- How Single Exponential Smoothing works.
- A conceptual overview of optimization for Single Exponential Smoothing.
- Extra: The proof for optimization of the Residual Sum of Squares (RSS) for Linear Regression.
In this piece, Part Two, we'll explore: