How Exponential Smoothing Tames Time Series Data

A Step-by-Step Guide to Transforming Raw Time Series Into Actionable Insights

Sofien Kaabar, CFA
5 min readJun 17, 2024


Data denoising is the process of removing or reducing noise from a dataset. Noise in data refers to random variations, errors, or unwanted interference that can obscure the underlying patterns, trends, or signals in the data. In this article, we embark on a journey to demystify exponential smoothing.

Introduction to Exponential Smoothing in Layman’s Terms

Denoising aims to improve the data’s quality by eliminating or minimizing these unwanted elements.

Whether you’re predicting stock prices, demand for products, or future trends, the inherent noise and fluctuations in time series data can make the task daunting. Exponential smoothing may help denoise data and make it easier for you to forecast future values.

Exponential smoothing is a versatile and elegant technique that has become indispensable in the toolkit of data scientists, statisticians, and business analysts alike. Imagine you’re standing on the shore, trying to make sense of waves crashing upon the beach. These waves represent the intricate patterns and fluctuations in your time series data. Exponential smoothing acts as a smoothing…