Book Image

Codeless Time Series Analysis with KNIME

By : KNIME AG, Corey Weisinger, Maarit Widmann, Daniele Tonini
Book Image

Codeless Time Series Analysis with KNIME

By: KNIME AG, Corey Weisinger, Maarit Widmann, Daniele Tonini

Overview of this book

This book will take you on a practical journey, teaching you how to implement solutions for many use cases involving time series analysis techniques. This learning journey is organized in a crescendo of difficulty, starting from the easiest yet effective techniques applied to weather forecasting, then introducing ARIMA and its variations, moving on to machine learning for audio signal classification, training deep learning architectures to predict glucose levels and electrical energy demand, and ending with an approach to anomaly detection in IoT. There’s no time series analysis book without a solution for stock price predictions and you’ll find this use case at the end of the book, together with a few more demand prediction use cases that rely on the integration of KNIME Analytics Platform and other external tools. By the end of this time series book, you’ll have learned about popular time series analysis techniques and algorithms, KNIME Analytics Platform, its time series extension, and how to apply both to common use cases.
Table of Contents (20 chapters)
1
Part 1: Time Series Basics and KNIME Analytics Platform
7
Part 2: Building and Deploying a Forecasting Model
14
Part 3: Forecasting on Mixed Platforms

Summary

In this chapter, we covered the first use application of forecasting in KNIME Analytics Platform; getting data from IoT sensors for modeling can be facilitated by KNIME workflows that have been loaded to KNIME Server and given REST endpoints. One workflow accepted this data and appended it to a database table until we had enough stored to train a model to generate humidity forecasts.

We introduced several classic methods for generating Time Series forecasts: the naïve forecast, which uses the most recent known value as its predictions; the mean value forecast that uses the mean of the known values as its predictions; exponential smoothing, which uses a weight average to generate its predictions, putting it somewhere in between the naïve and mean forecasts; and finally, the linear regression, the first model that is actually a fit. The ARIMA and SARIMA models later in this book will expand the regression format.

Finally, we talked about how to automatically...