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

Introducing line plots

In this section, we will introduce a line plot, which is a widely used plot to display time series data. A line plot shows the observed values on the vertical axis (y axis) against time on the horizontal axis (x axis). The consecutive values are joined by straight lines to emphasize the continuity of the data over time and the chronological order of the observations.

In the following subsections, we will explain which characteristics of a time series a line plot can show and how to interpret a line plot. We will also show how to build a line plot in KNIME Analytics Platform.

Displaying simple dynamics with a line plot

A line plot displays the entire sequence of a time series. It is especially useful for displaying simple dynamics in a time series, such as a trend or a seasonal pattern. The following screenshot shows the average hourly energy consumption within cluster 26 in a line plot:

Figure 4.1 – Example of a line plot...