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Codeless Time Series Analysis with KNIME

Codeless Time Series Analysis with KNIME

By : KNIME AG , Corey Weisinger, Maarit Widmann, Daniele Tonini
4.8 (10)
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Codeless Time Series Analysis with KNIME

Codeless Time Series Analysis with KNIME

4.8 (10)
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)
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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

Training an LSTM-based neural network

While neural networks are wonderfully flexible in regards to input data shapes and levels of cleanliness, they do require quite a bit more configuration than other model options before we even talk about model training. The first thing we’ll do is define our network architecture:

Figure 10.10 – LSTM model network architecture

The LSTM unit itself is a very powerful predictive tool. In many use cases, you may find LSTM units stacked on top of each other, running in parallel, or supplemented with additional dense layers to generate the desired output shape. Check out the book Codeless Deep Learning from Packt for more on LSTM networks.

In this example, we will consider a very simple architecture:

  1. The first node in the preceding diagram adds an input layer whose shape matches that of our chosen input tensor – that is, a 200-unit one-dimensional vector representing our past 200 lagged temperature...
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