Book Image

Exploring Data with RapidMiner

By : Andrew Chisholm
Book Image

Exploring Data with RapidMiner

By: Andrew Chisholm

Overview of this book

<p>Data is everywhere and the amount is increasing so much that the gap between what people can understand and what is available is widening relentlessly. There is a huge value in data, but much of this value lies untapped. 80% of data mining is about understanding data, exploring it, cleaning it, and structuring it so that it can be mined. RapidMiner is an environment for machine learning, data mining, text mining, predictive analytics, and business analytics. It is used for research, education, training, rapid prototyping, application development, and industrial applications.</p> <p>Exploring Data with RapidMiner is packed with practical examples to help practitioners get to grips with their own data. The chapters within this book are arranged within an overall framework and can additionally be consulted on an ad-hoc basis. It provides simple to intermediate examples showing modeling, visualization, and more using RapidMiner.<br /><br />Exploring Data with RapidMiner is a helpful guide that presents the important steps in a logical order. This book starts with importing data and then lead you through cleaning, handling missing values, visualizing, and extracting additional information, as well as understanding the time constraints that real data places on getting a result. The book uses<br />real examples to help you understand how to set up processes, quickly.</p> <p>This book will give you a solid understanding of the possibilities that RapidMiner gives for exploring data and you will be inspired to use it for your own work.</p>
Table of Contents (18 chapters)
Exploring Data with RapidMiner
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Logging data in RapidMiner Studio


RapidMiner Studio provides the Log operator, which we have already seen being used in the previous chapters. Of all the operators, this is the one that I use a great deal, both for debugging and for creation of data.

Dealing with logging first, the Log operator can be inserted anywhere in a process and is configured to output the parameters or values associated with another operator somewhere in the process. For example, the screenshot that follows shows some example parameters for the Log operator:

The left-most column becomes the column name in the log, the second column is the name of the operator within the process, the third column is the type of information (either value or parameter), and the final column is the name of the information to log, which is filled in automatically with valid options by the RapidMiner Studio GUI. The value option is used to log the result of the execution of an operator, whereas the parameter option is used to log the parameters...