October 2013
Beginner
148 pages
3h 38m
English
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Chapter 2. Data Preprocessing
Data preprocessing usually takes a lot of time to set up, because you have to take care of lot of different formats or sources. In this chapter, we will introduce the basic options to not only read and generate data but also to reshape them. Changing values is also a common task, and we will cover that too.
It is a good practice to keep checking certain constraints especially if you have volatile input sources. This is also important in KNIME. Finally, we will go through an example of workflow from import to preprocessing. In this chapter, we will cover the following topics:
- Data import
- From database
- From files
- From web services
- Regular expressions
- Transforming tables
- Transforming values
- Generating data
- Constraints
- Case studies ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.