October 2015
Beginner to intermediate
254 pages
5h 31m
English
Content preview from Scala Data Analysis Cookbook (new)Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Binary classification using LogisticRegression with Pipeline API
Earlier, with the spam example on binary classification, we saw how we prepared the data, separated it into training and test data, trained the model, and evaluated it against test data before we finally arrived at the metrics. This series of steps can be abstracted in a simplified manner using Spark's Pipeline API.
In this recipe, we'll take a look at how to use the Pipeline API to solve the same classification problem. Imagine the pipeline to be a factory assembly line where things happen one after another. In our case, we'll pass our raw unprocessed data through various processors before we finally feed the data into the classifier.
How to do it...
In this recipe, we'll classify ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.