September 2018
Intermediate to advanced
472 pages
12h 2m
English
book
Python Data Science Essentials - Third Edition
by Alberto Boschetti, Luca Massaron, Pietro Marinelli, Matteo Malosetti
Content preview from Python Data Science Essentials - Third Edition
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Reducing the grid search runtime
The GridSearchCV function can really manage an extensive amount of work for you by checking all combinations of parameters, as required by your grid specification. Anyway, when the data or grid search space is big, the procedure may take a long time to compute.
A potential remedy to this issue would be the following approach from the model_selection module. RandomizedSearchCV offers a procedure that randomly draws a sample of combinations and reports the best combination found.
This has some clear advantages:
- You can limit the number of computations.
- You can obtain a good result or, at worst, understand where to focus your efforts on in the grid search.
- RandomizedSearchCV has the same options as GridSearchCV ...
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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.