The document outlines the BigML Spring 2018 release webinar, focusing on the introduction of 'fusions,' which are ensembles of models designed to improve predictive stability. It discusses the pros and cons of using fusions versus single models, highlights the importance of feature diversity, and emphasizes improved text processing capabilities with new languages and filtering options. The session includes an invitation for questions and provides resources for further learning.

1. Introducing
Fusions
BigML Release: Fusions
Introducing
Fusions

2. BigML, Inc Spring 2018 Release Webinar: Fusions
Fusions Release
2
CHARLES PARKER, PH.D. - VP of Machine
Learning Algorithms
Please enter questions into chat box – We will
answer some via chat and others at the end of the
session
https://bigml.com/releases
ATAKAN CETINSOY - VP of Predictive Applications
Resources
Moderator
Speaker
Contact support@bigml.com
Twitter @bigmlcom
Questions

3. BigML, Inc Spring 2018 Release Webinar: Fusions 3
Much Ado About Fusions
1 Diving into Fusions
2 Some Pros and Cons
3 Aside: Prediction Explanations
4 Aside: New Text Options

4. BigML, Inc Spring 2018 Release Webinar: Fusions 4
Much Ado About Fusions
1 Diving into Fusions
2 Some Pros and Cons
3 Aside: Prediction Explanations
4 Aside: New Text Options

5. BigML, Inc Spring 2018 Release Webinar: Fusions 5
Mixture of Experts
Prediction!

6. BigML, Inc Spring 2018 Release Webinar: Fusions 6
Mixture of Experts
?
Prediction!

7. BigML, Inc Spring 2018 Release Webinar: Fusions 7
Mixture of Experts

8. BigML, Inc Spring 2018 Release Webinar: Fusions 8
Ensemble?
Prediction!Aggregate!

9. BigML, Inc Spring 2018 Release Webinar: Fusions 9
Creating a Fusion

10. BigML, Inc Spring 2018 Release Webinar: Fusions 10
Ensemble?
Prediction!Aggregate!

11. BigML, Inc Spring 2018 Release Webinar: Fusions 11
Prediction!Aggregate!
Fusion = Diverse Ensemble

12. BigML, Inc Spring 2018 Release Webinar: Fusions 12
Prediction!Aggregate!
Other Techniques?

13. BigML, Inc Spring 2018 Release Webinar: Fusions 13
Prediction!
Stacking

14. BigML, Inc Spring 2018 Release Webinar: Fusions 14
Boosting
Prediction!

15. BigML, Inc Spring 2018 Release Webinar: Fusions 15
Much Ado About Fusions
Diving into Fusions
Some Pros and Cons
3 Aside: Prediction Explanations
4 Aside: New Text Options
2
1

16. BigML, Inc Spring 2018 Release Webinar: Fusions 16
• A bit wobbly
• Regions of the input space might
have under-performing predictions
• Probably pretty fast
• With OptiML, it’s the best thing we
could find
Single Models vs. Fusions
• More stable
• Errors tend to be “smoothed out”
across the entire input space
• Maybe somewhat slow
• You’ll have to do some additional
validation to check performance
FusionsSingle Models

17. BigML, Inc Spring 2018 Release Webinar: Fusions 17
What About Performance?
• This is not typically a step that will result in huge performance gains,
unless you’ve got significant feature diversity (spoiler alert for aside
#2!)
• You’re usually better off feature engineering / acquiring more data
• Do it for stability
• . . . or to improve the importance profile (spoiler alert for aside #1!)

18. BigML, Inc Spring 2018 Release Webinar: Fusions 18
Much Ado About Fusions
Diving into Fusions
Aside: Prediction Explanations
2 Some Pros and Cons
4 Aside: New Text Options
3
1

19. BigML, Inc Spring 2018 Release Webinar: Fusions 19
Importance of Importance
What’s really important? Does it make sense?

20. BigML, Inc Spring 2018 Release Webinar: Fusions 20
Prediction Explanation

21. BigML, Inc Spring 2018 Release Webinar: Fusions 21
Much Ado About Fusions
Diving into Fusions
Aside: New Text Options
2 Some Pros and Cons
3 Aside: Prediction Explanations
4
1

22. BigML, Inc Spring 2018 Release Webinar: Fusions 22
Improved Text Processing
• 15 new languages, 22 in total
• New stop word options and term filters
• Longer n-grams

23. BigML, Inc Spring 2018 Release Webinar: Fusions 23
Text Options Define Features
• Change the level of stop word removal
• Use multi-grams and single term filtering
• Turn off stemming
• Then, learn models and create a Fusion!

24. BigML, Inc Spring 2018 Release Webinar: Fusions 24
Learn More
https://bigml.com/releases/spring-2018
https://bigml.com/whatsnew

25. Questions?
@bigmlcom support@bigml.com