Ensembles notes (07) (Các phương pháp học ensemble) - Sebastian Raschka
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Tài liệu ghi chú bài giảng môn Học máy (STAT 479) của Sebastian Raschka, trình bày các phương pháp học ensemble như majority voting, bagging, boosting, random forests, stacking.
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STAT 479: Machine Learning Lecture Notes Sebastian Raschka Department of Statistics University of Wisconsin–Madison http://stat.wisc.edu/∼sraschka/teaching/stat479-fs2018/ Fall 2018 Contents 7 Ensemble Methods 1 7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7.2 Majority Voting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7.3 Soft Majority Voting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7.4 Bagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.5 Bias and Variance Intuition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7.6 Boosting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.6.1 8 7.7 7.8 7.9 AdaBoost (Adaptive Boosting) . . . . . . . . . . . . . . . . . . . . . . Random Forests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.2 Does random forest select a subset of features for every tree or every node? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.3 Generalization Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.4 Feature Importance via Random Forests . . . . . . . . . . . . . . . . . 10 7.7.5 Extremely Randomized Trees (ExtraTrees) . . . . . . . . . . . . . . . 10 Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.8.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.8.2 Naive Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.8.3 Stacking with Cross-Validation . . . . . . . . . . . . . . . . . . . . . . 13 Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.9.1 Assigned Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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- Document name
- Ensembles notes (07) (Các phương pháp học ensemble) - Sebastian Raschka
- School / Course
- University Wisconsin-Madison · Machine learning
- Content
- Tài liệu giới thiệu và giải thích các phương pháp Ensemble trong học máy, bao gồm Voting, Bagging, Boosting, Random Forests và Stacking. Mục tiêu là kết hợp nhiều mô hình để đạt hiệu suất tốt hơn mô hình đơn lẻ.
- Table of contents
- 7 Ensemble Methods
- 7.1 Introduction
- 7.2 Majority Voting
- 7.3 Soft Majority Voting
- 7.4 Bagging
- 7.5 Bias and Variance Intuition
- 7.6 Boosting
- 7.6.1 AdaBoost (Adaptive Boosting)
- 7.7 Random Forests
- 7.7.1 Overview
- 7.7.2 Does random forest select a subset of features for every tree or every node?
- 7.7.3 Generalization Error
- 7.7.4 Feature Importance via Random Forests
- 7.7.5 Extremely Randomized Trees (ExtraTrees)
- 7.8 Stacking
- 7.8.1 Overview
- 7.8.2 Naive Stacking
- 7.8.3 Stacking with Cross-Validation
- 7.9 Resources
- 7.9.1 Assigned Reading
- 7.9.2 Further Reading
- Pages
- 16 pages
- Uploaded by
- Uni24h
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Ensembles notes (07) (Các phương pháp học ensemble) - Sebastian Raschka
Generating preview...
STAT 479: Machine Learning Lecture Notes Sebastian Raschka Department of Statistics University of Wisconsin–Madison http://stat.wisc.edu/∼sraschka/teaching/stat479-fs2018/ Fall 2018 Contents 7 Ensemble Methods 1 7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7.2 Majority Voting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7.3 Soft Majority Voting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7.4 Bagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.5 Bias and Variance Intuition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7.6 Boosting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7.6.1 8 7.7 7.8 7.9 AdaBoost (Adaptive Boosting) . . . . . . . . . . . . . . . . . . . . . . Random Forests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.2 Does random forest select a subset of features for every tree or every node? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.3 Generalization Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7.4 Feature Importance via Random Forests . . . . . . . . . . . . . . . . . 10 7.7.5 Extremely Randomized Trees (ExtraTrees) . . . . . . . . . . . . . . . 10 Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.8.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.8.2 Naive Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.8.3 Stacking with Cross-Validation . . . . . . . . . . . . . . . . . . . . . . 13 Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.9.1 Assigned Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Read full document
- Document name
- Ensembles notes (07) (Các phương pháp học ensemble) - Sebastian Raschka
- School / Course
- University Wisconsin-Madison · Machine learning
- Content
- Tài liệu giới thiệu và giải thích các phương pháp Ensemble trong học máy, bao gồm Voting, Bagging, Boosting, Random Forests và Stacking. Mục tiêu là kết hợp nhiều mô hình để đạt hiệu suất tốt hơn mô hình đơn lẻ.
- Table of contents
- 7 Ensemble Methods
- 7.1 Introduction
- 7.2 Majority Voting
- 7.3 Soft Majority Voting
- 7.4 Bagging
- 7.5 Bias and Variance Intuition
- 7.6 Boosting
- 7.6.1 AdaBoost (Adaptive Boosting)
- 7.7 Random Forests
- 7.7.1 Overview
- 7.7.2 Does random forest select a subset of features for every tree or every node?
- 7.7.3 Generalization Error
- 7.7.4 Feature Importance via Random Forests
- 7.7.5 Extremely Randomized Trees (ExtraTrees)
- 7.8 Stacking
- 7.8.1 Overview
- 7.8.2 Naive Stacking
- 7.8.3 Stacking with Cross-Validation
- 7.9 Resources
- 7.9.1 Assigned Reading
- 7.9.2 Further Reading
- Pages
- 16 pages
- Uploaded by
- Uni24h
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