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Machine Learning Algorithms

You're reading from   Machine Learning Algorithms Popular algorithms for data science and machine learning

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789347999
Length 522 pages
Edition 2nd Edition
Languages
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Author (1):
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Giuseppe Bonaccorso Giuseppe Bonaccorso
Author Profile Icon Giuseppe Bonaccorso
Giuseppe Bonaccorso
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Table of Contents (19) Chapters Close

Preface 1. A Gentle Introduction to Machine Learning FREE CHAPTER 2. Important Elements in Machine Learning 3. Feature Selection and Feature Engineering 4. Regression Algorithms 5. Linear Classification Algorithms 6. Naive Bayes and Discriminant Analysis 7. Support Vector Machines 8. Decision Trees and Ensemble Learning 9. Clustering Fundamentals 10. Advanced Clustering 11. Hierarchical Clustering 12. Introducing Recommendation Systems 13. Introducing Natural Language Processing 14. Topic Modeling and Sentiment Analysis in NLP 15. Introducing Neural Networks 16. Advanced Deep Learning Models 17. Creating a Machine Learning Architecture 18. Other Books You May Enjoy

Linear regression with scikit-learn and higher dimensionality

The scikit-learn library offers the LinearRegression class, which works with n-dimensional spaces. For this purpose, we're going to use the Boston dataset:

from sklearn.datasets import load_boston

boston = load_boston()

print(boston.data.shape)
(506L, 13L)

print(boston.target.shape)
(506L,)

It has 506 samples with 13 input features and one output. In the following graph, there's a collection of the plots of the first 12 features:

The plot of the first 12 features of the Boston dataset
When working with datasets, it's useful to have a tabular view to manipulate data. Pandas is a perfect framework for this task, and even though it's beyond the scope of this book, I suggest you create a data frame with the pandas.DataFrame(boston.data, columns=boston.feature_names) command and use Jupyter to visualize it...
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