PCA () 1 2 3 plt.bar(np.arange (1,5), pca.explained_variance_ratio_) 4 plt.xticks (np.arange (1, 5)) # Set label locations. 5 plt.xlabel("Component number") 6 plt.ylabel("Proportion of Variance") 7 plt.title("Scree Plot") pca = pca = pca.fit(iris_df)

PCA () 1 2 3 plt.bar(np.arange (1,5), pca.explained_variance_ratio_) 4 plt.xticks (np.arange (1, 5)) # Set label locations. 5 plt.xlabel("Component number") 6 plt.ylabel("Proportion of Variance") 7 plt.title("Scree Plot") pca = pca = pca.fit(iris_df)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Explain what each of the python code is doing:

PCA ()
1
2
3 plt.bar(np.arange (1,5), pca.explained_variance_ratio_)
4 plt.xticks (np.arange(1, 5)) # Set label locations.
5 plt.xlabel("Component number")
6 plt.ylabel("Proportion of Variance")
7 plt.title("Scree Plot")
pca =
pca = pca.fit(iris_df)

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