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The Unsupervised Learning Workshop

You're reading from   The Unsupervised Learning Workshop Get started with unsupervised learning algorithms and simplify your unorganized data to help make future predictions

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Product type Paperback
Published in Jul 2020
Publisher Packt
ISBN-13 9781800200708
Length 550 pages
Edition 1st Edition
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Authors (3):
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Benjamin Johnston Benjamin Johnston
Author Profile Icon Benjamin Johnston
Benjamin Johnston
Christopher Kruger Christopher Kruger
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Christopher Kruger
Aaron Jones Aaron Jones
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Aaron Jones
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Toc

Table of Contents (11) Chapters Close

Preface
1. Introduction to Clustering 2. Hierarchical Clustering FREE CHAPTER 3. Neighborhood Approaches and DBSCAN 4. Dimensionality Reduction Techniques and PCA 5. Autoencoders 6. t-Distributed Stochastic Neighbor Embedding 7. Topic Modeling 8. Market Basket Analysis 9. Hotspot Analysis Appendix

1. Introduction to Clustering

Activity 1.01: Implementing k-means Clustering

Solution:

  1. Import the required libraries:
    from sklearn.datasets import make_blobs
    from sklearn.cluster import KMeans
    from sklearn.metrics import accuracy_score, silhouette_score
    import matplotlib.pyplot as plt
    import pandas as pd
    import numpy as np
    from scipy.spatial.distance import cdist
    import math
    np.random.seed(0)
    %matplotlib inline
  2. Load the seeds data file using pandas:
    seeds = pd.read_csv('Seed_Data.csv')
  3. Return the first five rows of the dataset, as follows:
    seeds.head()

    The output is as follows:

    Figure 1.25: Displaying the first five rows of the dataset

  4. Separate the X features as follows:
    X = seeds[['A','P','C','LK','WK','A_Coef','LKG']]
    y = seeds['target']
  5. Check the features as follows:
    X.head()

    The output is as follows:

    Figure 1.26: Printing the features

  6. Define the k_means function as follows...
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