Book Image

The Data Analysis Workshop

By : Gururajan Govindan, Shubhangi Hora, Konstantin Palagachev
Book Image

The Data Analysis Workshop

By: Gururajan Govindan, Shubhangi Hora, Konstantin Palagachev

Overview of this book

Businesses today operate online and generate data almost continuously. While not all data in its raw form may seem useful, if processed and analyzed correctly, it can provide you with valuable hidden insights. The Data Analysis Workshop will help you learn how to discover these hidden patterns in your data, to analyze them, and leverage the results to help transform your business. The book begins by taking you through the use case of a bike rental shop. You'll be shown how to correlate data, plot histograms, and analyze temporal features. As you progress, you’ll learn how to plot data for a hydraulic system using the Seaborn and Matplotlib libraries, and explore a variety of use cases that show you how to join and merge databases, prepare data for analysis, and handle imbalanced data. By the end of the book, you'll have learned different data analysis techniques, including hypothesis testing, correlation, and null-value imputation, and will have become a confident data analyst.
Table of Contents (12 chapters)
7. Analyzing the Heart Disease Dataset
9. Analysis of the Energy Consumed by Appliances

4. Tackling Company Bankruptcy

Activity 4.01: Feature Selection with Lasso

  1. Import Lasso from the sklearn.linear_model package:
    from sklearn.linear_model import Lasso
    from sklearn.feature_selection import SelectFromModel
  2. Fit the independent and dependent variables with lasso regularization for the mean_imputed_df4 DataFrame:
    lasso = Lasso(alpha=0.01 ,positive=True),y6)
  3. Print the coefficients of lasso regularization:
    coef_list=sorted(zip(map(lambda x: round(x,4), \
                             features_names), reverse=True)
    coef_list [0:5]

    The output will be as follows:

    [(0.0009, 'X21'), (0.0002, 'X2'), (0.0001, ...