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The Data Science Workshop

The Data Science Workshop - Second Edition

By : Anthony So , Thomas Joseph, Robert Thas John, Andrew Worsley , Dr. Samuel Asare
3 (2)
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The Data Science Workshop

The Data Science Workshop

3 (2)
By: Anthony So , Thomas Joseph, Robert Thas John, Andrew Worsley , Dr. Samuel Asare

Overview of this book

Where there’s data, there’s insight. With so much data being generated, there is immense scope to extract meaningful information that’ll boost business productivity and profitability. By learning to convert raw data into game-changing insights, you’ll open new career paths and opportunities. The Data Science Workshop begins by introducing different types of projects and showing you how to incorporate machine learning algorithms in them. You’ll learn to select a relevant metric and even assess the performance of your model. To tune the hyperparameters of an algorithm and improve its accuracy, you’ll get hands-on with approaches such as grid search and random search. Next, you’ll learn dimensionality reduction techniques to easily handle many variables at once, before exploring how to use model ensembling techniques and create new features to enhance model performance. In a bid to help you automatically create new features that improve your model, the book demonstrates how to use the automated feature engineering tool. You’ll also understand how to use the orchestration and scheduling workflow to deploy machine learning models in batch. By the end of this book, you’ll have the skills to start working on data science projects confidently. By the end of this book, you’ll have the skills to start working on data science projects confidently.
Table of Contents (16 chapters)
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Preface
12
12. Feature Engineering

Saving and Loading Models

You will eventually need to transfer some of the models you have trained to a different computer so they can be put into production. There are various utilities for doing this, but the one we will discuss is called joblib.

joblib supports saving and loading models, and it saves the models in a format that is supported by other machine learning architectures, such as ONNX.

joblib is found in the sklearn.externals module.

Exercise 6.14: Saving and Loading a Model

In this exercise, you will train a simple model and use it for prediction. You will then proceed to save the model and then load it back in. You will use the loaded model for a second prediction, and then compare the predictions from the first model to those from the second model. You will make use of the car dataset for this exercise.

The following steps will guide you toward the goal:

  1. Open a Colab notebook.
  2. Import the required libraries:
    import pandas as pd
    from sklearn.model_selection...
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Tech Concepts
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Programming languages
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The Data Science Workshop
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