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Machine Learning with Go Quick Start Guide
Machine Learning with Go Quick Start Guide

Machine Learning with Go Quick Start Guide: Hands-on techniques for building supervised and unsupervised machine learning workflows

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Profile Icon Michael Bironneau Profile Icon Toby Coleman
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Paperback May 2019 168 pages 1st Edition
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Arrow left icon
Profile Icon Michael Bironneau Profile Icon Toby Coleman
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Paperback May 2019 168 pages 1st Edition
eBook
€10.99 €16.99
Paperback
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Free Trial
Renews at €18.99p/m
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Machine Learning with Go Quick Start Guide

Setting Up the Development Environment

Just like traditional software development, ML application development requires the mastery of specialist boilerplate code and a development environment that allows the developer to proceed at a pace that has the lowest amount of friction and distraction. Software developers typically waste a lot of time with basic setup and data wrangling tasks. Being a productive and professional ML developer requires the ability to quickly prototype solutions; this means expending as little effort as possible on trivial tasks.

In the previous chapter, we outlined the main ML problems and a development process that you can follow to obtain a commercial solution. We also explained the advantages offered by Go as a programming language when creating ML applications.

In this chapter, we will guide you through the steps that are required to set up a development...

Installing Go

Development environments are personal. Most developers will prefer one code editor or toolset over another. While we recommend the use of interactive tools such as Jupyter via gophernotes, the only prerequisite to running the code examples in this book is a working installation of Go 1.10 or higher. That is, the go command should be available and the GOPATH environment variable should be set up correctly.

To install Go, download a binary release for your system from https://golang.org/dl/. Then, refer to the one of the following subsections that matches your operating system[2].

If you only want to use gophernotes to run Go code and you intend to use Docker as the installation method, then you can skip this section and go straight to the Running Go interactively with gophernotes section.
...

Running Go interactively with gophernotes

Project Jupyter is a not-for-profit organization that was created to develop language-agnostic interactive computing for data science[3]. The result is a mature, well-supported environment to explore, visualize, and process data that can significantly accelerate development by providing immediate feedback and integrations with plotting libraries such as gonum/plot.

While its first iteration, called iPython, only supported Python-based handlers (called kernels) at first, the latest version of Jupyter has over 50 kernels that support dozens of languages, including three kernels for the Go language[4]. GitHub has support for rendering Jupyter files (called notebooks)[5], and there are various specialized hubs for sharing notebooks online, including Google Research Colabs[6], Jupyter's community hub called NBViewer[7], and its enterprise...

Example – the most common phrases in positive and negative reviews

In our first code example, we will use the multi-domain sentiment dataset (version 2.0)[11]. This dataset contains Amazon reviews from four different product categories. We will download it, preprocess it, and load it into Gota, a data wrangling library, to find the most common phrases in positive and negative reviews that do not co-occur in both. This is a basic example that involves no ML algorithms, but will serve as a hands-on introduction to Go, gophernotes, and Gota.

You can find the full code example in the companion repository to this book at https://github.com/PacktPublishing/Machine-Learning-with-Go-Quick-Start-Guide.

Initializing the example directory and downloading the dataset

...

Example – exploring body mass index data with gonum/plot

In the previous section, we introduced gophernotes and Gota. In this section, we will explore a dataset containing 500 samples of gender, height, and BMI index. We will do this using the gonum/plot library. This library, which was originally a fork of the 2012 Plotinum library[15], contains several packages that make creating data visualizations in Go much easier[16]:

  • The plot package contains a layout and formatting interface.
  • The plotter package abstracts the layout and formatting for common plot types, such as bar charts, scatter plots, and so on.
  • The plotutil package contains utility funcs for common plot types.
  • The vg package exposes an API for vector graphics and is particularly useful when exporting plots to other software. We will not be covering this package.
...

Example – preprocessing data with Gota

The quality and speed of the ML algorithm training process depends on the quality of the input data. While many algorithms are robust to irrelevant columns and data that is not normalized, some are not. For example, many models requires data inputs to be normalized to lie between 0 and 1. In this section, we will look at some quick and easy ways to preprocess data with Gota. For these examples, we will be using a dataset containing 1,035 records of the height (inch) and weight (lbs) of major league baseball players[17]. The dataset, as described on the UCLA website, consists of the following features:

  • Name: Player name
  • Team: The baseball team that the player was a member of
  • Position: The player's position
  • Height (inches): Player height
  • Weight (pounds): Player weight in pounds
  • Age: Player age at the time of recording

For the...

Summary

In this chapter, we covered how to set up a development environment for Go that is optimized for ML applications. We explained how to install an interactive environment, Jupyter, to accelerate data exploration and visualization using libraries such as Gota and gonum/plot.

We also introduced some basic data processing steps, such as filtering outliers, removing unnecessary columns, and normalization. Finally, we covered sampling. This chapter took the first few steps in the ML life cycle: data acquisition, exploration, and preparation. Now that you have read this chapter, you have learned how to load data into a Gota dataframe, how to use the dataframe and series packages to process and prepare the data into a format that is required by your chosen algorithm, and how to visualize it with gonum's plot package. You have also learned about different ways of normalizing...

Further readings

  1. Software Development Waste. Todd Sedano and Paul Ralph. ICSE '17 Proceedings of the 39th International Conference on Software Engineering. Pages 130-140.
  2. See the official Go installation instructions at https://golang.org/doc/install. Retrieved February 19th, 2019.
  3. https://jupyter.org/about. Retrieved February 19th, 2019.
  4. https://github.com/jupyter/jupyter/wiki/Jupyter-kernels. Retrieved February 19th, 2019.
  5. For further instructions, see https://help.github.com/articles/working-with-jupyter-notebook-files-on-github/. Retrieved February 19th, 2019.
  6. https://colab.research.google.com. Retrieved February 19th, 2019.
  7. https://nbviewer.jupyter.org/. Retrieved February 19th, 2019.
  8. https://jupyter.org/hub. Retrieved February 19th, 2019.
  9. https://github.com/jupyter/nbconvert. Retrieved February 19th, 2019.
  10. For Docker installation instructions, see https://docs.docker...
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Key benefits

  • Your handy guide to building machine learning workflows in Go for real-world scenarios
  • Build predictive models using the popular supervised and unsupervised machine learning techniques
  • Learn all about deployment strategies and take your ML application from prototype to production ready

Description

Machine learning is an essential part of today's data-driven world and is extensively used across industries, including financial forecasting, robotics, and web technology. This book will teach you how to efficiently develop machine learning applications in Go. The book starts with an introduction to machine learning and its development process, explaining the types of problems that it aims to solve and the solutions it offers. It then covers setting up a frictionless Go development environment, including running Go interactively with Jupyter notebooks. Finally, common data processing techniques are introduced. The book then teaches the reader about supervised and unsupervised learning techniques through worked examples that include the implementation of evaluation metrics. These worked examples make use of the prominent open-source libraries GoML and Gonum. The book also teaches readers how to load a pre-trained model and use it to make predictions. It then moves on to the operational side of running machine learning applications: deployment, Continuous Integration, and helpful advice for effective logging and monitoring. At the end of the book, readers will learn how to set up a machine learning project for success, formulating realistic success criteria and accurately translating business requirements into technical ones.

Who is this book for?

This book is for developers and data scientists with at least beginner-level knowledge of Go, and a vague idea of what types of problem Machine Learning aims to tackle. No advanced knowledge of Go (and no theoretical understanding of the math that underpins Machine Learning) is required.

What you will learn

  • Understand the types of problem that machine learning solves, and the various approaches
  • Import, pre-process, and explore data with Go to make it ready for machine learning algorithms
  • Visualize data with gonum/plot and Gophernotes
  • Diagnose common machine learning problems, such as overfitting and underfitting
  • Implement supervised and unsupervised learning algorithms using Go libraries
  • Build a simple web service around a model and use it to make predictions
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Table of Contents

8 Chapters
Introducing Machine Learning with Go Chevron down icon Chevron up icon
Setting Up the Development Environment Chevron down icon Chevron up icon
Supervised Learning Chevron down icon Chevron up icon
Unsupervised Learning Chevron down icon Chevron up icon
Using Pretrained Models Chevron down icon Chevron up icon
Deploying Machine Learning Applications Chevron down icon Chevron up icon
Conclusion - Successful ML Projects Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon
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