Book Image

Python Machine Learning (Wiley)

By : Wei-Meng Lee
Book Image

Python Machine Learning (Wiley)

By: Wei-Meng Lee

Overview of this book

With computing power increasing exponentially and costs decreasing at the same time, this is the best time to learn machine learning using Python. Machine learning tasks that once required enormous processing power are now possible on desktop machines. Python Machine Learning begins by covering some fundamental libraries used in Python that make machine learning possible. You'll learn how to manipulate arrays of numbers with NumPy and use pandas to deal with tabular data. Once you have a firm foundation in the basics, you'll explore machine learning using Python and the scikit-learn libraries. You'll learn how to visualize data by plotting different types of charts and graphs using the matplotlib library. You'll gain a solid understanding of how the various machine learning algorithms work behind the scenes. The later chapters explore the common machine learning algorithms, such as regression, clustering, and classification, and discuss how to deploy the models that you have built, so that they can be used by client applications running on mobile and desktop devices. By the end of the book, you'll have all the knowledge you need to begin machine learning using Python.
Table of Contents (16 chapters)
Free Chapter
CHAPTER 9: Supervised Learning—Classification Using K‐Nearest Neighbors (KNN)
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Creating the Client Application to Use the Model

Once the REST API is up and running, and it has been tested to be working correctly, you can build the client side of things. Since this book revolves around Python, it is fitting to build the client using Python. Obviously, in real life, you would most likely build your clients for the iOS, Android, macOS, and Windows platforms.

Our Python client is pretty straightforward—formulate the JSON string to send to the service, get the result back in JSON, and then retrieve the details of the result:

import json
import requests
def predict_diabetes(BMI, Age, Glucose):
    url = ''
    data = {"BMI":BMI, "Age":Age, "Glucose":Glucose}
    data_json = json.dumps(data)
    headers = {'Content-type':'application/json'}
    response =, data=data_json, headers=headers)
    result = json.loads(response.text)
    return result...