Book Image

Machine Learning Solutions

Book Image

Machine Learning Solutions

Overview of this book

Machine learning (ML) helps you find hidden insights from your data without the need for explicit programming. This book is your key to solving any kind of ML problem you might come across in your job. You’ll encounter a set of simple to complex problems while building ML models, and you'll not only resolve these problems, but you’ll also learn how to build projects based on each problem, with a practical approach and easy-to-follow examples. The book includes a wide range of applications: from analytics and NLP, to computer vision domains. Some of the applications you will be working on include stock price prediction, a recommendation engine, building a chat-bot, a facial expression recognition system, and many more. The problem examples we cover include identifying the right algorithm for your dataset and use cases, creating and labeling datasets, getting enough clean data to carry out processing, identifying outliers, overftting datasets, hyperparameter tuning, and more. Here, you'll also learn to make more timely and accurate predictions. In addition, you'll deal with more advanced use cases, such as building a gaming bot, building an extractive summarization tool for medical documents, and you'll also tackle the problems faced while building an ML model. By the end of this book, you'll be able to fine-tune your models as per your needs to deliver maximum productivity.
Table of Contents (19 chapters)
Machine Learning Solutions
Foreword
Contributors
Preface
Index

The best approach


In this section, we will be trying the approach named YOLO. YOLO stands for You Only Look Once. This technique gives us good accuracy, is fast, and its memory management is easy. This section will be divided into two parts:

  • Understanding YOLO

  • Implementing the best approach using YOLO

In the first section, we will understand the basics about YOLO. During the implementation, we will be use YOLO with the pre-trained YOLO model. So, let's begin!

Understanding YOLO

YOLO is a state-of-the-art, real-time object detection system. On GPU Titan X, it processes images at 40-90 FPS and has a mAP on the PASCAL VOC dataset of 78.6% and a mAP of 48.1% on the coco test-dev dataset. So, now, we will look at how YOLO works and processes the images in order to identify the objects. We are using YOLOv2 (YOLO version 2) as it is a faster version.

The working of YOLO

YOLO reframes the object detection problem. It considers the object recognition task as single regression problem, right from the image...