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

Summary


In this chapter, we looked at how to develop the face detection application using the face_recognition library, which uses the HOG-based model to identify the faces in the images. We have also used the pre-trained convolutional neural network, which identifies the faces from a given image. We developed real-time face recognition to detect the names of people. For face recognition, we used a pre-trained model and already available libraries. In the second part of the chapter, we developed the face emotion recognition application, which can detect seven major emotions a human face can carry. We used TensorFlow, OpenCV, TFLearn, and Keras in order to build the face emotion recognition model. This model has fairly good accuracy for predicting the face emotion. We achieved the best possible accuracy of 67%.

Currently, the computer vision domain is moving quickly in terms of research. You can explore many fresh and cool concepts, such as deepfakes and 3D human pose estimation (machine vision...