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

Implementing the rule-based chatbot


In this section, we will understand the implementation of the chatbot. This implementation is divided into two parts. You can find this code by visiting: https://github.com/jalajthanaki/Chatbot_Rule_Based:

  • Implementing the conversation flow

  • Implementing RESTful APIs using flask

Implementing the conversation flow

In order to implement the conversation logic, we are writing a separate Python script, so that whenever we need to add or delete some logic it will be easy for us. Here, we create one Python package in which we put this conversation logic. The name of the file is conversationengine.py and it uses JSON, BSON, and re as Python dependencies.

In this file, we have implemented each conversation in the form of a function. When the user opens the chatbot for the first time, a welcome message should pop up. You can refer to the code given in the following screenshot:

Figure 8.9: Code snippet for the welcome message

Now the users need to type in Hi in order to...