Book Image

Machine Learning Techniques for Text

By : Nikos Tsourakis
Book Image

Machine Learning Techniques for Text

By: Nikos Tsourakis

Overview of this book

With the ever-increasing demand for machine learning and programming professionals, it's prime time to invest in the field. This book will help you in this endeavor, focusing specifically on text data and human language by steering a middle path among the various textbooks that present complicated theoretical concepts or focus disproportionately on Python code. A good metaphor this work builds upon is the relationship between an experienced craftsperson and their trainee. Based on the current problem, the former picks a tool from the toolbox, explains its utility, and puts it into action. This approach will help you to identify at least one practical use for each method or technique presented. The content unfolds in ten chapters, each discussing one specific case study. For this reason, the book is solution-oriented. It's accompanied by Python code in the form of Jupyter notebooks to help you obtain hands-on experience. A recurring pattern in the chapters of this book is helping you get some intuition on the data and then implement and contrast various solutions. By the end of this book, you'll be able to understand and apply various techniques with Python for text preprocessing, text representation, dimensionality reduction, machine learning, language modeling, visualization, and evaluation.
Table of Contents (13 chapters)

Summary

This chapter dealt with the topic of the recommender systems that are ubiquitous on our daily journeys online. Compared to the previous chapters, we didn’t perform any classification tasks; instead, we focused on the most noteworthy techniques in ML for implementing recommender systems. Utilizing a corpus of Amazon reviews, we tried to elicit customized suggestions for music titles.

To wrap up, in the first part of the chapter, we performed the necessary data cleaning to eliminate corrupted data that would affect the quality of the developed systems. Then, we manipulated the dataset to make it suitable for the analysis that followed. We also enhanced our arsenal of data visualization methods with new types of plots.

In the second part, we attacked the problem by focusing on the properties of products or customer ratings. We then detailed the suitable methods for both cases and implemented various recommenders. Simultaneously, we broadened our coverage of dimensionality...