Book Image

Java: Data Science Made Easy

By : Richard M. Reese, Jennifer L. Reese, Alexey Grigorev
Book Image

Java: Data Science Made Easy

By: Richard M. Reese, Jennifer L. Reese, Alexey Grigorev

Overview of this book

Data science is concerned with extracting knowledge and insights from a wide variety of data sources to analyse patterns or predict future behaviour. It draws from a wide array of disciplines including statistics, computer science, mathematics, machine learning, and data mining. In this course, we cover the basic as well as advanced data science concepts and how they are implemented using the popular Java tools and libraries.The course starts with an introduction of data science, followed by the basic data science tasks of data collection, data cleaning, data analysis, and data visualization. This is followed by a discussion of statistical techniques and more advanced topics including machine learning, neural networks, and deep learning. You will examine the major categories of data analysis including text, visual, and audio data, followed by a discussion of resources that support parallel implementation. Throughout this course, the chapters will illustrate a challenging data science problem, and then go on to present a comprehensive, Java-based solution to tackle that problem. You will cover a wide range of topics – from classification and regression, to dimensionality reduction and clustering, deep learning and working with Big Data. Finally, you will see the different ways to deploy the model and evaluate it in production settings. By the end of this course, you will be up and running with various facets of data science using Java, in no time at all. This course contains premium content from two of our recently published popular titles: - Java for Data Science - Mastering Java for Data Science
Table of Contents (29 chapters)
Title Page
Credits
Preface
Free Chapter
1
Module 1
15
Module 2
26
Bibliography

Machine learning for texts


Machine learning plays an important role in text processing. It allows to better understand the information hidden in the text, and extract the useful knowledge hidden there. We are already familiar with machine learning models from the previous chapters, and, in fact, we have even used some of them for texts already, for example, POS tagger and NER from Stanford CoreNLP are all machine learning based models.

In Chapters 4, Supervised Learning - Clasfication and Regression and Chapter 5, Unsupervised Learning - Clustering and Dimensionality Reduction we covered supervised and unsupervised machine learning problems. When it comes to text, both play an important role in helping to organize the texts or extract useful pieces of information. In this section, we will see how to apply them to text data.

Unsupervised learning for texts

As we know, unsupervised machine learning deals with cases when no information about labels is provided. For texts, it means just letting...