Электронная книга: Simon Munzert «Automated Data Collection with R. A Practical Guide to Web Scraping and Text Mining»
A hands on guide to web scraping and text mining for both beginners and experienced users of R Introduces fundamental concepts of the main architecture of the web and databases and covers HTTP, HTML, XML, JSON, SQL. Provides basic techniques to query web documents and data sets (XPath and regular expressions). An extensive set of exercises are presented to guide the reader through each technique. Explores both supervised and unsupervised techniques as well as advanced techniques such as data scraping and text management. Case studies are featured throughout along with examples for each technique presented. R code and solutions to exercises featured in the book are provided on a supporting website.
Издательство: "John Wiley&Sons Limited"
ISBN: 9781118834787 электронная книга Купить за 6177.33 руб и скачать на Litres
Купить за 6177.33 руб и скачать на Litres
Look at other dictionaries:
Web crawler — For the search engine of the same name, see WebCrawler. For the fictional robots called Skutters, see Red Dwarf characters#The Skutters. Not to be confused with offline reader. A Web crawler is a computer program that browses the World Wide Web… … Wikipedia