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A complete guide to text processing using Twitter data and R. Text Processing and Sentiment Analysis of Twitter Data. The guide aims to help researchers get acquainted with computational text analysis in general, as well as getting a start at performing advanced text analysis studies in R. The best-known package repository, the Comprehensive R Archive Network (CRAN), currently has over 10,000 packages that are published. R was specifically designed for statistical analysis, which makes it highly suitable for data science applications. Twitter is an online microblogging tool that disseminates more than 400 million messages per day.