http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Learn about term frequency-inverse document frequency in text analysis in R with data from How ISIS uses Twitter dataset (2016)
This dataset is designed for teaching the TFIDF in text analysis. The dataset is a subset of data derived from the 2016 How ISIS Uses Twitter dataset, and the example demonstrates how TFIDF scores reveal words that are representative of a document and distinguish the document from others. The dataset file is accompanied by a Teaching Guide, a Student Guide, and a How-to Guide for R.
Includes bibliographical references and index.