For more information, see also the following links!

▎ENGLISH
Text Analytics Functions Explained ▸ https://www.lexalytics.com/lexablog/text-analytics-functions-explained
Text Mining Wikipedia ▸ https://en.wikipedia.org/wiki/Text_mining
What is Text Mining? ▸ https://monkeylearn.com/text-mining/

▎日 本 語
テキストをトークン化するための正規表現 ▸ https://qiita.com/kagamizono/items/321952eb69d3c0ca63df
「テキストマイニング」をわかりやすく解説 ▸ https://data-viz-lab.com/textanalytics
ステミングとは？▸  https://chalow.net/2008-01-20-1.html