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Keyword extraction is often used to extract key information from a series of paragraphs or documents. Such keyword extraction is an automated text analysis method of extracting the most relevant words and phrases from text input, which involves automatically extracting the most important words and expressions from a page.

Python keyword extraction methods include:
         i) Rake_NLTK. (page4314)
         ii) Spacy.
         iii) Textrank.
         iv) Word cloud.
         v) KeyBert.
         vi) Yake.
         vii) MonkeyLearn API.
         viii) Textrazor API.

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