What is POS-tagging?

The obvious first step in understanding POS-tagging is to expand the acronym  Part-Of-Speech tagging. Now, that makes things a lot easier now, doesn't it? As the name suggests, it is the process of tagging words in a textual input with their appropriate part of speech. We've already discussed this before briefly, particularly when dealing with spaCy and its language models. So, while we know that POS-tagging refers to the action of tagging words with their POS, we haven't talked very much about what exactly a part of speech in natural language (and in particular, English) is, and why it might be relevant to us in the realm of text analysis.

Traditionally, a part of speech is a category of words which have similar grammatical ...

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