In grammar, a part of speech or part-of-speech (POS) is known as word class or grammatical category, which is a category of words that have similar grammatical properties. If it is difficult, then what approaches do we have?īefore discussing the tagging approaches, let us literate ourselves with the required knowledge about the words, sentences, and different types of POS tags. That is why it is very difficult to have a generic mapping for POS tags. It is quite possible for a single word to have a different part of speech tag in different sentences based on different contexts. The relationship of “back” with adjacent and related words in a phrase, sentence, or paragraph is changing its POS tag. In the below sentences focus on the word “back” : ![]() Let’s understand this by taking an easy example. ![]() Simply put, In Parts of Speech tagging for English words, we are given a text of English words we need to identify the parts of speech of each word.Īlthough it seems easy, Identifying the part of speech tags is much more complicated than simply mapping words to their part of speech tags. ![]() The particular POS tag of a word can be used as a feature by various Machine Learning algorithms used in Natural Language Processing. POS tagging could be the very first task in text processing for further downstream tasks in NLP, like speech recognition, parsing, machine translation, sentiment analysis, etc. Part-of-speech (POS) tagging is an important Natural Language Processing (NLP) concept that categorizes words in the text corpus with a particular part of speech tag (e.g., Noun, Verb, Adjective, etc.)
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