Part-of-speech tagging also known as grammatical tagging or wordcategory
disambiguation is the process of assigning a word in the text corresponding to a particular part of speech like noun, verb, pronoun, preposition, adverb, adjective or other lexical class marker to each word in a sentence.
The input to a tagging algorithm is a string of words of a natural language sentence and a specified tagset (a finite list of Part-ofspeech tags). The output is a single best POS tag for each word. Tags play an important role in Natural language applications like
speech recognition, natural language parsing and information retrieval.
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