Consider a corpus of documents covering a range of subjects. In topic modelling, words are often used as the features to represent each document. The model then groups words that frequently appear together into a topic. For example, words like “team”, “match”, “game”, and “score” might be grouped into a topic that could be labelled as SPORT, while words such as “attorney”, “case”, “law”, and “crime” might form a separate topic labelled LEGAL. These groupings allow analysts to infer the predominant themes within the documents.
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