"Natural language processing" generally refers to all meaningful operations and analysis of human natural language, including word segmentation operations, part of speech tagging, word meaning tagging, collocation tagging, grammatical analysis, semantic analysis, pragmatic analysis, paragraph analysis, text analysis, and various corresponding linguistic statistics, such as word frequency statistics, word frequency statistics, feature extraction, keyword recognition, phrase recognition Recognition of proper nouns, statistics and extraction of language models, recognition of function words, representation of sentences, correlation calculation of sentences, and extraction of various typical sentence samples and linguistic rules from corpus of a large-scale corpus are all familiar topics. The specific content of natural language processing in different situations will of course vary depending on the application goals. 

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