Natural language processing (NLP) is an important direction of computer science and artificial intelligence. It studies various theories and methods to realize effective communication between people and computers with natural language.

Natural language processing is a science that integrates linguistics, computer science and mathematics. Therefore, the research in this field involves natural language, that is, the language people use every day, so it is closely related to the study of linguistics, but there are important differences. Natural language processing is not the study of natural language in general, but the development of computer systems, especially software systems, that can effectively realize natural language communication. So it is a part of computer science.

Technical difficulties

Words between sentences in daily life usually do not exist in isolation, and all words in discourse need to be interrelated to express their corresponding meanings. Once a concrete sentence is formed, there will be a corresponding restrictive relationship between words. If there is no effective definition, the content will become ambiguous and cannot be effectively understood.

For example, he quietly went out to play behind his mother and sister's back. If the preposition "he" is not defined in this sentence, it is easy to form that mother and sister don't know that he goes out to play, or mother doesn't know that he goes out to play with her sister.