Paper label supplementing method and device based on natural language and storage medium

The embodiment of the invention discloses a paper label supplementing method and device based on a natural language, equipment and a storage medium, and belongs to the technical field of paper text processing. The method comprises the steps that science and technology text resources to be subjected to label classification are acquired; performing classification label selection by using a hierarchical selection mode, and obtaining a classification label set; carrying out expansion processing on elements in the classification tag set based on a part-of-speech analysis mode, and obtaining a tag expansion set; screening the elements in the label expansion set based on a preset screening mode, and taking the remaining elements in the screened label expansion set as a final prediction set; and comparing the elements in the final prediction set with the classification label set in the classification target space, judging whether new elements appear in the final prediction set or not, and if the new elements exist, a