Method and system for constructing text label system, method and system for completing iteration and storage medium

The invention belongs to the field of natural language processing, and relates to a method and a system for establishing a text label system and completing iteration, and a storage medium. The methodcomprises the following steps that firstly, a label system is preliminarily built, class labels are concluded, at least one feature word used for describing labels is configured for each label, and aprimary label system and a configuration word bank of the primary label system are formed; the label system is verified and coverage conditions of the current label system and the configuration lexicon thereof are evaluated; the label system is improved and text clustering and information extraction are carried out on the text data which is not covered by the configuration word bank of the currentlabel system again to obtain a new batch of feature words and description words; and the current label system is compared with the configuration word bank thereof based on the text similarity to merge the feature words with hi