The invention provides a subject heading classification model creation method. The method comprises the steps that multiple model training documents are obtained, and
label terms of the model training documents are extracted; based on a similarity
algorithm, core theme phrases corresponding to the
label terms are obtained; based on a map content
library, a first model training document collection corresponding to the core theme phrases is obtained; based on a
machine learning
algorithm, the model training documents are subjected to sort operation; based on the map content
library, subject type identification of all the model training documents corresponding to the
label terms is obtained, and according to the subject type identification corresponding to the label terms, a second model training document collection corresponding to the label terms is determined; repetitive model training documents in the first model training document collection and the second model training document collection corresponding to the label terms are taken as positive samples, other model training documents in the map content
library are taken as negative samples, and a subject heading classification model of the label terms is created. The invention further provides a subject heading classification model creation device and a storage medium.