Modeling method of multi-task model, promotion content processing method and related device

The invention provides a modeling method of a multi-task model, a promotion content processing method and a related device, and relates to the technical field of artificial intelligence. The modeling method of the multi-task model comprises the steps of obtaining features used for constructing tasks, and constructing an initial task set according to the features used for constructing the tasks; determining mutual information among different tasks in the initial task set; according to the mutual information between the different tasks, a related task set is obtained, and the mutual information of the tasks included in the related task set meets a first preset condition; and according to the features corresponding to each task in the related task set, generating a sample of a multi-task model, and performing model training by using the sample of the multi-task model to obtain the multi-task model. Therefore, by means of the method, the multiple tasks in the multi-task model have high correlation, and the learni