Text classification model training method and device and text classification method and device

The embodiment of the invention provides a training method of a text classification model and a text classification method and device. The training method of the text classification model comprises the steps that a sample data set is obtained, and the sample data set comprises description information of a text and category labels of multiple dimensions marked by the text; pre-training description information of the text in the sample data set by using the pre-training word vector, and determining initial representation information of the text in the sample data set; training a text classification model by using the initial representation information of the text in the sample data set; wherein the text classification model adopts comparative learning to carry out comparative correlation specification on the arrangement relation of the category labels of multiple dimensions. Through the mode, the comparison correlation of the arrangement relation of the category labels of different dimensions is standardized, s