Method, device and terminal for inference model training and credit attribute inference

The embodiment of the invention discloses an inference model training and credit attribute inference method and device and a terminal. Determining a plurality of sample user features of the plurality of sample users and a prior credit attribute corresponding to each sample user feature, and determining a loss weight of each sample user feature, the loss weight of each sample user feature being positively correlated with a confidence coefficient of the prior credit attribute; inputting all the sample user features into an initial inference model, controlling the initial inference model to output a predicted credit attribute of each sample user feature, and adjusting parameters of the initial inference model according to the predicted credit attributes, the prior credit attributes and the loss weights of all the sample user features; and updating a prior credit attribute and a loss weight of a target sample user feature meeting a preset updating condition in all the sample user features based on the adjusted in