Prediction model training method and device, data analysis method and device and medium

The invention provides a prediction model training method and device, a data analysis method and device and a storage medium, and relates to the technical field of computers.The method comprises the steps that a training sample is generated based on a keyword vector set, a prediction model is constructed, a main task module is used, and the prediction model is constructed based on a keyword representation vector and a main task attention mask; obtaining a main task prediction result; performing mask processing on the main task prediction result by using each related task attention mask module to generate a related task attention mask; using a related task module to obtain a related task prediction result based on the keyword representation vector and the related task attention mask; and adjusting the prediction model based on the model loss function. According to the method and the device, the training amount can be reduced while the efficiency is improved, the weight distribution corresponding to the keyword