Intelligent recommendation method and device based on historical data, electronic equipment and medium

The invention relates to the technical field of artificial intelligence, and discloses an intelligent recommendation method based on historical data. The method comprises the steps: acquiring the historical data of a target user, and carrying out the data cleaning, and obtaining the cleaned data; classifying the cleaning data to obtain a cleaning data label set, and obtaining a classification label set from a preset label dictionary based on the cleaning data label set; training a preset classification model to obtain a trained classification model; acquiring the attribute of each classification label in the classification label set from the historical data by utilizing the training classification model, and constructing a user portrait according to the acquired attribute of the classification label; and recommending information to the target user according to the user portrait. The invention also relates to a block chain technology, and the user portrait can be stored in a block chain node. The invention fur