Urban waterlogging-prone point information recommendation method based on government affair user portraits

The invention discloses a city waterlogging-prone point information recommendation method based on government affair user portraits, and the method comprises the steps: constructing a government affair user feature tag and interest tag system, and extracting government affair user basic feature tags based on government affair user basic information; basic feature vectors of the government affair users and long-term interest vectors and short-term interest vectors of the government affair users on the urban waterlogging-prone point information are calculated, and weighted fusion is carried out on the long-term interest vectors and the short-term interest vectors of the government affair users to obtain interest vectors of the government affair users on the urban waterlogging-prone point information; connecting an urban waterlogging-prone point information database, and constructing a data item feature vector; and calculating the similarity between the user interest and the data feature by using the interest ve