SHARING OF SECRETS WITHOUT TRUSTED INITIALISER Russian patent published in 2020 - IPC G06F16/9536 

FIELD: data processing.

SUBSTANCE: invention relates to means of updating user feature data. Ratings platform and product recommendations are used to identify ratings data containing corresponding ratings of multiple items from multiple users. Using the rating platform and product recommendations, identifying user feature data containing a plurality of user features which affect the respective plurality of items from multiple users are identified. Receiving from a social network platform through a rating platform and product recommendations through a sharing scheme of secrets without a trusted initialiser, a plurality of manipulated social network data calculated based on social network data and a first number of random variables. Data of social networks indicate social relations between any two of multiple users, wherein in a sharing scheme of secrets without a trusted initialiser, a social network platform shares with the rating platform and product recommendations a plurality of manipulated social network data without disclosing social network data. Updating, using platform rating and recommendations on products, user feature data based on rating data and multiple manipulated social network data.

EFFECT: technical result consists in improvement of prediction of users need and provision of providing targeted recommendations for users.

20 cl, 5 dwg