Sony Corporation

Francisco Fatore

Francesco Cartella

Erbin Lim

Barbara Jochems

Conor Aylward

Orlando Anunciacao

Olivier Elshocht

Johan Duyshaver

Embodiments of the present disclosure relate to a method, an apparatus and a computer program for providing a machine-learning system to be used for classifying transactions as either fraudulent or genuine, and a method, an apparatus and a computer program for classifying transactions as either fraudulent or genuine. The method for generating a machine-learning system for classifying transactions as either fraudulent or genuine based on a plurality of training transactions, each training transaction being associated with labelling information that indicates whether the training transaction is either genuine or fraudulent, comprises clustering the plurality of training transactions into a plurality of clusters based on a similarity measure. The method comprises determining, for each of the plurality of clusters, whether the cluster is homogeneous or heterogeneous. A heterogeneous cluster includes both fraudulent and genuine training transactions. A homogeneous cluster includes either only fraudulent or only genuine training transactions. The method comprises, for each of the heterogeneous clusters, training an associated machine-learning model using the training transactions belonging to the respective heterogeneous cluster.

Method, apparatus and computer programs for generating a machine-learning system and for classifying a transaction as either fraudulent or genuine

The disclosure relates to a method () for assessing user authorization, the method comprising: receiving (), via a data communication network (), a request from a user device () for an access; generating (), based on data associated with the request, a risk score indicating a risk that the request was sent by a non-authorized user, wherein the risk score indicates a high risk, a medium risk, or a low risk that the user () is a non-authorized user; and signaling (), via the data communication network (), the user device () a need for further information to enable a decision about the authorization of the user (), if the risk score indicates medium risk. A further aspect relates to a method () for user authorization and to an electronic device ().

Methods and devices for user authorization

Growing community of inventors

Stuttgart, Germany

Francisco Fatore