Abstract: A system and method for detecting fraudulent transactions of incremental transactions via incrementally training classifiers on a number of data subsets to obtain transaction label predictions. Recent information on fraudulent transactions is implemented to update the classifiers, thereby eliminating the problems of concept drift and verification latency. Some of the incremental transactions may be labeled as fraudulent according to the incrementally modified classifiers and thereby rejected.

Abstract: A system and method for detecting fraudulent transactions of incremental transactions via incrementally training classifiers on a number of data subsets to obtain transaction label predictions. Recent information on fraudulent transactions is implemented to update the classifiers, thereby eliminating the problems of concept drift and verification latency. Some of the incremental transactions may be labeled as fraudulent according to the incrementally modified classifiers and thereby rejected.

Abstract: A method for processing an electronic bill payment with a user-specific electronic device in operative communication with a digital wallet bill management system running on centralized processors in operative communication with databases and in networked communication with digital wallet applications, computerized billing systems and payment gateways. The user-specific electronic device has a digital wallet application that stores funding and biller e-cards associated with funding and billing accounts for a customer's financial institutions and billers, respectively. The user-specific electronic device includes a web browser application connecting the e-cards to the digital wallet bill management system depending on a selected payment option for a biller's digital bill received in the digital wallet.