[EN] This paper presents a new method for fraud detection in credit cards based on exploiting the dynamics of the card transactions. We hypothesize different behavior models in the use of the card between legitimate clients ...
Soriano Tolosa, Antonio; Vergara Domínguez, Luís; Ahmed, B.; Salazar Afanador, Addisson(Massachusetts Institute of Technology Press (MIT Press): STM Titles, 2015-08)
We present a new method for fusing scores corresponding to different detectors (two hypotheses case). It is based on alpha integration, which we have adapted to the detection context. Three optimization methods are presented: ...
Salazar Afanador, Addisson; Safont, Gonzalo; Vergara Domínguez, Luís; Vidal, Enrique(Institute of Electrical and Electronics Engineers, 2023)
[EN] This paper presents a theoretical derivation of two new graph-based regularization methods for fusing the individual results of multiple detectors (two-class classifiers). The proposed approach considers linear ...
[EN] Alpha integration methods have been used for integrating stochastic
models and fusion in the context of detection (binary classification). Our work proposes separated score integration (SSI), a new method based on ...
[EN] Decision fusion consists in the combination of the outputs of multiple classifiers into a common decision that is more precise or stable. In most cases, however, only classical fusion techniques are considered. This ...
[EN] Alpha integration is a family of integrators that encompasses many classic fusion operators (e.g., mean, product, minimum, maximum) as particular cases. This paper proposes vector score integration (VSI), a new alpha ...