نتایج جستجو برای: credit cards fraud detection
تعداد نتایج: 610495 فیلتر نتایج به سال:
Credit card fraud jeopardizes the trust of customers in e-commerce transactions. This led recent years to major advances design automatic Fraud Detection Systems (FDS) able detect fraudulent transactions with short reaction time and high precision. Nevertheless, heterogeneous nature behavior makes it difficult tailor existing systems different contexts (e.g. new payment systems, countries and/o...
In this paper we show that accurate HMMs for connected word recognition can be obtained without context dependent modeling and discriminative training. We train two HMMs for each word that have the same, standard, left to right topology with the possibility of skipping one state, but each model has a different number of states, automatically selected. The two models account for different speaki...
Epilepsy patients experience challenges in daily life due to precautions they have to take in order to cope with this condition. When a seizure occurs, it might cause injuries or endanger the life of the patients or others, especially when they are using heavy machinery, e.g., deriving cars. Studies of epilepsy often rely on electroencephalogram (EEG) signals in order to analyze the behavior of...
This Appendix contains an overview of debt collection technologies in the U.S. and its recent evolution. In the first section we summarize how debt is collected in the U.S. Section 2 focuses on collection technology and its recent evolution. The last section describes the data sources used in the analysis. 1 Overview of the Debt Collection Process in the US We briefly describe the debt collecti...
Online payments in business-to-consumer electronic commerce are mainly made with credit cards. Fraud and chargebacks are a significant issue for merchants and payment card brands, due to widespread use of unsecured or partially secured credit card transactions. The Secure Electronic Transaction (SET) protocol may not only provide a high security level. It also enables productivity improvements ...
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