نتایج جستجو برای: credit card fraud detection

تعداد نتایج: 621589  

Journal: :Journal of Applied Data Sciences 2021

The use of credit cards for online purchases has increased dramatically and led to an explosion in card fraud. Credit companies need be able identify fraudulent transactions so that customers are not charged items they do buy. In this study, we will semi-supervised learning combine it with AutoEncoders transactions. paper, implement the T-SNE visualize fraud non-fraud transactions, then improve...

Journal: :Expert Syst. Appl. 2015
Alejandro Correa Bahnsen Djamila Aouada Björn E. Ottersten

Several real-world classification problems are example-dependent cost-sensitive in nature, where the costs due to misclassification vary between examples. However, standard classification methods do not take these costs into account, and assume a constant cost of misclassification errors. State-of-the-art example-dependent cost-sensitive techniques only introduce the cost to the algorithm, eith...

2011
Lige Liu Xiaoyi Jin Melissa J. Brown Marcus W. Feldman

Since the 1990s, inter-provincial female migration for marriage has become important in central and eastern rural China. Using survey data from X County in rural Anhui Province, we explore the arrangement of inter-provincial marriages, as well as the characteristics of husbands and wives, marital satisfaction and marital stability for these marriages. We find that inter-provincial marriage is a...

2015
Laila Dahabiyeh

This research-in-progress paper reports on a project that seeks to develop a new process perspective on incentive mechanisms in cybercrime prevention networks. Adopting such a view is of great importance given the continuous innovations in cybercrime that makes fighting it a constant endeavour, involving actors from multiple networks. To this end, we zoom in on specific prevention encounters oc...

Journal: :Knowledge and Information Systems 2022

Abstract The state-of-the-art feature-engineering method for fraud classification of electronic payments uses manually engineered feature aggregates, i.e., descriptive statistics the transaction history. However, this approach has limitations, primarily that being dependent on expensive human expert knowledge. There have been attempts to replace manual aggregation through automatic extraction a...

Journal: :ITM web of conferences 2023

It is the time of technology advancement. Due to internet everything available at touch a finger. There benefit online shopping: first it saves lots and second does not demand go market buy anything. exists various mode payments credit card payment one them. Today, there good number users in world. Every day so many cards transactions are taken place. Some these fraudulent. such fraudulent bank...

2016

"Still another Student's Surgery!" we grumble as we open this rather striking little work; and we proceed to grumble generally about the superficiality of the age we live in, the tendency to skim the surface instead of digging the depths, and we make specific applications. Surgery grows and grows; and surgical "students'" books get smaller and smaller. Instead of trying to educate our men up to...

2003
Rodger Jamieson Kenneth J. Stevens Peter Luckett Kim Langfield-Smith Warwick Sarre Henry Pontell Suresh Cuganesan David Lacey Michael Briers

Identity fraud is recognised as a serious and significant problem in Australia by Government and industry, with estimates of losses ranging up to $4 billion per annum. This paper presents details of a research project which aims to research identity fraud from an organisational, information systems, and social perspective by investigating control, management and policy alternatives. Outcomes wi...

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