منابع مشابه
Detecting online auction shilling frauds using supervised learning
Online auction sites are a target for fraud due to their anonymity, number of potential targets and low likelihood of identification. Researchers have developed methods for identifying fraud. However, these methods must be individually tailored for each type of fraud, since each differs in the characteristics important for their identification. Using supervised learning methods, it is possible ...
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An analogue of Vickrey’s (1961) multi-unit auction is provided when bidders have interdependent values and one-dimensional private information. The analogue is strategically equivalent to a collection of two-bidder single-unit second-price auctions and it possesses an e¢cient ex-post equilibrium. ¤ We wish to thank Larry Ausubel for very helpful discussions. We also thank three referees and the...
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Online-auctions are one of the most successful types of electronic markets. They bring together buyers and sellers on a massive scale. However, using an electronic medium for conducting auctions has fundamental differences from traditional English-style auctions. One difference is the availability of software agents that can facilitate many aspects of online-auction participation. The addition ...
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In last three decades the attacks against the personal information, social information and financial information become more frequent and sophisticated. Initially, the purpose of cyber attack was the entertainment but as scenario has changed, internet is now seen as wonderful tool to conduct fraud or to grasp the information about anyone else. The paper shows how internet is important for cyber...
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Any business that operates on the Internet and accepts payments through debit or credit cards, also implicitly accepts that some transaction may be fraudulent. The design of effective strategies to face this problem is challenging, due to factors such as the heterogeneity and the non stationary distribution of the data, as well as the presence of an imbalanced class distribution, and the scarci...
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ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2013
ISSN: 0975-8887
DOI: 10.5120/10000-4863