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In recently years, many people easily access Internet auctions in e-commerce trading. At the same time, network structures like the WWW have become huge and are analyzed on a grand scale. In Internet auctions, users face the problem of really knowing the credit and trustworthiness of participants, and the simple rating mechanism widely used in Internet auctions fails to represent this accurately....
Change-point detection schemes, which represent one type of anomaly detection schemes, are a promising approach for detecting network anomalies, such as attacks and epidemics by unknown viruses and worms. These events are detected as change-points. However, they generally also detect false-positive change-points caused by other events, such as hardware problems. Therefore there is a requirement for...
As Internet auctions have increased, so too has auction fraud. This paper describes the design of a system that supports fraud detection and market prediction by visualizing transaction networks on Internet auctions. Our system employs link mining techniques and user information. At this stage, we successfully showed visualized trading networks by extracting trading histories from an auction site...
In this paper, we discuss the "free-riding" traffic problem in routing overlay networks, which is mainly caused by a policy mismatch between the overlay routing and the underlay IP routing. We first define the free-riding problem in a routing overlay network, and construct mathematical models to calculate the amount of the free-riding traffic in routing overlay networks with various path-selection...
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