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Wyszukujesz frazę "online reputation" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Mining online auction social networks for reputation and recommendation
Autorzy:
Morzy, M.
Wierzbicki, A.
Papadopoulos, A. N.
Powiązania:
https://bibliotekanauki.pl/articles/970827.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
online auctions
reputation
recommendations
Opis:
Online auctions are quickly becoming one of the leading branches of e-commerce. Unfortunately, online auctions attract many fraudulent activities. Reputation systems are crucial for guaranteeing fairness of trade and reliability of service. Currently used reputation systems offer little protection from malevolent contractors. In this paper we present a new method for mining the reputation of sellers in online auctions. We devise two independent measures that assess reliability and questionability of sellers in parallel, leading to the concept of positive and negative reputation. To compute these measures we construct an S-graph which reflects the social linkage between sellers and buyers. We use both explicit and implicit feedbacks provided by auction participants, carefully identifying missing feedbacks that have been purposefully left out. Based on reputation estimates the community of online auction participants can detect misbehaving contractors and counteract fraud. Thus, the application of social information about reputation of contractors can be perceived as recommendations. Experimental evaluation of our proposal proves the feasibility and usefulness of the presented approach.
Źródło:
Control and Cybernetics; 2009, 38, 1; 87-106
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asymptotic trust algorithm: extension for reputation systems in online auctions
Autorzy:
Leszczyński, K.
Zakrzewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/206059.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
online auction sites
reputation system
trust management
web mining
Opis:
Online auctions have become a big business and the number of auction site users is growing rapidly. These virtual marketplaces give traders a lot of opportunities to find a contracting party. However, lack of physical contact between users decreases the degree of trust. Auction portals require an efficient mechanism for building trust between participants, whereas most of them provide simple participation counts for reputation rating. Moreover, a single opinion has virtually no effect on a big online store that already has many reputation points, so buyers are very hesitant to give negative feedback for fear of retaliation. Consequently, almost no negative feedback is provided1. In this paper we introduce a new trust system called Asymptotic Trust Algorithm (ATA) which prevents many fraud attempts and still is both simple and easy to understand for most users. Our new method can be applied in addition to the participation counts systems currently used by Allegro, eBay and most of other online auction sites because it does not require any additional information other than positive, negative or neutral feedback on transactions. Most importantly, ATA encourages users to submit unbiased comments, regardless of the number of previous transactions.
Źródło:
Control and Cybernetics; 2011, 40, 3; 651-666
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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