« Journal of Statistics Education | Main | Topology of the World Trade Web »
juli 31, 2003
Emergens i online-auktioner (Barabasi)
I Emerging behavior in electronic bidding av bl.a. Barabasi undersöks elektroniska auktioner, bl.a. eBay. Man har funnit power-law-beteende i budgivningsbeteendet, vilket här innebär att några få spelare domininerar, och därmed påverkar, budgivningarna.
Abstract: We characterize the statistical properties of a large number of agents on two major online auction sites. The measurements indicate that the total number of bids placed in a single category and the number of distinct auctions frequented by a given agent follow power-law distributions, implying that a few agents are responsible for a significant fraction of the total bidding activity on the online market. We find that these agents exert an un-proportional influence on the final price of the auctioned items. This domination of online auctions by an unusually active minority may be a generic feature of all online mercantile processes.
Uppdatering: Upptäckte något senare att Nature skriver kort om detta i Auctions made more efficient. Huvuddelen av artikeln handlar om ett sätt att optimera auktioner.
Posted by hakank at juli 31, 2003 03:52 EM Posted to Komplexitet/emergens | Social Network Analysis/Complex Networks