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Ranking of query is one of the fundamental problems in information retrieval (IR), [1] the scientific/engineering discipline behind search engines. [2] Given a query q and a collection D of documents that match the query, the problem is to rank, that is, sort, the documents in D according to some criterion so that the "best" results appear early in the result list displayed to the user.
A reputation system is a program or algorithm that allow users of an online community to rate each other in order to build trust through reputation.Some common uses of these systems can be found on E-commerce websites such as eBay, Amazon.com, and Etsy as well as online advice communities such as Stack Exchange. [1]
eBay office in Toronto, Canada. eBay Inc. (/ ˈ iː b eɪ / EE-bay, often stylized as ebay or Ebay) is an American multinational e-commerce company based in San Jose, California, that allows users to buy or view items via retail sales through online marketplaces and websites in 190 markets worldwide.
Curious about the most expensive items sold on eBay? From a gigayacht to a U.S. town, here are 10 of the most extravagant listings we could find.
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This is a list of most-visited websites worldwide as of February 2025, along with their change in ranking compared to the previous month. List This is a dynamic list and may never be able to satisfy particular standards for completeness.
Fees charged to sellers; 168 [12] Farmigo: Palo Alto, CA, US Farm products 2009 26,000,000 35% mark-up; 120 [13] Fiverr: Tel Aviv, Israel Creative services 2010 110,000,000 [14] [15] Marketplace for creative digital services sold as Gigs. Millions of Gigs available from Sellers to Buyers. Fiverr charges a flat 20% fee to the Seller. 398 [16 ...
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