In this work, we study multiple item auctions in a setting where items are distinguished by their relative values; any pair of items have the same ratio of values to all buyers. Buyers have additive valuations for multiple items. The application we have in mind is that items are positions in an ad auction, and an item’s value corresponds to its click-through rate. Buyers have various per-click ...

Buyer-seller networks where price is determined by an ascending-bid auction are important in many economic examples such as certain real estate markets, radio spectrum sharing, and buyer-supplier networks. However, it may be that some sellers are better off not participating in the auction. We consider what happens if sellers can make a take it or leave it offer to one of their linked buyers be...

In current markets of perishable goods such as fish and vegetables, sellers are typically in a weak bargaining position, since perishable products cannot be stored for long without losing their value. To avoid the risk of spoiling products, sellers have few alternatives other than selling their goods at the prices offered by buyers in the markets. The market mechanism needs to be reformed in or...

A common practice in real estate markets is the sale of housing development units before completion, and in some cases even before beginning of the actual construction, known as presale. Developers that choose to presell units are subject to default on the part of the buyers if market conditions become unfavorable. In recent years, court rulings in Brazil have established that developers must r...

In an environment in which both buyers and sellers can undertake match specific investments, the presence of market competition for matches may solve hold-up and coordination problems generated by the absence of complete contingent contracts. In particular, this paper shows that when matching is assortative and sellers‘ investments precede market competition then investments are constrained eff...

each customer or consumer communicates with different markets with a specific decision-making style and these styles approximately remain constant over time. this research is done between tehran home appliance store customers with the aim of identifying the sproles and kendall’s model decision-making styles. sproles and kendall’s model has identified eight different decision-making styles, whic...

The Clark completion of a program is a way of making explicit the inferences which may be made from the program using the Negation as Failure (NAF) rule. This may be thought of as adding negative information to the program in such a way that an atom fails ii its negation is derivable from the completion of the program. We show how the completion process may be extended to hereditary Harrop form...

Reputation mechanisms at online opinion forums, such as Amazon Reviews, elicit ratings from their users about the experiences with products of unknown quality and critically rely on these ratings being truthful. The peer prediction method by Miller, Resnick and Zeckhauser is arguably the most prominent truthful feedback mechanism in the literature. An obstacle with regard to its application are...