Various approaches used in Agent-based Computational Economics (ACE) to model endogenously determined interactions between agents are discussed. This concerns models in which agents not only (learn how to) play some (market or other) game, but also (learn to) decide with whom to do that (or not).

Companies and capitals may face different variants of European markets, being necessary to classify these markets by establishing their importance within the whole strategy of the company. Another goal is the wish to cover as many of these markets as possible under maximum efficiency conditions...

ResumenEn este trabajo se busca identificar la dependencia que existe entre la publicidad que tiene que hacer una empresa y sus ventas. Sabiendo esta medida de cantidad demandada depende tanto de su precio como en sus gastos publicitarios. Muchas de las empresas pueden crear barreras a la...

This paper examines 4 million daily price observations for over 1000 consumer electronics products on the price comparison site Shopper.com. We find little support for the notion that prices on the Internet are converging to the “law of one price.” In addition, observed levels of price...

Using data from one of the Internet’s leading price comparison sites for consumer electronics products, we present evidence for the persistence of price dispersion for 36 homogeneous products. The markets for these products are “thick” with an average of over 20 firms selling each product....

Economic theory indicates that E-retailers competing at price comparison sites, such as Shopper.com, must charge prices that cannot be systematically predicted by their rivals. Consistent with theory, we find significant variation in the identity of the lowprice firm as well as the level of the...

Many firms face a dynamic trade-off: if price is reduced, the firm attracts new customers who will yield profits in the future, but it also forgoes the opportunity to squeeze profits now from loyal customers. This paper identifies a rule that represents the optimal resolution of this trade-off,...

We model a homogeneous product environment where identical e-retailers endogenously engage in both brand advertising (to create loyal customers) and price advertising (to attract 'shoppers'). Our analysis allows for 'cross-channel' effects; indeed, we show that price advertising is a substitute...

The market values of online platforms, such as Yahoo, stem from their ability to monetize the clicks they generate for firms advertising on their sites. We exploit a unique dataset on clicks from one of Yahoo's price comparison sites to estimate the determinants of clicks received by online...

Price advertisement by retail stores is pervasive. If there exist non-negligible costs of consumer search, a retailer can increase the number of consumers visiting its location by advertising a low price, thus increasing consumers' expected utilities from search. If the increase in the number of...