In this paper, we develop a detailed bidding strategy for selling agents in electronic marketplaces, in a setting where buyers and sellers have incentives to be honest, due to a particular framework for trust modeling. In our mechanism, buyers model other buyers and select the most trustworthy ones as their neighbours to form a social network which can be used to ask advice about sellers. In ad...

Olivier Bessard-Banquy, Sylvie Ducas et Alexandre Gefen (dir.), Best Sellers. L’industrie du succès, Malakoff : Armand Colin, 2021, 456 p., ISBN 978-2-200-62932-8 (broché)

A buyer of a divisible good faces several identical sellers. The buyer’s preferences are her private information, and they may directly affect the sellers’ profits (common values). Sellers compete by posting menus of nonexclusive contracts, so that the buyer can simultaneously and privately trade with several sellers. We focus on the finitetype case, and we provide a full characterization of pu...

Three experiments investigated the relations between buyers’ wealth or ability to pay (ATP) and sellers’ first offers. Study 1 demonstrated a positive correlation between sellers’ first offers and their perceptions of the buyer’s ATP as well as its real economic power (indicated by the company’s market value). In Study 2, sellers in a field experiment made higher offers to potential buyers of h...

Dynamism of trade activity inevitably results in situations where sellers face local supply shortages. In such cases, sellers need to decide which buyer purchase requests to satisfy. Commonly, sellers satisfy purchase requests based on their arrival order, i.e., First In is First Served (FIFS). In electronic trade, sellers may follow strategies diier-ent from FIFS without the buyers being able ...

This thesis work is in the area of modeling trust in multi-agent systems, systems of software agents designed to act on behalf of users (buyers and sellers), in applications such as e-commerce. The focus is on developing an approach for buyers to model the trustworthiness of sellers in order to make effective decisions about which sellers to select for business. One challenge is the problem of ...