Laboratoire de Physique Théorique et Modélisation, UMR8089 CNRS, Université de Cergy-Pontoise, Cergy-Pontoise, France.
Ecole Nationale des Ponts et Chaussées (ENPC), C.A.M.S.-EHESS, UMR CNRS 8557, Paris, France.
PLoS One. 2018 May 7;13(5):e0196206. doi: 10.1371/journal.pone.0196206. eCollection 2018.
Centralized markets are often considered more efficient than bilateral exchanges because information is public and the same for all the agents. On decentralized markets, where the information is private, the influence of trust on the market outcome has been underlined by many authors. We present an empirical study of the distinctive Boulogne-sur-Mer Fish Market (where both buyers and sellers can choose to trade by either bidding or bargaining), focused on the interactions between agents. Our approach is inspired by studies of mutualistic ecosystems, where the agents are of two different types (as in plant-pollinator networks) and the interactions only take place between agents of different kinds, naturally providing benefits to both. In our context, where the two kinds of agents are buyers and sellers, our study shows that not only do their interactions bring economic benefits for the agents directly involved, but they also contribute to the stability of the market. Our results help to explain the surprising coexistence of the two forms of market in the distinctive Boulogne sur Mer Fish Market.
集中市场通常被认为比双边交易所更有效率，因为信息是公开的，对所有参与者都是一样的。在去中心化市场中，信息是私人的，许多作者强调了信任对市场结果的影响。我们对布隆涅-比扬古鱼市（买卖双方都可以选择通过竞价或讨价还价进行交易）进行了一项实证研究，重点关注参与者之间的互动。我们的方法受到共生生态系统研究的启发，其中参与者有两种不同的类型（如植物-传粉者网络），只有不同类型的参与者之间才会发生相互作用，这自然会给双方带来好处。在我们的背景下，两种类型的参与者是买家和卖家，我们的研究表明，不仅他们的互动直接为参与的双方带来了经济利益，而且还有助于市场的稳定。我们的研究结果有助于解释在布隆涅-比扬古鱼市中两种市场形式令人惊讶的共存。
