英文标题：
《Modelling Trading Networks and the Role of Trust》
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作者：
Rafael A. Barrio, Tzipe Govezensky, \\\'Elfego Ruiz-Guti\\\'errez, Kimmo
K. Kaski
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最新提交年份：
2016
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英文摘要：
We present a simple dynamical model for describing trading interactions between agents in a social network by considering only two dynamical variables, namely money and goods or services, that are assumed conserved over the whole time span of the agents\' trading transactions. A key feature of the model is that agent-to-agent transactions are governed by the price in units of money per goods, which is dynamically changing, and by a trust variable, which is related to the trading history of each agent. All agents are able to sell or buy, and the decision to do either has to do with the level of trust the buyer has in the seller, the price of the goods and the amount of money and goods at the disposal of the buyer. Here we show the results of extensive numerical calculations under various initial conditions in a random network of agents and compare the results with the available related data. In most cases the agreement between the model results and real data turns out to be fairly good, which allow us to draw some general conclusions as how different trading strategies could affect the distribution of wealth in different kinds of societies.
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中文摘要：
我们提出了一个简单的动态模型来描述社交网络中代理之间的交易交互，只考虑两个动态变量，即货币和商品或服务，假设它们在代理交易的整个时间跨度内是守恒的。该模型的一个关键特征是，代理对代理的交易由每种商品的货币单位价格（动态变化）和与每个代理的交易历史相关的信任变量控制。所有代理人都可以出售或购买，而决定出售或购买的决定取决于买方对卖方的信任程度、货物的价格以及买方可支配的金钱和货物的数量。在这里，我们展示了在随机代理网络中各种初始条件下的广泛数值计算结果，并将结果与可用的相关数据进行了比较。在大多数情况下，模型结果与实际数据之间的一致性相当好，这使我们能够得出一些一般性结论，即不同的贸易策略如何影响不同社会中的财富分配。
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分类信息：

一级分类：Physics 物理学
二级分类：Physics and Society 物理学与社会
分类描述：Structure, dynamics and collective behavior of societies and groups (human or otherwise). Quantitative analysis of social networks and other complex networks. Physics and engineering of infrastructure and systems of broad societal impact (e.g., energy grids, transportation networks).
社会和团体（人类或其他）的结构、动态和集体行为。社会网络和其他复杂网络的定量分析。具有广泛社会影响的基础设施和系统（如能源网、运输网络）的物理和工程。
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一级分类：Quantitative Finance 数量金融学
二级分类：General Finance 一般财务
分类描述：Development of general quantitative methodologies with applications in finance
通用定量方法的发展及其在金融中的应用
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