一个类似网络的学习市场模型

Tetyana Kudyk, V. Lisovska, Nadiya Shchekan
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摘要

本文讨论了产品市场的一个更简单的动态模型(称为“类网络模型”),以及该模型的一个修改版本,其中卖方设定市场价格。这些动态模型用离散一阶差分方程和差分方程系统来描述。该研究的重点是理解某些产品的动态市场模型的重要性,特别是网络和类似网络的市场模型与培训,这在文章中进行了检查。基于某些假设(在文章中进一步描述),提供了对这些模型的Valsar解释:市场由拍卖商监管,拍卖商最初宣布产品价格,然后买家和卖家执行协议,并将结果以供求量的形式传达给拍卖商。如果发现协议不平衡,拍卖师调整价格,试图恢复市场平衡。一旦达到平衡,就会达成最终协议。本文考虑了初始点与均衡点重合或不重合的情况,并分析了这些情况下的价格和产量趋势。推导出了一个公式,该公式确定了“蜘蛛模型”中价格变化的轨迹,表明市场价格将围绕均衡价格波动。此外,本文还讨论了一种更简单的蜘蛛模型的修正,其中卖方通过关注前一时期的需求和供给之间的加权平均值来确定市场价格。与网络模型类似,找到了均衡价格。本文研究了初始点与均衡点不一致的情况,并考察了这种情况下价格和产量的趋势。给出了不同类型的模型,分析了描述类网模型的差分方程通解和差分方程组的性质及其修正。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A WEB-LIKE MODEL OF THE LEARNING MARKET
The article discusses both a simpler dynamic model of a product market (referred to as the «web-like model») and a modified version of this model where sellers set the market price. These dynamic models are described using discrete first-order difference equations and systems of difference equations. The study focuses on the importance of understanding dynamic market models for certain products, particularly the web and web-like market models with training, which are examined in the article. Based on certain assumptions (described further in the article), a Valsar interpretation of these models is provided: the market is regulated by an auctioneer who initially announces the product price, and then buyers and sellers execute agreements and communicate the results to the auctioneer in terms of supply and demand volumes. If the agreements are found to be imbalanced, the auctioneer adjusts the price in an attempt to restore market equilibrium. Final agreements are made once equilibrium is reached. The article considers cases where the initial point coincides or does not coincide with equilibrium, and analyzes the price and production volume trends in these scenarios. A formula is derived that determines the trajectory of price changes in the «spider model», indicating that the market price will fluctuate around the equilibrium price. Additionally, a modification of the simpler spider-like model is discussed, where sellers determine the market price by focusing on a weighted average value between demand and supply from the previous period. Similar to the web model, the equilibrium price is found. The article investigates the case when the initial point does not coincide with equilibrium and examines the trends of prices and production volumes in this scenario. Different types of models are presented, and the properties of general solutions of difference equations and systems of difference equations that describe the web-like model and its modification are analyzed.
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