网络效应、新产品进入和政策分析
发布时间：2018-12-25 08:40
【摘要】：网络效应作为一种在信息经济时代广泛存在的经济现象,正为越来越多的经济学家所关注。一般认为,网络效应的存在,会使市场在位者拥有用户基础(installed base)上的“先行优势”。而这种先行优势究竟会在多大程度上加大新产品或新技术进入市场的难度,一直是经济学家所关注的问题。本文建立了一个基于主体的计算经济学模型,试图通过计算机模拟实验来研究在存在网络效应的市场中,一种与原有产品不兼容的新产品最终获得的市场份额与各种背景条件之间的关系。与同类研究不同的是,本文在对网络效应进行细分的基础上,提出了重友效应的概念,并对重友效应的大小和潜在消费者关系网络的结构对最终市场结构的影响进行了深入研究。除此之外,本文还专门对政府的市场进入扶持政策所能取得的效果进行了讨论。在具有较强网络效应的产业中,以扶持较晚进入市场的本国企业为目的的贸易政策和产业政策得到了广泛的应用。分析不同的市场进入扶持政策在不同背景条件下所能取得的效果,对于政策的选择具有重要的现实意义。 本文的结构安排如下:第1章对本文的研究动机和研究主题进行了详细的阐述;第2章对网络效应及一些相关概念进行了简介,并介绍了有关网络效应下的新产品进入的一些研究;第3章对本文的主要创新点之一——重友效应进行了详细的阐述;第4章对几种有代表性的网络结构进行了介绍,并分析ACE方法的优缺点,阐述本文采用这一方法的原因;第5章提出了一个基于主体的计算经济学模型;第6章根据这个模型对重友效应和潜在消费者关系网络的结构对新产品的最终市场份额的影响进行了计算机模拟实验,并得出了一些结论。第7章对模型进行了扩展,分析了不同市场进入扶持政策在不同背景条件下所取得的效果。第8章阐述并分析了两个新产品成功进入市场的案例。第9章对全文进行了总结,并指出了进一步的研究方向。 本文的主要创新点在于:(1)在对网络效应进行细分的基础上,明确提出了重友效应的概念,并将重友效应的大小作为一个变量引入到模型中,进而分析重友效应的大小对最终市场结构具有什么样的影响。在以往的经济学文献中,只有极少数经济学家提及过类似于重友效应的现象,但他们只对这种现象进行了简单
[Abstract]:As a widespread economic phenomenon in the era of information economy, network effect is paid more and more attention by more and more economists. It is generally believed that the existence of network effect will make the incumbent of the market have the "leading edge" on the user-based (installed base). The extent to which this advance advantage will make it more difficult for new products or technologies to enter the market has been an issue of concern to economists. In this paper, an agent-based computational economics model is established to study the existence of network effects in markets with network effects through computer simulation experiments. The relationship between the market share of a new product that is incompatible with the original product and various background conditions. Different from the similar research, this paper puts forward the concept of "double friend effect" on the basis of subdividing the network effect. Furthermore, the influence of the size of the friendship effect and the structure of the potential consumer relationship network on the final market structure is studied. In addition, this paper also discusses the effect of the government's market entry support policy. Among the industries with strong network effects, trade policies and industrial policies aimed at supporting domestic enterprises entering the market late have been widely used. It is of great practical significance to analyze the effects of different market entry support policies under different background conditions. The structure of this paper is arranged as follows: chapter 1 describes the motivation and subject of this paper in detail; Chapter 2 introduces the network effect and some related concepts, and introduces some research on the entry of new products under the network effect. In chapter 4, several representative network structures are introduced, and the advantages and disadvantages of ACE method are analyzed. In chapter 6, computer simulation experiments are carried out based on the model and the influence of the structure of the potential consumer relationship network on the final market share of the new product, and some conclusions are drawn. Chapter 7 extends the model and analyzes the effects of different market entry support policies under different background conditions. Chapter 8 describes and analyzes the successful entry of two new products into the market. Chapter 9 summarizes the full text and points out the further research direction. The main innovations of this paper are as follows: (1) based on the subdivision of the network effect, the concept of the refriend effect is clearly put forward, and the magnitude of the refriend effect is introduced into the model as a variable. And then analyze the size of the effect on the final market structure. In previous economic literature, only a handful of economists have referred to phenomena similar to the friendliness effect, but they have done so simply.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2004
【分类号】：F062.5
本文编号：2390945
[Abstract]:As a widespread economic phenomenon in the era of information economy, network effect is paid more and more attention by more and more economists. It is generally believed that the existence of network effect will make the incumbent of the market have the "leading edge" on the user-based (installed base). The extent to which this advance advantage will make it more difficult for new products or technologies to enter the market has been an issue of concern to economists. In this paper, an agent-based computational economics model is established to study the existence of network effects in markets with network effects through computer simulation experiments. The relationship between the market share of a new product that is incompatible with the original product and various background conditions. Different from the similar research, this paper puts forward the concept of "double friend effect" on the basis of subdividing the network effect. Furthermore, the influence of the size of the friendship effect and the structure of the potential consumer relationship network on the final market structure is studied. In addition, this paper also discusses the effect of the government's market entry support policy. Among the industries with strong network effects, trade policies and industrial policies aimed at supporting domestic enterprises entering the market late have been widely used. It is of great practical significance to analyze the effects of different market entry support policies under different background conditions. The structure of this paper is arranged as follows: chapter 1 describes the motivation and subject of this paper in detail; Chapter 2 introduces the network effect and some related concepts, and introduces some research on the entry of new products under the network effect. In chapter 4, several representative network structures are introduced, and the advantages and disadvantages of ACE method are analyzed. In chapter 6, computer simulation experiments are carried out based on the model and the influence of the structure of the potential consumer relationship network on the final market share of the new product, and some conclusions are drawn. Chapter 7 extends the model and analyzes the effects of different market entry support policies under different background conditions. Chapter 8 describes and analyzes the successful entry of two new products into the market. Chapter 9 summarizes the full text and points out the further research direction. The main innovations of this paper are as follows: (1) based on the subdivision of the network effect, the concept of the refriend effect is clearly put forward, and the magnitude of the refriend effect is introduced into the model as a variable. And then analyze the size of the effect on the final market structure. In previous economic literature, only a handful of economists have referred to phenomena similar to the friendliness effect, but they have done so simply.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2004
【分类号】：F062.5
【参考文献】
相关期刊论文 前2条
1 陈金国;网上拍卖交战中国[J];互联网周刊;2004年03期
2 江可申,田颖杰;动态企业联盟的小世界网络模型[J];世界经济研究;2002年05期
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