基于函数型数据的网拍虚假出价动机及影响识别  

Identification of Motivation and Influence of Online-auction Shill Bidding Behavior Based on Functional Data Analysis

作　　者：曹珂 严明义[2] CAO Ke;YAN Ming-yi(School of Statistics,Xi’an University of Finance and Economics,Xi’an 710100,China;School of Economics and Finance,Xi’an Jiaotong University,Xi’an 710061,China)

机构地区：[1]西安财经大学统计学院,陕西西安710100 [2]西安交通大学经济与金融学院,陕西西安710061

出　　处：《计算机技术与发展》2023年第9期16-23,共8页Computer Technology and Development

基　　金：陕西省自然科学青年项目(2022JQ-076)。

摘　　要：以网络拍卖中的虚假出价行为为研究对象,在拍卖理论中的信息关联价值假设下,运用函数型数据分析方法并基于竞拍者随机到达的非齐次泊松过程特征,构建了卖者虚假出价动机阶段变化模型,对卖者参与虚假出价动机及影响进行分析。研究结果表明,卖者的虚假出价参与动机随着拍卖的进行逐渐减弱,拍卖方式、关联程度、竞拍者人数以及拍品价值均会影响卖者参与虚假出价的动机。其中,第二价格密封拍卖下卖者参与虚假出价的动机更强烈;关联程度越高的拍卖中更易发生虚假出价;竞拍者人数的增加则会减弱卖者的参与动机;拍品价值中个人估值占比越小,则越易发生虚假出价。最后通过实证分析验证了所得结论并给出具体管理启示,为进一步设计网络拍卖机制以减少虚假出价行为的发生、维护网络交易公平公正、提升拍卖市场运行效率具有实践意义。We use functional data analysis method to study the motivation and influence of bidding behavior under the assumption of information-related value in auction theory,and construct a model of seller bidding motivation stage change based on the characteristics of non-homogeneous Poisson process of random arrival of bidders,and analyze the seller's motivation and influence to participate in bidding.The results of the study show that the seller's motivation to bid gradually decreases as the auction progresses,and the auction method,the degree of association,the number of bidders and the value of the lot all affect the seller's motivation to participate in the bidding.Among them,the seller's motivation to participate in the bid under the second price seal auction is stronger.The more relevant the auction,the more likely it is to make bids.An increase in the number of bidders will weaken the seller's motivation to participate.The smaller the proportion of individual valuations in the value of the lot,the more likely it is that bids will occur.Finally,through empirical analysis,the conclusions obtained are verified and specific management enlightenment is given,which is of practical significance for further designing the online auction mechanism to reduce the occurrence of bidding,maintain the fairness and justice of online transactions,and improve the operational efficiency of the auction market.

关 键 词：网络拍卖 虚假出价行为 函数型数据 非齐次泊松过程 出价动机 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]