【作者】 李莉；

【导师】 陈忠；

【作者基本信息】 上海交通大学 ， 管理科学与工程， 2013， 博士

【摘要】 人类社会正快速步入智能时代，这种运用信息与知识解决问题的能力已经成为知识经济时代的“主要能源”。如何运用智能提供高质量的服务和为智能活动提供高水平的服务是现代服务业发展的两个重要议题。中介服务是一种联络两个或多个主体的社会活动，大量事实表明，为决策提供信息、知识或解决方案的智能中介服务已取代仅仅传递物资、能量的传统服务，逐渐成为现代服务的主流。社会网络是中介活动的基础和平台，它的结构和演化对于智能中介服务的效能意义重大，从而成为了本论文的主题。本文以复杂社会网络中的智能中介服务为研究对象，采用基于主体的复杂社会网络建模与仿真方法，对其作用机制展开定性和定量研究，以解释一些特定的社会现象并为智能中介服务的管理提供依据。本文提出问题、资源和关系三维模型分析智能中介服务的作用机制，通过若干实例分析，把复杂社会网络中的智能中介服务归纳为四种表现形式，认为其嵌入被服务对象问题解决的过程中，通过关系维度发挥作用，基本功能是搭建和干预促进问题解决的网络，价值表现为服务参与各方的边际产出与边际成本之比。通过对具体情境的建模仿真，定量研究复杂社会网络特征对智能中介服务功能与价值的影响。首先考察匹配功能对匹配方式和顶点收益分布的敏感性，研究发现，当顶点收益服从不同分布时，不同匹配方式导致的差异不同，但Gale-Shapley匹配的差异随着网络规模的增大呈缩小趋势。结果表明匹配方式选择和收益分布信息获得的重要性。其次是对交易产生促进和阻碍作用的考察。如果用直接摩擦刻画顶点的交易困难，间接摩擦描述竞争效应，可以发现供需比例、顶点间信任程度、平均度及网络密度等对平均摩擦及其优化都有影响，而且外智能生中介服务的优化效果好于内生服务。第三，考察智能中介与网络共同创造智能中介服务的价值。通过分析体现双方共生的网络嵌入价值，可获得智能中介服务存在的成本和定价条件，并发现顶点适应度、智能中介能力、价格和度分布对网络嵌入价值存在影响。以区域创新网络、金融中介网络和科研合作网络的演化为实例，分析智能中介服务对复杂社会网络产生的影响，可利用匹配、摩擦和网络嵌入价值的意义及研究结果，解释硅谷持续创新的必要条件和次贷危机爆发的内部机理，对科研政策制定提出建议，并指出区域创新网络和金融监管中智能中介服务的基本功能和演化方向。本文有三点主要贡献：第一，提出新的提供智能中介服务的交易网络结构指标——直接摩擦和间接摩刻画交易困难和竞争关系，发现网络特征对全局摩擦及其优化存在的影响；第二，提出新的智能中介服务价值指标——网络嵌入价值刻画智能中介服务的贡献，发现网络特征对网络嵌入价值存在的影响；第三，从新的角度解释区域创新网络、金融网络的演化动力与条件，指出相应智能中介服务的演化方向。更多还原

【Abstract】 Human society is going into the age of intelligence rapidly. As the ability ofproblem solving with information and knowledge, intelligence is already becomemain energy of knowledge economy Age. How to provide high quality service withintelligence and to intellectual activities are two important issues of modern serviceindustry development. Intermediary is such activity which connects two or multiplesocial agents. Instead of service only transferring materials and energy intellectualintermediaries who provide information, knowledge and solution service are graduallybecome mainstream in social system. Social networks are underpinnings andplatforms to intermediary activity. It is significant to the capacity of intellectualintermediary service that their structure and evolution influence intellectualintermediary service and become the main topic of this dissertation.In order to find new explanation perspective to certain social phenomena andprovide foundations to manage intellectual intermediary service, this dissertationtakes intellectual intermediary service in complex social networks as research objectand conducts qualitative and quantitative research on it’s functional mechanism withagent based modeling and simulation on complex social networks.A three-demensional model with problem, resource and relational dimension isput forward to analyze the functional mechanism of intellectual intermediary service.By several example analyse, intellectual intermediary service is induced to four forms.It is emvedded in during customers’ problem solving process and comes into play atrelational dimension. The fundamental function of it is to establish and interfere with problem solving network. It’s value is presented by the ratio between marginaloutcome and marginal cost of all agents involved in the service.With modeling and simulation on certain content, quantitative research isconducted to analysis how the characteristics of complex social network influence thefunctions and value of intellectual intermediary service. Firstly, sensitivity of matchmechanism and distribution of nodes payoffs to match function is investigated.Differences result form diffent payoff distribution is varied with match mechanisms.Differences in Gale-Shapley match is reduced with the increase of network scale. Thatindicates the important to appropriate mechanim chosen and payoff information inmatching process. Secondly, social networks hinder exchange function as well asfacilitate it. Direct friction is defined to describe exchange difficulty nodes faced andindirect friction to competition effect of them. Results show that average frictions andtheir optimization are influenced by the ratio of demand and supply, degree of trust,network average degree and network density. The optimization performance ofexogenous intellectual intermediary service is superior to endogenous service. Thirdly,The value if intellectual intermediary service is co-created by intellectual intermediaryand network. Network embedded value which reflects their symbiotic relationship isdefined to describe it and cost and price condition of intellectual intermediary serviceexistence are obtained. Results show that network embedded value is influenced bynodes fitness, ability of intellectual intermediary, price and network degreedistribution.Qualitative analysis is conducted to the evolution of regional innovation network,financial intermediary network and scientific collaboration network. Internalmechanism of sustaining innovation of Silicon Valley and the outbreak of subprimecrisis with match, friction and network embedded value and suggestions to researchpolicy making is promoted. It is indicated that evolutional condition and direction ofintellectual intermediary service’s fundamental functions in regional innovationnetwork and financial regulation.There are three main contributions in this dissertation. Firstly, new measurementof exchange network—direct friction and indirect friction is puts forward to describedifficulty and competition effect. It is found that average frictions and its optimization are influenced by network characteristics. Secondly, new measurement of intellectualintermediary service value—network embedded value is puts forward to describe thecontribution of intellectual intermediary service. It is found that network embeddedvalue are influenced by network characteristics. Thirdly, new perspective to explainregional innovation network and financial intermediary network and indicates thedirections of their intellectual intermediary service.更多还原