本文選題：大眾生產 + 百度百科　； 參考：《華南理工大學》2013年博士論文

【摘要】：在線百科是典型的大眾生產社區(qū)。本文基于網絡譜方法探討百度百科社區(qū)上大眾生產者（貢獻者）的異質性協(xié)作關系特征。具體工作體現在如下幾個方面： 根據“臨界質量”理論的基本觀點分析了社區(qū)貢獻者的異質性以及參與特征。研究表明，社區(qū)內的貢獻者在資源和“利益”方面都呈現出異質性。社區(qū)內容生產函數更多地屬于加速生成函數。因此，百度百科社區(qū)滿足內容產生并可持續(xù)發(fā)展的關鍵條件。此外，社區(qū)貢獻者不論是“局部”貢獻值，還是“整體”貢獻值的分布都明顯服從“少數”定律。不僅如此，由這些貢獻者參與行為導致的社區(qū)內容的“嚴謹性”和“多樣性”方面同樣服從這種特征。 提出采用反映貢獻者異質性的網絡分析方法研究貢獻者的協(xié)作關系。研究表明，貢獻者協(xié)作網絡屬于無標度異配型高聚集性網絡。在知識專業(yè)性比較強的社區(qū)內，貢獻者的協(xié)作網絡特征與其在社區(qū)內的貢獻值具有顯著的相關性。反之，在知識專業(yè)性比較寬泛的社區(qū)內卻不存在這種相關性。在采用動態(tài)網絡分析相關性時發(fā)現，貢獻者在網絡中的連接強度、介數都始終與其編輯詞條數存在較為顯著的正相關性；而聚類系數則與之呈現出顯著的負相關性。特別地，貢獻者的接近中心性與其貢獻值的相關性隨著時間的演化出現明顯的逆轉現象。 采用網絡譜的分析方法研究了由網絡結構導致的集體狀態(tài)以及網絡上的局域性特征�；谪暙I者異質性，通過引入二次量子化算子表述下的分子系統(tǒng)Hückel模型，建立了一般網絡譜和對應量子系統(tǒng)能量譜之間的關聯(lián)性，拓展了網絡譜的研究方法。研究結果表明：百度百科社區(qū)貢獻者動態(tài)協(xié)作各截面網絡導致的集體狀態(tài)中，部分屬于集體有序態(tài)，部分屬于集體軟混沌態(tài)。在緊束縛近似下，隨著時間演化各截面網絡上對應的電子運動狀態(tài)愈發(fā)趨向于完全局域態(tài)，，且在演化中電子集體運動狀態(tài)與其階梯函數狀態(tài)的偏差呈現出近似周期性波動。采用譜間距序列分析同樣顯示，部分截面網絡對應的分子系統(tǒng)中電子集體運動的狀態(tài)顯著地處于局域態(tài)，而部分還處于中間態(tài)。 采用時間序列分析方法分別研究網絡譜的波動序列和趨勢序列。研究發(fā)現，貢獻者動態(tài)協(xié)作關系在不同時間截面上網絡譜的波動序列特征滿足冪律關系，且這種冪律關系服從量子系統(tǒng)中能量譜波動序列特征的普適規(guī)律。同時，貢獻者動態(tài)協(xié)作關系網絡各截面網絡譜序列都具有多重分形結構特征。 總之，本文研究了百度百科社區(qū)貢獻者的協(xié)作關系的結構特征，提出反映個體異質性的一般網絡的量子映射模型，建立了網絡譜和量子系統(tǒng)能量譜的關聯(lián)性。因此，既有實證研究的價值，同時還具有方法論的價值。
[Abstract]:Online encyclopedia is a typical mass production community. Based on the method of network spectrum, this paper discusses the heterogeneity of collaborative relationship between mass producers (contributors) in Baidu encyclopedia community. Specific work is reflected in the following areas: Based on the critical mass theory, the heterogeneity and participation characteristics of community contributors are analyzed. Research shows that contributors in the community show heterogeneity in terms of resources and benefits. Community content production functions are more of an accelerated generation function. Therefore, Baidu encyclopedia community to meet the content and sustainable development of the key conditions. In addition, the distribution of community contribution value, whether local or global, is obviously obeyed by the "minority" law. Moreover, the "rigour" and "diversity" of community content as a result of the involvement of these contributors also derive from this characteristic. A network analysis method reflecting the heterogeneity of contributors is proposed to study the cooperative relationship of contributors. The research shows that the cooperative network of contributors belongs to scale-free heterodyne high aggregation network. In communities with strong knowledge professionalism, the collaborative network characteristics of contributors are significantly correlated with their contribution in the community. On the other hand, this correlation does not exist in communities where knowledge specialization is broader. When using dynamic network to analyze the correlation, it is found that there is a significant positive correlation between the connection strength and the number of editing entries of the contributors in the network, while the clustering coefficient has a significant negative correlation with it. In particular, the correlation between the close centrality of contributors and their contribution values is reversed with the evolution of time. The collective state caused by the network structure and the local characteristics of the network are studied by the method of network spectrum analysis. Based on the heterogeneity of the contributors, by introducing the H 眉 ckel model of the molecular system described by the quadratic quantization operator, the correlation between the general network spectrum and the energy spectrum of the corresponding quantum system is established, and the research method of the network spectrum is expanded. The results show that: among the collective states caused by the dynamic collaboration of the community contributors of Baidu encyclopedia, some belong to the collective ordered state and part belong to the collective soft chaos state. In the tight-binding approximation, the corresponding states of electron motion on each cross-section network tend to be fully localized with the evolution of time, and the deviation between the state of collective motion of electrons and the state of its step function shows an approximate periodic fluctuation. The spectral interval series analysis also shows that the state of collective electron motion in the molecular system corresponding to the partial cross-sectional network is in the local state significantly while the part is still in the intermediate state. The time series analysis method is used to study the wave series and trend series of the network spectrum. It is found that the dynamic cooperative relationship of the contributors satisfies the power law relation of the wave sequence of the network spectrum on different time sections, and the power law relation obeys the universal law of the characteristic of the wave sequence of the energy spectrum in the quantum system. At the same time, the spectral sequences of each cross-section of the dynamic cooperative relationship network of contributors have multifractal structure. In a word, this paper studies the structural characteristics of the cooperative relationship of the community contributors of Baidu encyclopedia, proposes a quantum mapping model of the general network reflecting individual heterogeneity, and establishes the correlation between the network spectrum and the energy spectrum of the quantum system. Therefore, both the value of empirical research, but also the value of methodology.
【學位授予單位】：華南理工大學
【學位級別】：博士
【學位授予年份】：2013
【分類號】：F49;F224

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