作　　者： ; ; ;

机构地区： 南京大学信息管理学院

出　　处： 《情报杂志》 2011年第9期45-49,33,共6页

摘　　要： 基于化学与经济学期刊引文数据,利用非线性回归分析对Barnett模型在文献老化研究领域应用的合理性进行了验证,结果表明该模型对学科引文数据具有很好的解释度,但同时也存在残差分析结果不理想的缺陷。在此基础上,将互联网作为参数引入老化模型研究中对Barnett原始模型进行了修正,其回归分析结果表明修正模型较原始模型具有更为理想的引文数据解释度与残差分析结果,从而印证了网络环境下文献介质类型与利用方式的变革对老化状况的现实影响。与此同时,还通过网络环境前后Barnett模型回归效果的比较分析进一步揭示了文献老化随互联网普及而趋于延缓的整体态势。通过Barnett文献老化模型的构建、修正与回归分析,以期更为准确地把握网络环境对文献老化的客观影响。 Based on the Barnett model of literature obsolescence and journal citationdata from chemistry and economy,the paper tests the rationality of the model through the nonlinear regression method.The result suggests that this model can explain the distribution of disciplinary citations age well;however,the model also has a defect that the result of residual analysis is not ideal.Based on the above,the paper amends the Barnett initial model by introducing the internet as an influence factor,and the regression result suggests that this amended model has a higher explaining degree and better residual analysis result than the intial one.Furthermore,the contrast of the nonlinear regression results between the pre-and post-internet era also indicates that internet actually delays the literature ageing process.Fianlly,the study confirms that the network enviroment has influenced the literature obsolescence and delayed its ageing.Through the analysis above,the authors hope to grasp the rule of literature obsolescence more accurately.

关 键 词： 文献老化 影响因素 网络环境 模型

领　　域： [文化科学]