科研人员跨学科性与个体学术影响力的因果效应分析

Analyzing Researchers’Interdisciplinarity and Academic Impacts

【目的】探讨科研人员跨学科性与个体学术影响力之间的关系,为科研人员跨学科发展提供参考。【方法】选择Semantic Scholar数据库中的69 759位科研人员数据,采用布里渊指数测度指标,分析引用-发文-合作三个维度上科研人员的跨学科性,利用广义倾向值匹配法分析科研人员跨学科性对个体学术影响力的因果效应。【结果】在跨学科引用维度上,科研人员发文量和h指数随跨学科引用量上升而同步上升,超过极值点(1.5和0.05)后随之下降;但跨学科引用对篇均被引量无影响。在跨学科发文维度上,随着科研人员在更多学科内发表文献,发文量、h指数呈上升趋势,篇均被引量呈震荡式上升。在跨学科合作维度上,科研人员发文量随跨学科合作的增长而不断增长,但增长量逐渐递减;但跨学科合作对h指数、篇均被引量并不会产生影响。【局限】缺少对测度指标每一维度权重的考量,且未建立综合三个不同维度的跨学科性指标的评价体系。【结论】科研人员跨学科研究能够提高自身的学术影响力,但这种积极影响是有条件、有范围的。同时,不同维度的跨学科性评价方式具有差异性。

[Objective]This study explores the relationship between interdisciplinarity and individual academic impacts,aiming to promote the development of interdisciplinary research.[Methods]First,we retrieved 69,759 researchers from the Semantic Scholar database.Then,we used the Brillouin index to analyze their interdisciplinarity based on citation,publication,and collaboration.Finally,we applied the generalized propensity value matching method to examine the causal effect of interdisciplinarity on individual academic influence.[Results]For interdisciplinary citations,the publication number and h-index of researchers increased with the rise of multi-disciplinary citations.They surpassed the critical points(1.5 and 0.05)before subsequently declining.However,interdisciplinary citation does not impact the average citation number per paper.For interdisciplinary publications,as researchers published across more disciplines,the publication number and h-index showed an upward trend,while the average citation per paper showed an oscillatory increase.For interdisciplinary collaboration,the publication number of researchers steadily increases with the growth of interdisciplinary collaboration,albeit with a gradually diminishing rate of increase.However,interdisciplinary collaboration did not influence the h-index or average citation per paper.[Limitations]The study did not include the weighting of each dimension in the measurement indicators or establish an evaluative framework for a comprehensive interdisciplinary index encompassing all three dimensions.[Conclusions]Engaging in interdisciplinary research can conditionally enhance the academic impact of researchers,while different evaluation dimensions yield various results.