本文關鍵詞：多源引文復合研究：方法比較與分布規(guī)律　出處：《華東師范大學》2017年碩士論文　論文類型：學位論文

  更多相關文章： Scopus WoS Google Scholar 多源數據 復合引文分析 分布規(guī)律

【摘要】：鑒于 Scopus、Web of Science(WoS)與 Google Scholar(GS)所收錄的期刊在利用庫內引文指標進行測評時,結果往往不盡相同,三個單源數據庫在計量學研究和應用中各有局限,單純利用任一數據庫進行期刊、學者測評都可能導致信息缺失,為了減少評估特定學科領域的期刊影響力時的偏差,更為全面的思路是將三個數據庫的數據結合計算,構成基于多個不同數據庫來源數據的綜合性引文分析測度。論文以細胞生物學、植物學、圖書情報學、管理學、語言學和哲學這六個學科2009-2014年數據為實證基礎,嘗試對比Scopus、WoS和GS三個單源數據庫的引文指標差異。結果發(fā)現,三個單源數據庫的總被引數值結果不盡相同,各庫中引文數據總體滿足GSScopusWoS;排名越靠前的期刊,在各個數據庫中的引文數據差異越大;由于各個數據庫中引文數據的差異,導致期刊基于引文指標進行測評時,結果在各庫間顯著不同。在選擇復合指標時,以期刊被引次數這一底層參量為切入點,采用可以反映整體數據的平均水平的算術均值作為基本復合方法,在此基礎上補充體現數值分布均衡性的幾何均值和調和均值,對各期刊進行多源數據復合引文研究。均值測度結果證明,復合型指標總體上能較為準確地反映期刊在學科中的地位;利用均值復合方法得到的最終指標值,其結果與Scopus期刊的被引次數最為接近,其數值結果總體上滿足GSCA≥CMScopusWoS;多源數據復合引文與單個數據庫引文的期刊排名差異呈現"兩端小、中間大"之現象;累計均值(算術、幾何、調和)與期刊數之間未證實存在布拉德福定律,但在期刊數量等同的三分區(qū)內,累計被引均值滿足形如n2:1n:1的經驗分布;算術均值、幾何均值和調和均值雖有差異,但亦有線性關聯,應用中可選其一。本研究還使用變異系數,對單源與多源數據的離散度進行了分析。在其他復合方法上,還探索了論文在多個數據庫中的最大施引文獻集合,作為在論文層次復合方法的補充。理論與實證結果均證明,采用均值法和最大施引文獻法對WoS、Scopus和GS三個數據庫進行的復合引文分析,均可在一定程度上均衡了三個數據庫差異性,得到一個相對全面、公正的期刊測評參數,從而更為全面的反映計量學中的引文數據。在實際的評價應用中,若數據中極端值較少的情況下,算術均值、幾何均值和調和均值三種復合方法可換用,若引文數據在三個數據庫中差異較大,則采用幾何均值和調和均值相較于算術均值的結果更佳。結合本文的理論研究內容,與我國目前科研評價中的問題與現狀,本研究也提出針對科研評價中的期刊評價、學科差異、科研人員評價和評價方法運用四個方面的政策建議。
[Abstract]:In view of the fact that the journals included in Scopusa Web of Science WoS and Google Scholaria are evaluated by citation indexes in the database. The results are often different, the three single-source databases have their limitations in metrology research and application. Using any database for journals, scholars' evaluation may lead to the lack of information. In order to reduce the deviation in evaluating the journal influence of a specific subject area, a more comprehensive idea is to combine the data of the three databases. A comprehensive citation analysis measure based on multiple data sources from different databases is presented in this paper, including cell biology, botany, library and information science, and management. Based on the 2009-2014 data of six disciplines of linguistics and philosophy, this paper tries to compare the differences of citation indexes between Scopusus WoS and GS. The total citation values of the three single source databases are different, and the citation data in each database generally meet the requirements of GSScopus WoS; The higher the ranking of journals, the greater the differences in citation data in each database; Because of the difference of citation data in each database, the results of periodical evaluation based on citation index are significantly different from each other. When selecting compound index, the bottom parameter of periodical citation number is taken as the starting point. The arithmetic mean, which can reflect the average level of the whole data, is adopted as the basic composite method, and the geometric mean and harmonic mean, which reflect the equilibrium of numerical distribution, are supplemented on this basis. The multi-source data compound citation of each periodical is studied. The results of mean value measure prove that the composite index can accurately reflect the status of the periodical in the subject. The final index value obtained by the mean value composite method is the most close to the number of citations in Scopus journals, and the numerical results generally meet the requirements of GSCA 鈮，

本文編號：1385367