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Open access to scientific and technological(S&T)information has become the developmental strategy and target of global main S&T countries.However,open access to research data still confronts challenges in the implementing process.Data Level Metrics(DLM)is an approach to forward the scientific data open access,which aims to identify researchers’contribution to data work.This paper reviewed the literatures of Bibliometrics,Scientometrics,Informetrics,
Open access to scientific and technological (S & T) information has become the developmental strategy and target of global main S & T countries. Host, open access to research data still confronts challenges in the implementing process. Data Level Metrics (DLM) is an approach to forward the scientific data open access, which aims to identify researchers’contribution to data work. This paper reviewed the literatures of Bibliometrics, Scientometrics, Informetrics,