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Table 1 DEA input–output variables

From: Analyzing the efficiency of small and medium-sized enterprises of a national technology innovation research and development program

DEA input variable Variable name Sub-item Unit of variable
Government subsidy x 1   (US$ 106)
Budget from recipient x 2   (US$ 106)
R&D staffs x 3   
R&D period x 4   Years
DEA output variable Variable name Sub-item  
Publications y1 = 1.0 × y a  + 0.5 × y b SCI articles (y a )  
   Non-SCI articles (y b )  
Patents y2 = 1.0 × y c  + 0.2 × y d  + 0.6 × y e  + 0.2 × y f Foreign registrations (y c )  
   Foreign applications (y d )  
   Domestic registrations (y e )  
   Domestic applications (y f )  
Commercialization sales y 3   (US$ 106)