Skip to Main Content
Table 1.

Model parameters for collections of papers used in our measurements

DisciplinesPublication year TpublNumber of papers NReference list length R0Growth exponents (α + β), yr−1Average fitness η0Shape parameter σCopying exponent γ, yr−1Indirect citations T0Nonlinear coefficient b
Physics 1984 40,195 19.2 0.045 0.48 1.13 1.2 ± 0.2 3.2 0.42 
Economics 1995 4,782 8.8 0.12 0.49 1.13 1 ± 0.2 7.2 0.30 
Economics 1984 3,043 8.4 0.09 0.45 1.13 1 ± 0.2 6.6 0.29 
Mathematics 1984 6,313 3.9 0.092 0.46 1.13 0.8 ± 0.2 5.5 0.25 
DisciplinesPublication year TpublNumber of papers NReference list length R0Growth exponents (α + β), yr−1Average fitness η0Shape parameter σCopying exponent γ, yr−1Indirect citations T0Nonlinear coefficient b
Physics 1984 40,195 19.2 0.045 0.48 1.13 1.2 ± 0.2 3.2 0.42 
Economics 1995 4,782 8.8 0.12 0.49 1.13 1 ± 0.2 7.2 0.30 
Economics 1984 3,043 8.4 0.09 0.45 1.13 1 ± 0.2 6.6 0.29 
Mathematics 1984 6,313 3.9 0.092 0.46 1.13 0.8 ± 0.2 5.5 0.25 
Close Modal

or Create an Account

Close Modal
Close Modal