Table 5 Results of the spatial variance function of the GTIE–CE, market, government, and technology dimensions.
From: Explaining the changes in the green technology innovation efficiency of construction enterprises
Year | Variance range (km) | Nugget value | Abutment value | Nugget coefficient | Fit model | Coefficient of determination | |
|---|---|---|---|---|---|---|---|
GTIE | 2010 | 933 | 0.2460 | 0.7580 | 0.675 | Exponential | 0.791 |
2015 | 508 | 0.0002 | 0.2084 | 0.999 | Spherical | 0.470 | |
2020 | 669 | 0.2415 | 0.5150 | 0.531 | Spherical | 0.686 | |
Market dimension | 2010 | 6157 | 0.0157 | 0.2414 | 0.935 | Gaussian | 0.794 |
2015 | 2960 | 0.0264 | 0.1110 | 0.762 | Gaussian | 0.836 | |
2020 | 1825 | 0.0141 | 0.0329 | 0.571 | Gaussian | 0.814 | |
Government dimension | 2010 | 3907 | 0.5580 | 3.1260 | 0.821 | Gaussian | 0.924 |
2015 | 4110 | 0.3300 | 1.6140 | 0.796 | Spherical | 0.844 | |
2020 | 1735 | 0.0099 | 0.0440 | 0.775 | Spherical | 0.800 | |
Technology dimension | 2010 | 2199 | 0.0189 | 0.0762 | 0.752 | Exponential | 0.909 |
2015 | 2069 | 0.0286 | 0.0792 | 0.639 | Gaussian | 0.912 | |
2020 | 1170 | 0.0041 | 0.0519 | 0.921 | Exponential | 0.824 |
