Research Article
Applications of Robust Methods in Spatial Analysis
Table 3
-estimates of the model parameters; standard errors are in parentheses and RMSE for
, and various combinations of
, , and
for the coal-ash study.
| | Scenarios | | a | b | c | | | | RMSE |
| | S1 | 0.94 | 0.0 | 0.2 | 0.3 | 10.84 (0.4725) | −0.2347 (0.0492) | 0.0593 (0.0289) | 1.1484 | | S2 | 112.34 | 0.0 | 0.005 | 0.9 | 9.869 (0.3556) | −0.1438 (0.0363) | 0.0652 (0.0215) | 1.2743 | | S3 | 0.94 | 0.3 | 0.2 | 0.3 | 10.662 (0.5085) | −0.1593 (0.0520) | 0.0272 (0.0316) | 1.1368 | | S4 | 0.0007 | 0 | 0.92 | 0.001 | 10.482 (0.4923) | −0.1321 (0.0524) | 0.0173 (0.0318) | 1.1528 | | S5 | 12.482 | 0 | 0.01 | 0.2 | 10.15 (0.4014) | −0.1374 (0.0390) | 0.0534 (0.0243) | 1.1950 |
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