Research Article
Application of the Empirical Bayes Method with the Finite Mixture Model for Identifying Accident-Prone Spots
Table 4
Parameter estimates for the FMNB-2 and GFMNB-2 models.
| Method | Component | Statistic | Ln() | | | | | |
| Period 1 |
| FMNB-2 | 1 | Estimate | −6.275 | 0.991 | −0.056 | −0.013 | −0.188 | 0.626 | SE | 0.628 | 0.067 | 0.025 | 0.005 | 0.024 | 0.091 | 2 | Estimate | −10.026 | 1.248 | −0.035 | −0.014 | 0.216 | 0.450 | SE | 0.660 | 0.072 | 0.025 | 0.005 | 0.016 | 0.115 |
| GFMNB-2 | 1 | Estimate | −6.045 | 0.830 | −0.044 | −0.011 | 0.079 | 0.482 | SE | 0.628 | 0.066 | 0.026 | 0.005 | 0.016 | 0.107 | 2 | Estimate | −3.906 | 0.669 | −0.027 | −0.024 | 0.080 | 0.894 | SE | 0.899 | 0.103 | 0.027 | 0.005 | 0.028 | 0.087 | | | | | | | | | Estimate | 64.211 | −199.09 | 0.019 | −6.908 | 1.499 | −18.618 |
| Period 2 |
| FMNB-2 | 1 | Estimate | −7.424 | 1.113 | −0.049 | −0.015 | 0.027 | 0.833 | SE | 0.685 | 0.071 | 0.028 | 0.006 | 0.020 | 0.075 | 2 | Estimate | −8.085 | 1.086 | −0.068 | −0.009 | 0.029 | 0.247 | SE | 0.473 | 0.051 | 0.018 | 0.004 | 0.014 | 0.125 |
| GFMNB-2 | 1 | Estimate | −3.138 | 0.715 | −0.089 | −0.036 | 0.067 | 0.708 | SE | 0.731 | 0.077 | 0.026 | 0.005 | 0.021 | 0.088 | 2 | Estimate | −7.111 | 1.004 | −0.082 | −0.013 | 0.041 | 0.344 | SE | 0.487 | 0.051 | 0.020 | 0.004 | 0.014 | 0.091 | | | | | | | | | Estimate | 2.282 | 4.8630 | −0.0003 | −0.091 | −0.066 | 0.187 |
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Not significant at 5% significance level; SE: standard error.
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