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Table 3 Log-Likelihoods and number of parameters with various covariance structures
From: Effects of highway work zone temporary countermeasures
Covariance Structure | Unconstrained | Autoregressive | Diagonal | |
|---|---|---|---|---|
Speed - Full | Log likelihood | 1804.62 | 1751.87 | 1746.49 |
Parameters | 35 | 22 | 25 | |
AIC | -3539.24 | -3459.74 | -3442.97 | |
Speed - Parsimonious | Log likelihood | 1802.28 | 1747.36 | 1743.67 |
Parameters | 29 | 16 | 19 | |
AIC | -3546.56 | -3462.72 | -3449.34 | |
Speed Variance - Full | Log likelihood | -1897.58 | -1907.45 | -1907.50 |
Parameters | 27 | 23 | 24 | |
AIC | 3849.16 | 3860.90 | 3862.99 | |
Speed Variance - Parsimonious | Log likelihood | -1901.82 | -1913.71 | -1913.53 |
Parameters | 19 | 15 | 16 | |
AIC | 3841.64 | 3857.43 | 3859.06 | |