biogeme 2.5 [Dim 19 jui 2016 17:58:58 CEST]

Michel Bierlaire, EPFL

This file has automatically been generated.

Wed Jul 6 20:17:03 2016

Tip: click on the columns headers to sort a table [Credits]

Model: Nested Logit
Number of estimated parameters: 6
Number of observations: 6768
Number of individuals: 6768
Null log likelihood: -6964.663
Init log likelihood: -6964.663
Final log likelihood: -5169.642
Likelihood ratio test: 3590.043
Rho-square: 0.258
Adjusted rho-square: 0.257
Final gradient norm: +3.003e-04
Diagnostic: Normal termination. Obj: 6.05545e-06 Const: 6.05545e-06
Iterations: 35
Run time: 00:01
Variance-covariance: from finite difference hessian
Sample file: ../swissmetro.dat

Utility parameters

Name Value Std err t-testp-valueRobust Std err Robust t-testp-value
ASC_CAR-0.3170.0443-7.160.000.0597-5.310.00
ASC_SM0.00fixed
ASC_TRAIN-10.23.13-3.270.003.15-3.250.00
B_COST-1.110.0511-21.650.000.0672-16.460.00
B_TIME-1.130.0576-19.590.000.103-10.910.00
SB_CAR0.00fixed
SB_SM0.00fixed
SB_TRAIN10.43.153.310.003.163.290.00

Model parameters

NameValueStd errt-test 0p-valuet-test 1p-valueRobust Std errRobust t-test 0p-valueRobust t-test 1p-value
EXISTING1.140.045924.940.003.150.000.046524.600.003.110.00
FUTURE1.00fixed

Utility functions

IdNameAvailabilitySpecification
1A1_TRAINTRAIN_AV_SPASC_TRAIN * one + B_TIME * TRAIN_TT_SCALED + B_COST * TRAIN_COST_SCALED
2A2_SMSM_AVASC_SM * one + B_TIME * SM_TT_SCALED + B_COST * SM_COST_SCALED
3A3_CarCAR_AV_SPASC_CAR * one + B_TIME * CAR_TT_SCALED + B_COST * CAR_CO_SCALED

Correlation of coefficients

Coefficient1 Coefficient2CovarianceCorrelationt-testp-valueRob. cov.Rob. corr.Rob. t-testp-value
B_COST B_TIME0.0005210.1770.300.76 *0.001830.2640.200.84 *
ASC_TRAIN B_COST0.007080.0442-2.920.00 -0.0323-0.153-2.890.00
ASC_TRAIN B_TIME0.04850.269-2.930.00 0.02830.0869-2.900.00
ASC_CAR ASC_TRAIN-0.0268-0.1933.160.00 -0.0319-0.1693.140.00
ASC_TRAIN SB_TRAIN-9.85-1.00-3.290.00 -9.95-1.00-3.270.00
ASC_CAR SB_TRAIN0.02780.199-3.420.00 0.03480.185-3.410.00
B_TIME SB_TRAIN-0.0505-0.279-3.650.00 -0.0345-0.106-3.640.00
B_COST SB_TRAIN-0.00716-0.0445-3.660.00 0.03160.149-3.660.00
ASC_CAR B_TIME-0.00155-0.6078.860.00 -0.00498-0.8065.210.00
ASC_CAR B_COST0.0005080.22413.230.00 0.0002430.06059.060.00

Smallest singular value of the hessian: 0.0499997