Starting values for Parameters in Mixed Logit Model
Posted: 24 Feb 2022, 18:47
Dear Concern,
I have gone through the code examples in the Apollo forum. I wanted to use the mixed logit I order to capture the preference heterogeneity in the sub-population and hence I would like to use MMNL/Mixed logit model. But I have a question regarding the starting value. Citing an example from the code given in Apollo website:
### Vector of parameters, including any that are kept fixed in estimation
apollo_beta = c(mu_log_b_tt = -3,
sigma_log_b_tt = -0.01,
mu_log_b_tc = -3,
sigma_log_b_tc = -0.01,
mu_log_b_hw = -3,
sigma_log_b_hw = -0.01,
mu_log_b_ch = -3,
sigma_log_b_ch = -0.01)
I am pretty much not sure, how these starting values are selected based on the data of Swiss Metro. In other words, What kind of starting values should I use? Is it flexible to choose the stating values?
I have gone through the code examples in the Apollo forum. I wanted to use the mixed logit I order to capture the preference heterogeneity in the sub-population and hence I would like to use MMNL/Mixed logit model. But I have a question regarding the starting value. Citing an example from the code given in Apollo website:
### Vector of parameters, including any that are kept fixed in estimation
apollo_beta = c(mu_log_b_tt = -3,
sigma_log_b_tt = -0.01,
mu_log_b_tc = -3,
sigma_log_b_tc = -0.01,
mu_log_b_hw = -3,
sigma_log_b_hw = -0.01,
mu_log_b_ch = -3,
sigma_log_b_ch = -0.01)
I am pretty much not sure, how these starting values are selected based on the data of Swiss Metro. In other words, What kind of starting values should I use? Is it flexible to choose the stating values?