Multistage Nested Logit R

问题

I want to estimate a nested logit model using the language R. As standard packages for such problems I am using "mlogit". Now I would like to estimate a model, with more than just one stage. The problem is as follows:

Stage: People decide, if they want to migrate to the US or not.
Stage: For all people decided to migrate, they have to decide in which region of the US they want to go (US devided in 6 regions)
Stage: Within the region, they decide in what kind of area they want to live; urba vs. rural

I already transformed my data using mlogit.data().

data <- mlogit.data(data = usa_canada_uk, choice = "migrant"))

This is how "data" looks:

                sex   marst numperhh_cat age_cat   famsize                               nchlt5 labour_code sample                               nchlt10
3888.no  female married          1-5     16+         1          no chiled aged 5 or younger not working   8262          no chiled aged 10 or younger
12874.no female married          1-5     16+ 2 or more at least one child aged 5 or younger   ancillary   8262 at least one child aged 10 or younger
13084.no female married          1-5     16+ 2 or more at least one child aged 5 or younger   ancillary   8262 at least one child aged 10 or younger
9359.yes female married          1-5     16+         1          no chiled aged 5 or younger     service   8262          no chiled aged 10 or younger
7569.no  female married          1-5     16+         1          no chiled aged 5 or younger     service   8262          no chiled aged 10 or younger
5778.no  female married          1-5     16+         1          no chiled aged 5 or younger not working   8262          no chiled aged 10 or younger
         perwt        labforce age migrant country_of_birth       region citypop urban work.prob.home work.prob.abroad migration.prob stay.prob  chid
3888.no      1     in labforce  26    TRUE   United Kingdom home_country      NA urban             NA               NA             NA        NA  3888
12874.no     1     in labforce  47    TRUE   United Kingdom home_country      NA rural             NA               NA             NA        NA 12874
13084.no     1     in labforce  22    TRUE   United Kingdom home_country      NA urban             NA               NA             NA        NA 13084
9359.yes     1     in labforce  28   FALSE   United Kingdom home_country      NA urban             NA               NA             NA        NA  9359
7569.no      1     in labforce  32    TRUE   United Kingdom home_country      NA urban             NA               NA             NA        NA  7569
5778.no      1 not in labforce  38    TRUE   United Kingdom home_country      NA rural             NA               NA             NA        NA  5778
         alt
3888.no   no
12874.no  no
13084.no  no
9359.yes yes
7569.no   no
5778.no   no

Here is my idea, how I want to code it, but it is not working:

mlog <- mlogit(migrant ~ 1  | age + numperhh_cat + sex + famsize + work.prob.home,
             nests = list(home = c("home_country"),
                         foreign = c(region_1 = c("rural", "urban"),
                                     region_2 = c("rural", "urban"),
                                     region_3 = c("rural", "urban"),
                                     region_4 = c("rural", "urban"),
                                     region_5 = c("rural", "urban"),
                                     region_6 = c("rural", "urban"))
                                     ),
           reflevel = "yes",
           weights = perwt,
           data = data)

As you can see, one nest on the first stage (deciding not to migrate = "home_country") is degenerated.

If someone could help me, that would be awesome.

Best wishes,

Chris

来源：https://stackoverflow.com/questions/31231505/multistage-nested-logit-r

标签

mlogit