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2011 Nov 29
0
Single Variable mlogit formatting
...sically, I have a list 3x as long as my initial data list, that holds
values for all possible outcomes and whether or not they occurred.
I'm hesitant to ask additional questions until I've played around with
mlogit once my data is in the proper format, but if anyone has suggestions
for the mFormula that I should be using, that would be much appreciated.
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2012 May 29
0
mlogit package inquiry
...then convert it by mlogit.data method by specifying chld.var="observe"
mdata <- mlogit.data(data,choice="outcome",shape="long",chid.var="observe")
? Am I right? and then I could use mlogit to fit my model.
? Furthermore, I am also quite puzzled with the mFormula and the
probit boolean flag, am I correct to use
fit <- mlogit(outcome ~ V1 + V2 + V3 + V4,data=mydata)
? and then compute my probability estimate from the?coefficients??What
are the difference if I put variable between the?separator?| ??
? Thank you very much.
Best regards,
WONG Hang.
2011 Nov 02
0
Calling str() on mlogit object gives warnings
.... ..$ id : Factor w/ 235 levels "1","2","3","4",..: 1 1 1 1 1 1 1 1 1 1 ...
$ freq : 'table' int [1:2(1d)] 1474 1455
..- attr(*, "dimnames")=List of 1
.. ..$ : chr [1:2] "1" "2"
$ formula :Classes 'mFormula', 'Formula', 'formula' length 3
choice ~ price + time + change + comfort | -1
.. ..- attr(*, ".Environment")=<environment: R_GlobalEnv>
.. ..- attr(*, "lhs")=List of 1
.. .. ..$ : symbol choice
.. ..- attr(*, "rhs")=List of 2
.. .. ....
2011 Apr 10
2
Multinomial Logit Model with lots of Dummy Variables
Hi All,
I am attempting to build a Multinomial Logit model with dummy variables of
the following form:
Dependent Variable : 0-8 Discrete Choices
Dummy Variable 1: 965 dummy varsghpow at student.monash.edu.augh@gp1.com
Dummy Variable 2: 805 dummy vars
The data set I am using has the dummy columns pre-created, so it's a table
of 72,381 rows and 1770 columns.
The first 965 columns represent