Multinomial Choice in NLOGIT: Data Analysis
These are some of the features of the program operation of importing data and exporting data from NLOGIT to other programs - the READ (import) and WRITE (export) operations. You can also transform and examine the data within the program.
Read (Import Data)
- ASCII, XLS, binary, CSV
- Supported by Stat/Transfer
- Up to 3,000,000 observations
- Merge choice specific (attribute) and generic (characteristic) data in a panel data set format
- Multiple line data input or single line (e.g., from Gauss)
Write (Export Data)
- ASCII
- CSV (can be read directly by Excel)
- NLOGIT system files can be read by Stat/Transfer
Transformations
- All algebraic transformations
- Recoding
- Sorting
- Existing or new variables
- Convert data sets from single to multiple line observations
- Scaling for merging revealed and stated preference data sets
Data Formats for Discrete Choice Models
- Individual choice data
- Frequencies or market shares (proportions)
- Ranks
- Automatic bypass of observations with missing data
- Panel data estimators for multinomial choice
- Multiple choice situations for stated choice modeling
- Internal checks for data consistency
- Coding for attribute nonattendance
Choice Sets
- Fixed number of choices
- Variable number of choices out of universal choice set
- Variable number of choices from individual choice sets
Weighting
- Individual observation weights
- Choice based sampling corrections