# Abstract

## Mixed Logits with Bounded Distributions

### Author: Kenneth Train

Copyright (c) 2002. Kenneth Train.
**Keywords**: discrete choice, logit,
simulation, Bayes

**References**:
Kenneth Train and Garrett Sonnier,
Mixed Logits with Bounded Distributions of Partworths,
December 2002.

**Description**:
As described in the paper, latent terms are distributed normal with
mean denoted b and covariance denoted Omega. In the code, we use A and
D for the mean and covariance of the latent terms. In the paper, the
latent term of each person is called beta_{n}. In the code, the
matrix B contains the latent terms for each person. This matrix has
one row for each person, containing that person's latent terms. The
coefficients of utility (i.e., the partworths) are transformations of
the latent terms. The code allows for eight distributions of
coefficients, each of which implies a transformation of the normal
latent terms as described in the paper. The coefficients are held in
the matrix C, which has one row for each person, containing that
person's coefficients.

**Platforms**: Gauss. The code is written in
GAUSS, using GAUSS for Windows, Version 3.2.32. It has not been
tested on other versions of GAUSS. GAUSS command files are generally
transferable; however, modifications may be required for site-specific
issues.

**Support**:
This code was developed by Kenneth Train at the University of
California, Berkeley. If you discover problems or have questions,
please call or e-mail Ken Train at 415-291-1023,
train@econ.berkeley.edu.

**By clicking on the links below, you agree that you have read
our
disclaimer, understand it, and will
abide by its terms and conditions.**

**Archive files**:
train1202.zip.

The programs, sample data, and output are contained
in the files described in the manifest below. If you click on
the zip archive (train1202.zip), you will download an archive that
requires PKWare's unzip software to expand the archive.

**Manifest**:

-rw-r--r-- 1 katagiri staff 10860 Dec 17 17:29 manual.txt
-rw-r--r-- 1 katagiri staff 16733 Dec 17 17:17 mxlhb.txt
-rw-r--r-- 1 katagiri staff 65713 Dec 18 15:05 mxlhb.zip
-rw-r--r-- 1 katagiri staff 14638 Dec 17 17:17 out.txt
-rw-r--r-- 1 katagiri staff 3295 Dec 17 17:43 readme.txt
-rw-r--r-- 1 katagiri staff 1900 Dec 17 12:53 t.txt
-rw-r--r-- 1 katagiri staff 329448 Dec 17 15:05 x.txt
-rw-r--r-- 1 katagiri staff 28204 Dec 17 12:53 y.txt

Archived by Grace Katagiri, 18 December 2002.

Last modified: 12/18/2002