（急）请教：sas中混合logit模型proc步

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有哪位大侠帮忙指点一下：sas中mixed logit的proc步过程？

只知道用proc mdc过程，但具体怎样？大虾帮助啊~~

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关键词：logit模型 logit Log ROC Mixed 模型 SAS proc logit

The following options can be used in the PROC MDC statement.

DATA=SAS-data-set

specifies the input SAS data set. If the DATA= option is not specified, PROC MDC uses the most recently created SAS data set.

OUTEST=SAS-data-set

names the SAS data set that the parameter estimates are written to. See "OUTEST= Data Set" later in this chapter for information about the contents of this data set.

COVOUT

writes the covariance matrix for the parameter estimates to the OUTEST= data set. This option is valid only if the OUTEST= option is specified.

Syntax: MDC Procedure

The MDC procedure is controlled by the following statements:

PROC MDC options ;

MDCDATA options ;

BOUNDS bound1 < , bound2 ...> ;

BY variables ;

ID variable ;

MODEL dependent variables = regressors / options ;

NEST LEVEL(value) = ((values)@(value),..., (values)@(value)) ;

NLOPTIONS options ;

OUTPUT options ;

RESTRICT restriction1 < , restriction2 ...> ;

UTILITY U() = variables, ..., U() = variables ;

[em01]

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你的混合LOGIT模型进展怎样了，向你学习