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在用sf_model做ml max时,总会报错
4 个回复 - 1753 次查看
在对截面数据做SFA时,用了以下几个语句,sf_init总会报错,initial vector: matrix must be dimension 12,这是怎么回事,不知道该怎么做了,求各位大神告知一下,感激不尽!!!
sfmodel ltcD, cost dist(h) fr ...
2020-5-1 21:29 - jinxinren - Stata专版
stata做MLE遇到model not defined的問題
7 个回复 - 3322 次查看
各位朋友,小弟最近在做sfa使用mle的方法去做,參考資料是A practitioner's Guide to Stochastic Frontier Analysis Using Stata
code如下
sfmodel ly, prod dist(h) frontier($xvar) usigmas() vsigmas() show
m ...
2016-11-15 09:28 - davidhongwei32 - Stata专版
MLE for a region switch model
2 个回复 - 2911 次查看
The estimation is done with NLMIXED.
Following the link for additional information.
http://support.sas.com/rnd/app/da/new/802ce/ets/chap4/sect13.htm
data tmp;
do i = 1 to 100;
...
2010-11-3 09:37 - bobguy - SAS专版
A SAS/IML Companion for Linear Models
0 个回复 - 1725 次查看
Linear models courses are often presented as either theoretical or applied. Consequently, students may find themselves either proving theorems or using high-level procedures like PROC GLM to analyze d ...
2015-5-9 11:15 - lasgpope - 量化投资
ebook: SAS/IML companion for linear model
9 个回复 - 4208 次查看
Good book. SAS/IML companion for linear model.
SAS IML is about matrix language, the function like Matlab and is pretty powerful. This writing is really clean. I hope it can help you.
zgp480
2010-5-29 16:25 - zgp480 - 商业数据分析
prototype of SAS/IML for a probit model
1 个回复 - 2184 次查看
You may use it as a prototype for another ML estimation in SAS/IML.
********************************************************************;
data probit;
do i = 1 to 50;
x=rannor(12 ...
2010-11-7 11:24 - bobguy - SAS专版