Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, is already up and running.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: estimating production function

From   Scott Merryman <>
Subject   Re: st: estimating production function
Date   Tue, 2 Mar 2010 12:20:48 -0600

Both  -cnsreg- or -frontier- allow linear constraints or -xtreg-
followed by Jeroen Weesie's -linest- (-findit linest- to locate and


On Mon, Mar 1, 2010 at 5:57 AM, Martinez San Roman, Valeriano
<> wrote:
> Dear Stata users,
> I hope you can help me. I am trying to estimate a cobb-douglas
> production function (Y=X1^a*X2^b*X3^c*....) using panel data with fixed
> effects.
> I am using the log of the production function as my functional form,
> that is, Ln(Y) = aLn(X1) + bLn(X2) + cLn(X3)+....
> And I have to assume that we have constant returns to scale, in other
> words, the sum of the exponentials must be equal to 1 (a+b+c+...=1)
> Is there a command to restrict the sum of exponentials to be equal to 1.
> How can I do it?
> Thank you very much,
> Valeriano
*   For searches and help try:

© Copyright 1996–2015 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index