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From |
Ada Ma <pec187@abdn.ac.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: -predict- in a system of equations |

Date |
Sat, 22 May 2004 17:52:04 +0100 |

Hi Rafa,

I'm going to make another rustic suggestion after reading your email to Michael Blasnik, again it might not be of much use. My suggestion is:

How about if you -append- data1.dta and data2.dta? (And plug in a dummy in data2.dta before you -append-.)

Hope it helps.

Ada

R.E. De Hoyos wrote:

Michael, Thanks for your answer. -predict- wont work because several equations are being estimated. Suppose I estimate -heckman- using data1.dta, then a vector e(b) is created in which -predict- is based on. Once a second equation is estimated, e.g. -mlogit- a new vector is created, let's say to e(b') and the old one is being lost. When I change to data2.dta I want to be able to predict (or score) using both e(b) and e(b'), therefore I needed a way to save these vectors, which your suggestion is doing very well. It would be quite useful to have an option to save all the -predict- properties (at least temporary) to use them in an alternative dataset. With -matrix score- I can only form linear combinations of the previously saved vectors e(b)s and the new Xs, while I might be more interested in the fitted probabilities (as in the case of limited dependant variables eq.) Thanks again, Rafa

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**Follow-Ups**:**Re: st: -predict- in a system of equations***From:*"R.E. De Hoyos" <redeho2@hotmail.com>

**References**:**Re: st: Top ten tricks***From:*Bill Rising <wrrisi01@athena.louisville.edu>

**st: -predict- in a system of equations***From:*"R.E. De Hoyos" <redeho2@hotmail.com>

**Re: st: -predict- in a system of equations***From:*Ada Ma <pec187@abdn.ac.uk>

**Re: st: -predict- in a system of equations***From:*"R.E. De Hoyos" <redeho2@hotmail.com>

**Re: st: -predict- in a system of equations***From:*"Michael Blasnik" <michael.blasnik@verizon.net>

**Re: st: -predict- in a system of equations***From:*"R.E. De Hoyos" <redeho2@hotmail.com>

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