[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

From |
Jonathan Hanson <johanson@maxwell.syr.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: vector of independent variables in ML program |

Date |
Tue, 12 Aug 2008 09:29:48 -0400 |

Greetings,

How does one refer to a vector of independent variables from within an ML program? For example, suppose I need to write a gradient vector, the formula for which looks something like this:

∂ ln L/ ∂ Β = (1/sigma^2) x'(y - xΒ)

where x' is a k by 1 vector of the independent variables for an observation. I know that I can refer to y as $ML_y1 and xB as one of the arguments (theta, for instance), but how can I call x' in the formula? Ultimately, I will have multiple equations in this formula, so I need to be able to specify equation from which the x's are coming.

Many thanks,

Jonathan Hanson

Assistant Professor of Political Science

Maxwell School of Citizenship and Public Affairs

100 Eggers Hall

Syracuse University

Syracuse, NY 13244

*

* For searches and help try:

* http://www.stata.com/help.cgi?search

* http://www.stata.com/support/statalist/faq

* http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: vector of independent variables in ML program***From:*"Stas Kolenikov" <skolenik@gmail.com>

- Prev by Date:
**Re: st: tobit?** - Next by Date:
**st: number format in graph labels** - Previous by thread:
**st: tobit?** - Next by thread:
**Re: st: vector of independent variables in ML program** - Index(es):

© Copyright 1996–2017 StataCorp LLC | Terms of use | Privacy | Contact us | What's new | Site index |