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From |
"Oleksii Birulin" <[email protected]> |

To |
<[email protected]> |

Subject |
st: how to solve nonlinear equations numerically |

Date |
Sun, 20 Jan 2008 20:21:58 +1100 |

Hi everybody, I need to solve nonlinear equations numerically. I have read this faq: http://www.stata.com/support/faqs/lang/nl.html. My case is a bit different, however: I have to solve N (where N is very large) independent nonlinear equations. It seems that I cannot solve them in a cycle one by one (and if would probably be inefficient either) because Stata then thinks I have just one equation with N observations. And I have not found a way for nl to solve all the equations altogether. It seems that the parameters of nl should be specified as scalars. I cannot do that N times. And N is too large for Stata to operate with my variables as vectors. In short, I am estimating a model by maximum likelihood, but my estimation equation is nonlinear and does not have a closed form solution. So, for every ML iteration I need to step outside of ML and solve for my parameters numerically. Will be grateful for any help. Thanks, Oleksii * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: how to solve nonlinear equations numerically***From:*Maarten buis <[email protected]>

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