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From |
Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: Mata optimize: does moptimize_result_coefs(M) really work? CORRECTION |

Date |
Thu, 8 Jul 2010 03:36:25 +0530 |

A reproducible example of what Jeremy is talking about can be had by taking the example from the [M], pg. 616: **************************************** clear* sysuse auto, clear mata: // mata drop linregeval() function linregeval(transmorphic M, real rowvector b, real colvector lnf) { real colvector p1, p2 real colvector y1 p1 = moptimize_util_xb(M, b, 1) p2 = moptimize_util_xb(M, b, 2) y1 = moptimize_util_depvar(M, 1) lnf = ln(normalden(y1:-p1, 0, sqrt(p2))) } M = moptimize_init() moptimize_init_evaluator(M, &linregeval()) moptimize_init_depvar(M, 1, "mpg") moptimize_init_eq_indepvars(M, 1, "weight foreign") moptimize_init_eq_indepvars(M, 2, "") moptimize(M) moptimize_result_coefs(M) // chokes here. moptimize_result_eq_coefs(M) end **************************************** There is a discrepancy here between the pdf manual and -mhelp moptimize_result_coefs-. Whereas the latter includes references to both -moptimize_result_coefs()- and -moptimize_result_eq_coefs()-, in the pdf help, the functionality of -moptimize_result_eq_coefs()- is subsumed into -moptimize_result_coefs()-, and only the latter finds mention. And yet in the example above, it is -moptimize_result_eq_coefs()- that actually functions. I believe things are in a state of flux here. T 2010/7/8 Prieger, James <James.Prieger@pepperdine.edu>: > Sorry, the question should have read: > > The Mata manual (M-5, page 605) says that the command > > moptimize_result_coefs(M) > > can be used to post results after optimization. However, > 1) it doesn't seem to work, and > 2) the Stata Do-file Editor doesn't seem to think it is a command, > either (i.e., the Editor doesn't put it in blue type). > > Does anyone know if this is an error in the Mata manual? > N.b. the closely related command "moptimize_result_eq_coefs(M)" _does_ > work, so I guess my question is more academic/beta-testing than anything > else. > > James Prieger > Associate Professor > Pepperdine University School of Public Policy > > James Prieger > Associate Professor > Pepperdine University School of Public Policy > 24255 Pacific Coast Highway > Malibu, CA 90263 > (310) 506-7150 phone > (310) 506-7494 fax > office: SPP 193 > http://faculty.pepperdine.edu/jprieger/ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Prieger, > James > Sent: Wednesday, July 07, 2010 2:38 PM > To: statalist@hsphsun2.harvard.edu > Subject: st: Mata optimize: does moptimize_result_coefs(M) really work? > > The Mata manual (M-5, page 605) says that the command > > moptimize_result_eq_coefs(M) > > can be used to post results after optimization. However, > 1) it doesn't seem to work, and > 2) the Stata Do-file Editor doesn't seem to think it is a command, > either (i.e., the Editor doesn't put it in blue type). > > Does anyone know if this is an error in the Mata manual? > N.b. the closely related command "moptimize_result_eq_coefs(M)" _does_ > work, so I guess my question is more academic/beta-testing than anything > else. > > James Prieger > Associate Professor > Pepperdine University School of Public Policy > > * > * 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/ > > * > * 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/ > -- To every ω-consistent recursive class κ of formulae there correspond recursive class signs r, such that neither v Gen r nor Neg(v Gen r) belongs to Flg(κ) (where v is the free variable of r). * * 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: RE: Mata optimize: does moptimize_result_coefs(M) really work? CORRECTION***From:*Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>

**References**:**st: Mata optimize: does moptimize_result_coefs(M) really work?***From:*"Prieger, James" <James.Prieger@pepperdine.edu>

**st: RE: Mata optimize: does moptimize_result_coefs(M) really work? CORRECTION***From:*"Prieger, James" <James.Prieger@pepperdine.edu>

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