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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 03:39:07 +0530 |

Sorry, James. Jeremy Piger is a different economist. T 2010/7/8 Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>: > 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). > -- 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/

**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>

**Re: st: RE: Mata optimize: does moptimize_result_coefs(M) really work? CORRECTION***From:*Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>

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