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| From | Song Nhac <songnhac@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Decompose the technical efficiency |
| Date | Sun, 12 Jun 2011 08:28:02 +0200 |
Many thank Scott, It works. Have a nice day. SongNhac On Sun, Jun 12, 2011 at 4:14 AM, Scott Merryman <scott.merryman@gmail.com> wrote: > Isn't necessary to calculate the relative inefficiency (r(max) - u) first? > > For example: > > webuse xtfrontier1, clear > xtreg lnwid lnwo lnmac,re > predict u,u > sum u > gen te_re = exp(-(r(max) - u)) > sum te > > Scott > > > On Sat, Jun 11, 2011 at 6:03 AM, Song Nhac <songnhac@gmail.com> wrote: >> Dear All, >> >> I employ the command as: >> >> xtreg profit loan earningasset priceoflabor priceoffund equity totalasset, re >> >> to find the technical efficiency of banks. And decompose the effect >> u_i as the inefficiency and TE=exp(-u_i) , >> I know that in this command, we assume that ui~Gaussian. But I found >> that the TE is greater than 1. Anyone know how I put more assumption >> to u_i? Since I run xtfrontier...., ti- it gave me a quite different >> TE. >> >> My purpose is to compare the unobservable part with the TE, so that >> why I intend to employ xtreg since from xtfrontier- I cannot decompose >> the error term or get the value of v_it. >> >> Thank for your kindly attention and support. >> >> Great weekend. >> Song Nhac > * > * 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/