[Limdep Nlogit List] Standard Errors for Elasticities of Random Parameter Conditional Logit

Liberini Federica liberini at kof.ethz.ch
Mon Dec 4 22:04:09 AEDT 2017 

Dear Bill, 

to check whether the issue was the syntax used for my estimation command, I also estimated a simpler model specification, using this alternative syntax:

nlogit; lhs=choice,nij,altcode
      ; choices=AT,BE,BR,CA,CH,DE,DK,DOM,ES,FI,FR,GB,IE,IT,NL,NO,RU,SE,US 
      ;rhs=one,altstr 
      ;rh2=parstr 
      ;fcn=altstr(n)
      ;checkdata
      ;pds=3
      ;maxit=400
      ;alg=bfgs
      ;pts=100; halton
      ;effects:altstr(*)
      ; ALL $

Once again, the elasticities are only displayed in the format of a matrix, with no reported SE (see a partial pasted result below). Could the matter be the version of my software (NLOGIT5)?

Many thanks, 
Federica


Elasticity wrt change of X in row choice on Prob[column choice]
--------+-----------------------------------------------------------------------
ALTSTR  |      AT       BE       BR       CA       CH       DE       DK      DOM
--------+-----------------------------------------------------------------------
      AT|  -.1779    .0005    .0005    .0005    .0005    .0005    .0005    .0005
      BE|   .0019   -.2309    .0019    .0019    .0019    .0019    .0019    .0019
      BR|   .0009    .0009   -.2436    .0009    .0009    .0009    .0009    .0009
      CA|   .0013    .0013    .0013   -.1318    .0013    .0013    .0013    .0013
      CH|   .0003    .0003    .0003    .0003   -.0613    .0003    .0003    .0003
      DE|   .0016    .0016    .0016    .0016    .0016   -.0974    .0016    .0016
      DK|   .0010    .0010    .0010    .0010    .0010    .0010   -.1756    .0010
     DOM|   .2932    .2932    .2932    .2932    .2932    .2932    .2932   -.0569
--------+-----------------------------------------------------------------------
ALTSTR  |      ES       FI       FR       GB       IE       IT       NL       NO
--------+-----------------------------------------------------------------------
      AT|...


-----Original Message-----
From: Limdep [mailto:limdep-bounces at mailman.sydney.edu.au] On Behalf Of Liberini Federica
Sent: 04 December 2017 10:25
To: Limdep and Nlogit Mailing List <limdep at mailman.sydney.edu.au>
Subject: Re: [Limdep Nlogit List] Standard Errors for Elasticities of Random Parameter Conditional Logit

Thank you very much for your reply. I have tried the "; ALL $" option at the end of the command, but the output did not change for the version I got without the "; ALL $" option.

To be more precise, this is (a part of) the matrix of elasticities that I get from the command shown earlier (augmented by the "; ALL $" option).



Any other way of getting the Standard Errors of these elasticities?

Many thanks
Federica





Elasticity wrt change of X in row choice on Prob[column choice]

--------+-----------------------------------------------------------------------

ALTSTR  |      AT       BE       BR       CA       CH       DE       DK      DOM

--------+-----------------------------------------------------------------------

      AT|  -.4368   -.0122   -.0151    .0156    .0140    .0220    .0076    .0043

      BE|  -.0454   2.3870   -.2807    .0040    .0154    .0243   -.0458    .0045

      BR|  -.0504   -.1873   2.9656   -.0132    .0030    .0021   -.0501    .0015

      CA|   .0320   -.0083   -.0130  -1.3293    .0569    .0628    .0320    .0209

      CH|   .0096    .0027    .0018    .0154  -1.7195    .0182    .0095    .0146

      DE|   .0628    .0166    .0077    .0921    .0996  -1.4425    .0623    .0430

      DK|   .0135   -.0291   -.0354    .0310    .0286    .0380   -.3857    .0088

     DOM|  -.0036   -.0018   -.0014   -.0055   -.0089   -.0070   -.0036    .0006

--------+-----------------------------------------------------------------------

ALTSTR  |      ES       FI       FR       GB       IE       IT       NL       NO

--------+-----------------------------------------------------------------------

      AT|  -.0038    .0057   -.0122    .0016    .0166    .0020    .0076    .0016

      BE|  -.1400   -.0604   -.1697   -.0902    .0167   -.0880   -.0055   -.0943

      BR|  -.1141   -.0602   -.1843   -.0866    .0005   -.0808   -.0486   -.0840

      CA|   .0067    .0272   -.0076    .0209    .0634    .0191    .0303    .0175

      CH|   .0047    .0084    .0049    .0069    .0209    .0067    .0092    .0067

      DE|   .0302    .0549    .0219    .0468    .1068    .0442    .0631    .0449

      DK|  -.0106    .0104   -.0266    .0051    .0339    .0010    .0147    .0053

     DOM|  -.0025   -.0034   -.0022   -.0039   -.0076   -.0028   -.0039   -.0030

--------+--------------------------

ALTSTR  |      RU       SE       US

--------+--------------------------

      AT...





-----Original Message-----
From: Limdep [mailto:limdep-bounces at mailman.sydney.edu.au] On Behalf Of William Greene
Sent: 01 December 2017 04:42
To: Limdep and Nlogit Mailing List <limdep at mailman.sydney.edu.au>
Subject: Re: [Limdep Nlogit List] Standard Errors for Elasticities of Random Parameter Conditional Logit



Federica.  Try adding ;ALL to the command, to request the full set of statistics for the elasticity.

/Bill Greene



On Mon, Nov 27, 2017 at 6:21 AM, Liberini Federica <liberini at kof.ethz.ch<mailto:liberini at kof.ethz.ch>>

wrote:



> Hello,

>

> I have estimated a random parameter conditional logit model, using the

> command NLOGIT.

> So far, I used the option ";Effects: x (*)" to obtain the elasticities

> of choosing each model's alternative w.r.t to variable x. Is there a

> way of obtaining standard errors for these elasticities?

> I tried using the command "Partial Effects", but Limpdep returns the

> error message saying that "Previous model did not store model setup

> for PARTIALS.".

>

> Many Thanks,

> Federica

>

> p.s.> here's a synthesis of the command I am using now

>

> nlogit; lhs=choice,nij,altcode

>       ; choices=AT,BE,BR,CA,CH,DE,DK,DOM,ES,FI,FR,GB,IE,IT,NL,NO,RU,SE,US

>       ; model: U(AT,BE,BR,CA,CH,DE,DK,DOM,ES,

> FI,FR,GB,IE,IT,NL,NO,RU,SE,US)=

>         <ATb0,BEb0,BRb0,CAb0,CHb0,DEb0,DKb0,DOMb0,ESb0,FIb0,

> FRb0,GBb0,IEb0,ITb0,NLb0,NOb0,RUb0,SEb0,0> +

>         <AToloc,BEoloc,BRoloc,CAoloc,CHoloc,DEoloc,DKoloc,0,ESoloc,

> FIoloc,FRoloc,GBoloc,IEoloc,IToloc,NLoloc,NOoloc,RUoloc,SEoloc,0> * X1

> +

>

> <cbtx,cbtx,cbtx,cbtx,cbtx,cbtx,cbtx,0,cbtx,cbtx,cbtx,

> cbtx,cbtx,cbtx,cbtx,cbtx,cbtx,cbtx,cbtx>* X2 +

> <mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,0,mcbtx,

> mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,mcbtx,mcbtx>*Dumm1*X2

> +

>

> <0,0,0,0,0,0,0,domtx,0,0,0,0,0,0,0,0,0,0,0>*X2 +

> <0,0,0,0,0,0,0,mndomtx,0,0,0,0,0,0,0,0,0,0,0>*Dumm1*X2 +

>

> ; fcn= cbtx(n)

> ; rpl

> ; maxit=400

> ; halton; pts=50

> ; alg=bfgs

> ; effects: X2 (*) $

>

>

> _______________________________________________

> Limdep site list

> Limdep at mailman.sydney.edu.au<mailto:Limdep at mailman.sydney.edu.au>

> http://limdep.itls.usyd.edu.au

>

>





--

William Greene

Department of Economics

Stern School of Business, New York University

44 West 4 St., 7-90

New York, NY, 10012

URL: https://protect-au.mimecast.com/s/q0YwBQfk2LenF9?domain=people.stern.nyu.edu

Email: wgreene at stern.nyu.edu<mailto:wgreene at stern.nyu.edu>

Ph. +1.212.998.0876

Editor in Chief: Journal of Productivity Analysis Editor in Chief: Foundations and Trends in Econometrics Associate Editor: Economics Letters Associate Editor: Journal of Business and Economic Statistics Associate Editor: Journal of Choice Modeling _______________________________________________

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