[Limdep Nlogit List] Running a Multiple Input -Output DEA model in limdep

[Barry Quinn]

Hi, 

 

I have been attempting to run a DEA analysis with 4 outputs and 3 inputs
with their corresponding price information.   I have been using the
following command

 

frontier;lhs=LOANS_TO,CASH_AT_,DEPS_AND,MEMBERS0

;Rhs=OFFICEOP,INTERES0,ADJLABOU

;Rh2=COSTOFPH,COSTOFF0,COSTOFLA;Alg=DEA$

 

But each time i obtain  the following output for what appears to be
stochastic model

 

 

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

| Limited Dependent Variable Model - FRONTIER |

| Maximum Likelihood Estimates                |

| Model estimated: Jul 03, 2008 at 01:13:11PM.|

| Dependent variable             LOANS_TO     |

| Weighting variable                 None     |

| Number of observations              401     |

| Iterations completed                  2     |

| Log likelihood function       -16194.03     |

| Variances: Sigma-squared(v)=*************   |

|            Sigma-squared(u)=*************   |

|            Sigma(v)        =*************   |

|            Sigma(u)        =*************   |

| Sigma = Sqr[(s^2(u)+s^2(v)]=*************   |

| Stochastic Production Frontier, e=v-u.      |

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

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

|Variable | Coefficient  | Standard Error |b/St.Er.|P[|Z|>z] | Mean of X|

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

          Primary Index Equation for Model

 CASH_AT_      941360.451    .155670D+15      .000  1.0000    666488.943

 DEPS_AND      -.91940141    .207437D+10      .000  1.0000   .167134D+08

 MEMBERS0      1.07323389    .244951D+10      .000  1.0000   .291667D+08

          Offset [mean=mu(i)] parameters in one sided error

 OFFICEOP      3165.15693    .100603D+13      .000  1.0000    209418.915

 INTERES0      10046.9602    .302607D+13      .000  1.0000    650960.177

 ADJLABOU       .09928049    .955698D+16      .000  1.0000    6.67278696

          Variance parameters for compound error

 Lambda         .70502733    .116574D+09      .000  1.0000

 Sigma        .137881D+18    .103530D+17    13.318   .0000

 

 

Can anyone see any obvious problem in my command function that i am missing
??

 

 

Many thanks 

 

Barry Quinn