[Limdep Nlogit List] Status=3

Rinaldi, Gustavo gustavo.rinaldi at imperial.ac.uk
Fri Aug 11 23:57:55 EST 2006


Hi,
the exit code of the following frontier model is 3.
I understand (R9-8) that this means "Failure, unable to maximize function."
Is there anything I can do to change this situation?
Regards,

Gustavo

_____________________________________________________________________

FRONTIER;Lhs=LN_PRODU;
    Rhs=LN_L,LN_K,
    LN2_L,LN2_K,
    K_L,one;
    Test:b(4)=0,b(5)=0,b(3)=0$		FRONTIER  TRASLOG CROSS RST2
Initial iterations cannot improve function.Status=3
  Error   805: Initial iterations cannot improve function.Status=3
Function=  .22622235085D+04, at entry,  .49722252678D+03 at exit

+---------------------------------------------+
| Limited Dependent Variable Model - FRONTIER |
| Maximum Likelihood Estimates                |
| Model estimated: Aug 11, 2006 at 11:58:49AM.|
| Dependent variable             LN_PRODU     |
| Weighting variable                 None     |
| Number of observations              203     |
| Iterations completed                  2     |
| Log likelihood function       -497.2149     |
| Variances: Sigma-squared(v)=       .02633   |
|            Sigma-squared(u)=      3.20225   |
|            Sigma(v)        =       .16226   |
|            Sigma(u)        =      1.78948   |
| Sigma = Sqr[(s^2(u)+s^2(v)]=      1.79683   |
| Stochastic Production Frontier, e=v-u.      |
| Wald test of  3 linear restrictions         |
| Chi-squared =   35.43, Sig. level =  .00000 |
+---------------------------------------------+
+---------+--------------+----------------+--------+---------+----------+
|Variable | Coefficient  | Standard Error |b/St.Er.|P[|Z|>z] | Mean of X|
+---------+--------------+----------------+--------+---------+----------+
          Primary Index Equation for Model
 LN_L          2.54640815      .30973363     8.221   .0000    5.51824212
 LN_K          -.02600649      .18146484     -.143   .8860    8.15964051
 LN2_L          .10176152      .13969896      .728   .4663    15.8225152
 LN2_K          .01199545      .04507462      .266   .7901    34.7817688
 K_L           -.13758592      .08692816    -1.583   .1135    46.5146215
 Constant       .85802354     1.03652059      .828   .4078
          Variance parameters for compound error
 Lambda        11.0286253     1.26629538     8.709   .0000
 Sigma         1.79682569      .06680185    26.898   .0000

 ______________________________________________________________


Dr. Gustavo Rinaldi
Tanaka Business School
Imperial College
South Kensington Campus
SW7 2AZ  London UK






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