CRITERIA Subcommand (GENLOG command)

CRITERIA specifies the values used in tuning the parameters for the Newton-Raphson algorithm.

  • If multiple CRITERIA subcommands are specified, the last specification takes effect.

CONVERGE(n). Convergence criterion. Specify a positive value for the convergence criterion. The default is 0.001.

ITERATE(n). Maximum number of iterations. Specify an integer. The default number is 20.

DELTA(n). Cell delta value. Specify a non-negative value to add to each cell frequency for the first iteration. (For the saturated model, the delta value is added for all iterations.) The default is 0.5. The delta value is used to solve mathematical problems created by 0 observations; if all of your observations are greater than 0, we recommend that you set DELTA to 0.

CIN(n). Level of confidence interval. Specify the percentage interval used in the test of generalized log-odds ratios and parameter estimates. The value must be between 50 and 99.99, inclusive. The default is 95.

EPS(n). Epsilon value used for redundancy checking in design matrix. Specify a positive value. The default is 0.00000001.

DEFAULT. Default values are used. DEFAULT can be used to reset all criteria to default values.

Example

GENLOG  DPREF BY RACE ORIGIN CAMP
 /MODEL=MULTINOMIAL
 /CRITERIA=ITERATION(50) CONVERGE(.0001).
  • ITERATION increases the maximum number of iterations to 50.
  • CONVERGE lowers the convergence criterion to 0.0001.