LINK Subcommand (CSORDINAL command)

The LINK subcommand offers the choice of a cumulative link function to specify the model.

  • The keyword FUNCTION, followed by an equals sign, and a link function keyword are required.
  • If the subcommand is not specified, LOGIT is the default cumulative link function.
  • Only a single cumulative link function can be specified.

CAUCHIT. Cauchit function. f(x)=tan(π(x−0.5))

CLOGLOG . Complementary log-log function. f(x)=log(−log(1−x)

LOGIT. Logit function. f(x)=log(x / (1−x)). This is the default link function.

NLOGLOG. Negative log-log function. f(x)=−log(−log(x))

PROBIT. Probit function. f(x)=Φ−1(x), where Φ−1 is the inverse standard normal cumulative distribution function.