| bs.se | Performs a parametric bootstrapping standard error approximation |
| gen.init | Generates initial values for mixtures of logistic regressions |
| move.knot | Generates a new set of knots for the following iteration |
| StagedChoiceSplineMix | Performs iterations between an EM algorithm for a mixture of two-stage logistic regressions with fixed candidate knots and knot movements |
| twostglogitregmixEM | Performs an EM algorithm for mixtures of two-stage logistic regressions |