logit_log_probability: Construct a native logit log-probability expression

In rbiogeme: Interface to 'Biogeme'

Construct a native logit log-probability expression

Description

This is the log-probability counterpart of logit_probability(). It is compiled directly to Biogeme's public models.loglogit constructor, which preserves the native numerically stable likelihood used by examples such as Swissmetro b20.

Usage

logit_log_probability(
  utilities,
  availability = NULL,
  alternative,
  alternative_codes = NULL
)

Arguments

utilities	Named list of utility expressions keyed by alternatives.
availability	Optional named list of availability expressions.
alternative	Integer code or expression for the observed alternative.
alternative_codes	Optional named integer codes for the utilities.

Value

A Biogeme logit log-probability expression.

rbiogeme documentation built on Sept. 29, 2026, 5:09 p.m.