ESTIMATION OF MULTINOMIAL PROBIT MODEL WITH STRUCTURED COVARIANCE USING SIMULATION METHOD

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  • シミュレーション法による構造化プロビットモデルの推定特性
  • シミュレーションホウ ニ ヨル コウゾウカ プロビットモデル ノ スイテイ ト

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The complexity of the computational process has deterred applications of the mutinomial probit model, compared to the wide use of the logit models. However, recent improvements of both the estimation algorithms using simulation methods and the covariance matrix simplification may be a motivation to apply probit models broadly in the transportation field because they are fundamentally more flexible than the logit models. We proposed another version of the multinomial probit model with a structured covariance matrix to represent any overlapped relation between route alternatives. In this paper, we examined the parameter estimatability and the stability of choice probabilities and user benefits by the simulation method.

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