Measuring and enhancing the transferability of hidden Markov models for dynamic travel behavioral analysis

Chenfeng Xiong, Di Yang (), Jiaqi Ma, Xiqun Chen and Lei Zhang
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Chenfeng Xiong: University of Maryland
Di Yang: University of Maryland
Jiaqi Ma: University of Cincinnati
Xiqun Chen: Zhejiang University
Lei Zhang: University of Maryland

Transportation, 2020, vol. 47, issue 2, No 5, 585-605

Abstract: Abstract As an emerging dynamic modeling method that incorporates time-dependent heterogeneity, hidden Markov models (HMM) are receiving increased research attention with regards to travel behavior modeling and travel demand forecasting. This paper focuses on the model transferability of HMM. Based on a series of transferability and goodness-of-fit measures, it finds that HMMs have a superior performance in predicting future transportation mode choice, compared to conventional choice models. Aimed at further enhancing its transferability, this paper proposes a Bayesian conditional recalibration approach that maps the model prediction directly to the context data. Compared to traditional model transferring methods, the proposed approach does not assume fixed parameterization and recalibrates the utilities and the prediction directly. A comparison between the proposed approach and the traditional transfer-scaling favors our approach, with higher goodness-of-fit. This paper fills the gap in understanding the transferability of HMM and proposes a practical method that enables potential applications of HMM.

Keywords: Transferability; Hidden Markov models; Recalibration; Travel behavior dynamics; Bayes’ rule (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s11116-018-9900-9

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