Modeling Transport Data under Stochastic and Latent Censorship

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Abstract

Data censorship involves two sets of corresponding values: known observations and latent (i.e., unknown) true values. Modeling of censored data has been researched in multiple works, including the famous Tobit model for known and deterministic censorship. However, when modeling demand for transport services, the censorship challenge becomes two-fold: not only is demand data inherently censored by limited supply, but it also typically lacks any account of the difference between observed and true demand. To address this problem, we devise and analyze two complementary methods for censored modeling, when no indication is given about the extent of censorship. The first modeling method is generic, while the other method is non-parametric and utilizes domain knowledge. Our experiments demonstrate both the importance of accounting for censorship and the capability of each method in reconstructing the underlying, latent patterns.
Original languageEnglish
Publication date2021
Number of pages10
Publication statusPublished - 2021
EventhEART 2020: 9th Symposium of the European Association for Research in Transportation - Lyon, France
Duration: 3 Feb 20214 Feb 2021

Conference

ConferencehEART 2020: 9th Symposium of the European Association for Research in Transportation
CountryFrance
CityLyon
Period03/02/202104/02/2021

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