Mixed Hitting-Time Models

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Abstract

We study mixed hitting-time models, which specify durations as the first time a Levy process (a continuous-time process with stationary and independent increments) crosses a heterogeneous threshold. Such models of substantial interest because they can be reduced from optimal-stopping models with heterogeneous agents that do not naturally produce a mixed proportional hazards structure. We show how strategies for analyzing the identifiability of the mixed proportional hazards model can be adapted to prove identifiability of a hitting-time model with observed covariates and unobserved heterogeneity. We discuss inference from censored data and give examples of structural applications. We conclude by discussing the relative merits of both models as complementary frameworks for econometric duration analysis.
Original languageEnglish
Place of PublicationTilburg
PublisherEconometrics
Number of pages53
Volume2009-62
Publication statusPublished - 2009

Publication series

NameCentER Discussion Paper
Volume2009-62

Keywords

  • duration analysis
  • hitting time
  • identifiability
  • Levy process
  • mixture

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