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A Finite-Horizon Mixture Cure Model with Application to Online Flea Market Data

Author

Listed:
  • Yuji Komiyama
  • Yasumasa Matsuda
  • Masakazu Ishihara

Abstract

This study proposes a mixture cure model that latently divides a population based on event occurrence within a finite time horizon. Conventional models rely on event occurrence over an infinite horizon, introducing untestable assumptions that often lead to issues with identifiability and interpretability. By shifting the estimand to a specific period of interest, the proposed approach reduces reliance on these infinite-tail assumptions and aligns interpretations more closely with finite-horizon decision-making objectives. Through simulation studies, we first evaluate the statistical properties of the proposed estimator, including estimation bias and variance. We further show that relying on conventional infinite-horizon models for finite-horizon decision-making can lead to erroneous judgments. Finally, we apply the model to transaction data from Mercari, a Japanese online flea market platform. The empirical results reveal that the proposed model identifies different significant variables compared to the conventional model, offering interpretations that better reflect seasonal variation in user behavior.

Suggested Citation

  • Yuji Komiyama & Yasumasa Matsuda & Masakazu Ishihara, 2026. "A Finite-Horizon Mixture Cure Model with Application to Online Flea Market Data," DSSR Discussion Papers 151, Graduate School of Economics and Management, Tohoku University.
    • Handle: RePEc:toh:dssraa:151
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    File URL: https://hdl.handle.net/10097/0002008031
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    References listed on IDEAS

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