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Author

W. Phaphan

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Open access Sep 2026

Overdispersed and Zero-Truncated Count Models for Hospitality Insurance Claim Frequencies

Insurance claim frequencies are commonly modeled by Poisson regression, although the equidispersion assumption is often violated in real insurance portfolios. This paper studies count regression models for hospitality insurance claim counts under overdispersion and strictly positive sampling. We formulate the Poisson m...

W. Phaphan, Samach Sathitvudh, Peang-or Yeesa et al. · 0 citations
Open access Sep 2026

A New Nakagami–Weibull Non-Mixture Cure Model with Applications to Right-Censored Survival Data

Cure fraction models provide a useful framework for analysing survival data in which some individuals may never experience the event of interest. This paper introduces a flexible Nakagami–Weibull Non-Mixture Cure (NWNMC) model for right-censored survival data with a long-term surviving fraction, constructed by embeddin...

I. Abdullahi, W. Phaphan · 0 citations

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