Browsing Mathematics (Faculty of) by Author "Li, Pengfei"
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Hypothesis Testing in Finite Mixture Models
Li, Pengfei (University of Waterloo, 2007-12-14)Mixture models provide a natural framework for unobserved heterogeneity in a population. They are widely applied in astronomy, biology, engineering, finance, genetics, medicine, social sciences, and other areas. An ... -
Semiparametric inference on the means of multiple nonnegative distributions with excess zero observations
Wang, Chunlin; Marriott, Paul; Li, Pengfei (Elsevier, 2018-07-01)A non-standard, but not uncommon, situation is to observe multiple samples of nonnegative data which have a high proportion of zeros. This is the so-called excess of zeros situation and this paper looks at the problem of ...