4 papers
Competing Risks Analysis on Times to Commit Crimes
Jenq-Daw Lee, Cheng K. Lee
A trivariate Weibull survival model using competing risks concept is applied on studying recidivism of committing 3 types of crimes - sex, violent and others. The assumption of ind…
Semi-Competing Risks on A Trivariate Weibull Survival Model
Cheng K. Lee, Jenq-Daw Lee
A setting of a trivairate survival function using semi-competing risks concept is proposed. The Stanford Heart Transplant data is reanalyzed using a trivariate Weibull distribution…
A Bivariate Competing-Risks Model with One Termination Event
Cheng K. Lee
The likelihood function for a competing-risks model with one fatal and one non-fatal event is proposed. A bivariate Weibull using the likelihood function is applied to the Stanford…
A Fractional Survival Model
Cheng K. Lee, Jenq-Daw Lee
A survival model is derived from the exponential function using the concept of fractional differentiation. The hazard function of the proposed model generates various shapes of cur…