In the common non-parametric regression model the problem of testing for the parametric form of the conditional variance is considered. A stochastic process based on the difference between the ...

Parametric interval linear systems are a class of mathematical models in which the coefficients of the matrix and the right‐hand side vector depend linearly on one or more parameters constrained ...

The causal effect of a treatment is estimated at different levels of treatment compliance, in a placebo-controlled trial on the reduction of blood pressure. The structural nested mean model makes no ...