This paper concerns the surprisingly wide class of continuous distributions that have densities of the form 2g(t(x)) where g is the density of a symmetric distribution and t is a suitable transformation of scale function. Note the simplicity of the normalising constant and its lack of dependence on the transformation function. It turns out that t should be the inverse of a first iterated symmet...

The familiar logit and probit models provide convenient settings for many binary response applications, but a larger class of link functions may be occasionally desirable. Two parametric families of link functions are investigated: the Gosset link based on the Student t latent variable model with the degrees of freedom parameter controlling the tail behavior, and the Pregibon link based on the ...

nowadays, the environmental impact of transportation project and, especially air pollution impacts, are major concerns in evaluating transportation projects. based on this concern, beside definition of traditional objective functions like total travel time and total investment cost, different type of environmental related function is considered as objective function in urban network design. in...