As advanced traveler information systems become increasingly prevalent the importance of accurately estimating link travel times grows. Unfortunately, the predominant source of highway traffic information comes from single-loop loop detectors which do not directly measure vehicle speed. The...

A simple goodness-of-fit test is proposed for checking distributional assumptions in a model involving independent but not identically distributed random variables. The asymptotic distribution of the test statistic, which is similar to Pearson's [chi]2, is derived. The method is applied to...

In this short note, we propose a simplified adaptive fence procedure that reduces the computational burden of the adaptive fence procedure proposed by Jiang et al. [Jiang, J., Rao, J.S., Gu, Z., Nguyen, T., 2008. Fence methods for mixed model selection. Ann. Statist. 36, 1669-1692] for mixed...