There has been considerable work on user browsing models for search engine results, both organic and sponsored. The click-through rate (CTR) of a result is the product of the probability of examination (will the user look at the result) times the perceived relevance of the result (probability of a click given examination). Past papers have assumed that when… (More)
—This work addresses the multi-target tracking problem in the nonlinear Gaussian system. One probability hypothesis density filtering algorithm based on Gaussian-Hermite numerical integration is proposed. In order to calculate integrations in the Gaussian mixture probability hypothesis density filter, the Gaussian-Hermite numerical integration method is… (More)
In the title compound, C(13)H(16)O(4), the terminal carboxyl-ate groups are twisted to each other at a dihedral angle of 23.80 (9)°. Weak inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into supra-molecular chains along the a axis.