A growing literature studies long-term income persistence across more than two generations. Despite a rich understanding of measurement-related biases for the parentchild model, far less is known multigenerational model that captures transmission from parents and grandparents. We show even using 25-year average can result in spurious grandparent coefficients. Importantly, given parental measure...

This paper introduces the problem of coresets for regression problems to panel data settings. We first define several variants with and then present efficient algorithms construct size that depend polynomially on 1/$\varepsilon$ (where $\varepsilon$ is error parameter) number parameters - independent individuals in or time units each individual observed for. Our approach based Feldman-Langberg ...