der vorliegenden Arbeit wird eine Methode entwickelt, die eine konsistente Aggregation unterschiedlicher …

) constraint on the linear coefficients. Besides identifying the optimal rates of aggregation for these lq-aggregation problems …, our multi-directional (or universal) aggregation strategies by model mixing or model selection achieve the optimal rates … known or unknown error variance, are handled, and the lq-aggregations examined in this work cover major types of aggregation …

next year on average. The main question remains : How aggregation over all income levels should be performed? In order to …