The asymptotic local powers of various panel unit root tests are investigated. The power envelope is obtained under …}, depending on whether or not incidental trends are extracted from the panel data. In the latter case, when the alternative …

This paper studies estimation of a panel data model with latent structures where individuals can be classified into … unknown group structure of vector parameters, we design an algorithm called Panel-CARDS which is a systematic extension of the … comparing vector coefficients in a panel model for homogeneity and introduces a new concept of controlled classification of …