Nowadays Decision Support Systems deal with impressive amount of information. Current Decision Support Systems are customized solutions, possible to be used only in the context for which they were developed. In addition to this the information integration is other common problem of the Decision...

The paper provides results of research concerning identification of strategic groups in the Polish banking sector and tests of the usefulness of these groups in the assessment of financial stability. The theory of strategic groups predicts the existence of stable groups of companies, stemming...

This paper studies panel data models with unobserved group factor structures. The group membership of each unit and the number of groups are left unspecified. The number of explanatory variables can be large. We estimate the model by minimizing the sum of least squared errors with a shrinkage...