Dubecq, S.; Gourieroux, C. - Banque de France - 2012
A large part of the term structure literature interprets the first underlying factors as a level factor, a slope factor …, and a curvature factor. In this paper we consider factor models interpretable as a level factor model, a level and a slope … factor model, respectively. We prove that such models are compatible with no-arbitrage restrictions and the positivity of …