A Semiquantitative Approach to Study Semiqualitative Systems

Abstract

In this paper is proposed a semiquantitative methodology to study models of dynamic systems with qualitative and quantitative knowledge. This qualitative information may be composed by: operators, envelope functions, qualitative labels and qualitative continuous functions. A formalism is also described to incorporate this qualitative knowledge into these models. The methodology allows us to study all the states (transient and stationary) of a semiquantitative dynamic system. It also helps to obtain its behaviours patterns. The methodology is applied to a logistic growth model with a delay.