AN INTEGRATION OF QUANTITATIVE AND QUALITATIVE KNOWLEDGE IN-PROCESS ENGINEERING

A value of a qualitative variable (derivative) can be positive, negati ve, or zero. Qualitative models are such models which contain qualitat ive variables only. Some parameters of an industrial process are measu rable. Their time records are available. The main goal of this paper i s to predict qualitative behaviour of all those variables which are no t measured (cannot be measured) using time records of all such variabl es which are measured. Two case studies (damped oscillation, three rea ctor system) are given in full details.