“The purpose of this study is to propose a simplified model for facet analysis that incorporates the principles of facet analysis proposed by both Ranganathan and the CRG. The purpose of this simplified model is to act primarily as a teaching tool to introduce LIS students to a consolidated, and hopefully easy-to-read, classification model that will enable them to understand how faceted classification systems are designed and how they work.”
If you want to learn how to construct a faceted scheme properly you might try reading the following: AIFIA | A Simplified Model for Facet Analysis