by Yannis Tzitzikas, Anastasia Analyti, Nicolas Spyratos, Panos Constantopoulos
In Information Modelling and Knowledge Bases XV, 13th European-Japanese Conference on Information Modelling and Knowledge Bases, EJC’03
http://www.info.fundp.ac.be/~ytz/publications/Tzitzikas_EJC_2003.pdf
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Abstract:
Abstract. One way of designing a taxonomy is by identifying a number of different aspects, or facetsof the domain and then designing one taxonomy per facet. In such a faceted taxonomy, the indexing of objects is done by combining terms from different facets. A faceted taxonomy has several advantages by comparison to a single hierarchical taxonomy, such as conceptual clarity, compactness and scalability. However, a major drawback of faceted taxonomies is the possibility of forming a large number of invalid combinations of terms, i.e. combinations of terms that do not apply to any object of the underlying domain. The presence of such invalid combinations causes serious problems during object indexing or browsing. To alleviate this problem, we propose an algebra of taxonomies whose operators allow the efficient and flexible specification of only valid combinations of terms. This algebra can be used in order to construct very big compound taxonomies in a very systematic and efficient way. 1
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