Performance Analysis of a Deductive Database with a Semantic Web Reasoning Engine: ConceptBase and Racer

Knowledge engineering is a discipline concerned with constructing and maintaining knowledge bases to store knowledge of various domains and using the knowledge by automated reasoning techniques to solve problems in domains that ordinarily require human logical reasoning. Therefore, the two key issues in knowledge engineering are how to construct and maintain knowledge bases, and how to reason out new knowledge from known knowledge effectively and efficiently. The objective of this paper is the evaluation of a Deductive Database system with a Semantic Web reasoning engine. For each system a knowledge base is implemented in such a way that comparable performance measurements can be performed. The performance and scalability are evaluated for class and instance queries.