关键词: 本体，功能检索，描述逻辑，序列模式，PrefixSpan算法，概念

Abstract: Recently, the Component Based Software Development has become the main direction of software development, and with the expansion of the component library, efficient retrieval is crucial for us to improve the software development. The realization of component functional retrieval was attained through semantic modeling of components,which not only made up for the lack of semantic expression, but also enhanced the retrieval efficiency. Ontology was used to describe component to create ontology library while the method of sampling sectuence pattern mining was utilined to find out frequency sequence patterns based on the historical data of retrieval, which were used to construct retrieval relationship map later. Finally, the most possible retrieval sequences were obtained to instruct users to complete component functional retrieval with high efficiency and accuracy.

Key words: Ontology, Functional retrieval, Description logics, Sequence pattern, PrefixSpan algorithm, Concept