Abstract :
The design and implementation of an ontology-based
Web retrieval (ONTOWEB) system is described;
ONTOWEB allows the semantic search of the Web resources
of international organizations such as the World
Bank and the Organisation for Economic Co-operation
and Development (OECD). A firm’s knowledge management
project is introduced first, followed by a description
of the ONTOWEB system’s design, implementation,
and evaluation. The ONTOWEB system has two components:
databases and an ontology-based search engine.
The ontology-based search engine is a tool used to
query the information that has been loaded into the database.
Last, to evaluate the system, an experiment was
conducted to compare the performance of the proposed
system with that of Internet search engines in terms of
relevance and search time. This study shows that ontologies
can be used not only to improve precision, but
also to reduce the search time. Because of the expense
of annotating resources, the domains that contain the
most valuable knowledge, such as the medical and the
business sectors, are prime areas for future ontology
applications
