Manual ontology construction has proven to be very
difficult task and is becoming a problem in the process
of acquiring knowledge for ontology engineer. This
article presents a semi-automatic ontological
knowledge base construction framework and several
aspects of evaluating the semi-automatic ontology
generation tool in eLearning Management System
setting. The framework combined an ontology learning
tool called Text2Onto to construct ontology from
scratch and an ontology mapping tool called PROMPT
to map the ontology the existing ontology. Experiment
on generating ontology from text corpus shows a
significant result for knowledge concept extraction.