Abstract
Ontology-based Question Answering System (QAS) has advantage on representing semantic knowledge concept of an object, property, and relation between objects on a particular domain. Ontology-based QAS requires a proper definition of objects, properties, and their relationships in order to work correctly. It is very challenging topic for Bahasa Indonesia, especially when dealing with incomplete question sentences. For example: the sentence with no question word or no question object, or no obscure adverb question. This study designed an Ontology-based QAS that capable for dealing incomplete question sentence. Two approach method has been done to deal with the problem: First, designed an ontology that used a keyword property to find the question objective; Second, designed an architecture that transform the question in natural language into instruction that can be understood by computer. Experiment results shows that the ontology design plays an important role for Ontology-based QAS as well as system design.
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