A Dynamic Dialog System Using Semantic Web Technologies

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dc.contributor.advisorWijesekera, Duminda
dc.contributor.authorAbabneh, Mohammad
dc.creatorAbabneh, Mohammad
dc.date.accessioned2014-09-18T01:56:56Z
dc.date.available2014-09-18T01:56:56Z
dc.date.issued2014-05
dc.description.abstractA dialog system or a conversational agent provides a means for a human to interact with a computer system. Dialog systems use text, voice and other means to carry out conversations with humans in order to achieve some objective. Most dialog systems are created with specific objectives in mind and consist of preprogrammed conversations. The primary objective of this dissertation is to show that dialogs can be dynamically generated using semantic technologies. I show the feasibility by constructing a dialog system that can be specific to control physical entry points, and that can withstand an attempt to misuse the system by playing back previously recorded conversations. As a solution my system randomly generates questions with a pre-specified difficulty level and relevance, thereby not repeating conversations. In order to do so, my system uses policies to govern the entrance rules, and Item Response Theory to select questions derived from ontologies relevant to those policies. Furthermore, by using contextual reasoning to derive facts from a chosen context, my dialog system can be directed to generate questions that are randomized within a topic, yet relevant to the task at hand. My system design has been prototyped using a voice interface. The prototype demonstrates acceptable performance on benchmark data.
dc.format.extent125 pages
dc.identifier.urihttps://hdl.handle.net/1920/8911
dc.language.isoen
dc.rightsCopyright 2014 Mohammad Ababneh
dc.subjectInformation technology
dc.subjectComputer science
dc.subjectInformation science
dc.subjectAutomated Physical Access Control
dc.subjectComputerized Adaptive Testing of Personal Trust
dc.subjectContextual Reasoning
dc.subjectDynamic Dialogs
dc.subjectInteractive Voice Response
dc.subjectItem Response Theory
dc.titleA Dynamic Dialog System Using Semantic Web Technologies
dc.typeDissertation
thesis.degree.disciplineInformation Technology
thesis.degree.grantorGeorge Mason University
thesis.degree.levelDoctoral

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