Decision Support Systems: Diagnostics and Explanation methods: In the context of telecommunication networks
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
This thesis work, conducted at Ericsson Software Research, aims to recommend a system setup for a tool to help troubleshooting personal at network operation centres (NOC) who monitors the telecom network. This thesis examines several different artificial intelligence algorithms resulting in the conclusion that Bayesian networks are suitable for the aimed system. Since the system will act as a decision support system it needs to be able to explain how recommendations have been developed. Hence a number of explanation methods have been examined. Unfortunately no satisfactory method was found and thus a new method was defined, modified explanation tree (MET) which visually illustrates the variables of most interest in a so called tree structure. The method was implementation and after some initial testing the method has gained some positive first feedback from stakeholders. Thus the final recommendation consists of a system based on a Bayesian model where the gathered training data is collected earlier from the domain. The users will thus obtain recommendations for the top ranked cases and afterwards get the option to get further explanation regarding the specific cause. The explanation aims to give the user situation awareness and help him/her in the final action to solve the problem.
Place, publisher, year, edition, pages
2013. , 56 p.
IdentifiersURN: urn:nbn:se:umu:diva-73666OAI: oai:DiVA.org:umu-73666DiVA: diva2:633096
Subject / course
Examensarbete i teknisk fysik
Master of Science Programme in Engineering Physics
2013-06-19, Bottenhavet, Linnaeus väg 20, Umeå, 10:48 (Swedish)