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dc.contributor.authorLi, Xiang
dc.date.accessioned2017-03-30T04:30:42Z
dc.date.available2017-03-30T04:30:42Z
dc.date.issued2016-08
dc.identifier.otherli_xiang_201608_phd
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/li_xiang_201608_phd
dc.identifier.urihttp://hdl.handle.net/10724/36807
dc.description.abstractWhile functional neuroimaging has been going through significant advancement in the past decade, there remains a fundamental question of how we can utilize the imaging data to describe brain functional behavior in a reproducible and faithful manner. In this dissertation I have elucidated a series of my works all aims at answering the above question, yet from three different perspectives both regarding to the neuroscience implication and to the scale of the data. Firstly, statistical models are built to characterize the changes of functional organization pattern in individual brains (small size), in order to detect the quasi-stable brain states. Secondly, the concept and corresponding framework of functional connectomics summarize the common connectivity patterns within a group of individuals (medium size), and use them for dynamic transition modeling. Thirdly, dictionary learning method and its distributed implementation enable us for the efficient functional network discovery from population-wise data (large size). Based on these works, we could then eventually learn the set of holistic brain functional space from fMRI big data, through which individual signals can be effectively encoded and analyzed.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectbig data
dc.subjectdistributed computation
dc.subjectmachine learning
dc.subjectfMRI
dc.titleMachine learning approaches towards holistic brain functional space discovery from fMRI big data
dc.typeDissertation
dc.description.degreePhD
dc.description.departmentComputer Science
dc.description.majorComputer Science
dc.description.advisorTianming Liu
dc.description.committeeTianming Liu
dc.description.committeeL. Stephen Miller
dc.description.committeeKang Li


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