000002806 001__ 2806
000002806 005__ 20260120144902.0
000002806 0247_ $$2DOI$$a10.6083/M4B56HGD
000002806 037__ $$aETD
000002806 245__ $$aDetecting health related discussions in everyday telephone conversations for studying medical events in the lives of older adults
000002806 260__ $$bOregon Health and Science University
000002806 269__ $$a2014
000002806 336__ $$aThesis
000002806 502__ $$bM.S.
000002806 502__ $$gComputer Science & Electrical Engineering (sunsetting)
000002806 520__ $$aWe apply semi-supervised topic modeling techniques to detect health-related discussions in everyday telephone conversations, which has applications in large-scale epidemiological studies and for clinical interventions for older adults. The privacy requirements associ- ated with utilizing everyday telephone conversations preclude manual annotations; hence, we explore semi-supervised methods in this task. We adopt a semi-supervised version of Latent Dirichlet Allocation (LDA) to guide the learning process. Within this frame- work, we investigate a strategy to discard irrelevant words in the topic distribution and demonstrate that this strategy improves the average F-score on the in-domain task and an out-of-domain task (Fisher corpus). Our results show that the increase in the number of health-related conversations is statistically associated with actual medical events obtained through weekly self-reports.
000002806 540__ $$fCC BY
000002806 542__ $$fIn copyright - single owner
000002806 650__ $$aPrivacy$$031186
000002806 650__ $$aCommunication$$016935
000002806 650__ $$aSelf Report$$038946
000002806 650__ $$aEpidemiologic Studies$$028825
000002806 650__ $$aTelephone$$026812
000002806 650__ $$aAdult$$014319
000002806 691__ $$aSchool of Medicine$$041369
000002806 692__ $$aCenter for Spoken Language Understanding$$041388
000002806 7001_ $$aSheikhshabbafghi, Golnar$$uOregon Health and Science University$$041354
000002806 7201_ $$aBedrick, Steven$$uOregon Health and Science University$$041354$$7Personal$$eAdvisor
000002806 7201_ $$aShafran, Izhak$$uGoogle, Inc.$$7Personal$$eAdvisor
000002806 8564_ $$9decac8db-9a3d-4878-b237-5cd0d7a31d81$$s1549401$$uhttps://digitalcollections.ohsu.edu/record/2806/files/3574_etd.pdf$$ePublic$$2601809187fbea01e370b63c313abd425$$31
000002806 905__ $$a/rest/prod/j0/98/zb/35/j098zb35k
000002806 909CO $$ooai:digitalcollections.ohsu.edu:2806$$pstudent-work
000002806 956__ $$aGet Accessible Copy$$uhttps://ohsu.libwizard.com/f/requestaccessibledocument
000002806 980__ $$aTheses and Dissertations