{"124981":{"#nid":"124981","#data":{"type":"event","title":"Ph.D. Defense of Dissertation:  Myungcheol Doo","body":[{"value":"\u003Cp\u003ETitle: \u003Cstrong\u003ESpatial and Social Diffusion of Information and Influence: Models and Algorithms\u003C\/strong\u003E\u003Cbr \/\u003E\u003Cbr \/\u003EMyungcheol Doo\u003Cbr \/\u003ESchool of Computer Science\u003Cbr \/\u003ECollege of Computing\u003Cbr \/\u003EGeorgia Institute of Technology\u003Cbr \/\u003E\u003Cbr \/\u003EWhen: Apr 23 Monday 11AM\u003Cbr \/\u003EWhere: KACB 3402\u003Cbr \/\u003E\u003Cbr \/\u003E\u003Cstrong\u003ECommittee:\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EDr. Ling Liu (Advisor, School of Computer Science, Georgia Institute of Technology)\u003C\/li\u003E\u003C\/ul\u003E\u003Cul\u003E\u003Cli\u003EDr. Sham Navathe (School of Computer Science, Georgia Institute of Technology)\u003C\/li\u003E\u003C\/ul\u003E\u003Cul\u003E\u003Cli\u003EDr. Edward Omiecinski (School of Computer Science, Georgia Institute of Technology)\u003C\/li\u003E\u003C\/ul\u003E\u003Cul\u003E\u003Cli\u003EDr. Calton Pu (School of Computer Science, Georgia Institute of Technology)\u003C\/li\u003E\u003C\/ul\u003E\u003Cul\u003E\u003Cli\u003EDr. Lakshmish Ramaswamy (Department of Computer Science, The University of Georgia)\u003C\/li\u003E\u003C\/ul\u003E\u003Cp\u003E\u003Cbr \/\u003E\u003Cstrong\u003ESummary:\u003C\/strong\u003E\u003Cbr \/\u003EWith the ubiquitous connectivity, we are entering an information age where people are connected all the time and information\/influence is diffused continuously. This dissertation research is dedicated towards effective and scalable models and algorithms for effective diffusion of spatial and social influence.\u003Cbr \/\u003E\u003Cbr \/\u003EThis dissertation research has made three unique contributions.\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EFirst, we develop an activity driven and self-configurable social influence model and a suite of computational algorithms to compute and rank social network nodes in terms of their activity-based influence ranks. Our model improves the diffusion effectiveness based on multiple spatial and social parameters, such as diffusion linkage, diffusion location, diffusion energy (heat), diffusion coverage, to name a few.\u003C\/li\u003E\u003C\/ul\u003E\u003Cul\u003E\u003Cli\u003ESecond, we extend our activity-based social influence model by incorporating probabilistic diffusion of influence based on activities, capturing a spectrum of diffusion states from active to stale mode.\u003C\/li\u003E\u003C\/ul\u003E\u003Cul\u003E\u003Cli\u003EWe also examine the effectiveness of incentives such as multi-scale reward points popular in many business settings in stimulating social and spatial dissemination of information and influences. \u0026nbsp;\u003C\/li\u003E\u003C\/ul\u003E\u003Cp\u003EIn this defense, I will give an overview of my dissertation research and focus on the design and evaluation of our activity-based probabilistic approach to modeling social influence and designing influence ranking algorithms. We will show how incentives such as multi-scale rewards may impact on the efficacy of activity based social influence. \u0026nbsp;\u003Cbr \/\u003E\u003Cbr \/\u003E\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Spatial and Social Diffusion of Information and Influence: Models and Algorithms"}],"uid":"1","created_gmt":"2012-04-19 10:44:33","changed_gmt":"2016-10-08 01:58:45","author":"Jupiter","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2012-04-23T16:00:00-04:00","event_time_end":"2012-04-23T16:00:00-04:00","event_time_end_last":"2012-04-23T16:00:00-04:00","gmt_time_start":"2012-04-23 20:00:00","gmt_time_end":"2012-04-23 20:00:00","gmt_time_end_last":"2012-04-23 20:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"47223","name":"College of Computing"},{"id":"50875","name":"School of Computer Science"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003E\u003Ca href=\u0022mailto:myungcheol@gatech.edu\u0022\u003EMyungcheol Doo\u003C\/a\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}