2016 INFORMS Annual Meeting Program

TC07

INFORMS Nashville – 2016

TC07 102B-MCC Information and Influence Diffusion in Networks Sponsored: Data Mining Sponsored Session Chair: Wenjun Wang, University of Iowa, Pappajohn Business Building, Iowa City, IA, 52242-1994, United States, wenjun-wang@uiowa.edu 1 - Community Detection And Correlation Analysis Lian Duan, Hofstra University, Hempstead, NY, United States, Lian.Duan@hofstra.edu, Nick Street, Yanchi Liu, Meral Binbasioglu, Haibing Lu The advances in graphs play an important role to understand interrelated data. Inside graphs, there are usually community structures where different portion of nodes are more tightly connected to form a group, and community detection has wide applications in marketing, management, health care, and education. Nowadays, many different methods are proposed to detect community structures from different perspective. In our research, we build a connection between community detection and correlation analysis. It helps to utilize the progress in correlation analysis for community detection. 2 - Detection Of Online Manipulation And Information Diffusion Onur Varol, Indiana University, ovarol@indiana.edu Social media have become vehicles for instantly disseminating and accessing information on a global scale. Understanding mechanisms governing information diffusion is important and detection of malicious intents and activities are also curious. In this talk, I will present our prediction and early detection framework for social media campaigns and our online social bot detection platform called BotOrNot. Then I will present our work on information diffusion on heterogenous-intent networks. We experiment with user-level perception of messages, analyze large-scale information cascades, and model information diffusion in heterogeneous-intent networks. 3 - Modeling Influence Diffusion For Viral Marketing In Social Networks Wenjun Wang, University of Iowa, Iowa City, IA, United States, wenjun-wang@uiowa.edu, Nick Street Viral marketing is a technique that induces users in a social network to pass on a marketing message to other users so as to achieve the largest cascade of product sales. It can be formulated as an influence maximization problem under a stochastic diffusion model. In this paper, we propose a novel Multiple-path-based Asynchronous Cascade (MAC) model, which captures both direct influence from neighboring influencers and indirect influence from influencers two or three hops away. It also takes into account influence attenuation along diffusion paths, influence decay over time, and temporal diffusion dynamics. We then investigate various heuristics to address the influence-maximization problem. 4 - How Peer Influence Affects Preference Evolution And Product Selection In Offline Retail We combine offline retail with social network by presenting different types of social network information to consumers. We also investigate how the social influence mechanism may differ for different types of products. We propose a multistage conjoint choice experiment to observe initial preferences and products selection of consumers prior to observing their choice interdependence. We try to show that it is possible to improve marketing response through the visibility of consumers’ social network information. Also, we want to support the recommendation system for offline retail. TC08 103A-MCC Ethics and Sustainable Business Models Invited: Business Model Innovation Invited Session Chair: Elena Belavina, University of Chicago Booth School of Business, Chicago, IL, United States, elena.belavina@chicagobooth.edu 1 - Honesty, Ethical Free Agency And The Hold-up Problem Manu Goyal, University of Utah, Salt Lake City, UT, United States, Manu.Goyal@eccles.utah.edu, Krishnan S Anand, He Chen We construct a finite-horizon model of incomplete contracts, where contracting partners are vulnerable to ex-post opportunism and hold-ups, that also integrates bounded rationality, moral hazard and adverse selection. We prove that an honest player - who never holds up its contracting partner - can obtain strictly greater LIN ZHAO, Tsinghua University, Tsinghua University, Shunde Builiding Room 615, Beijing, 100084, China, zhaolin14@mails.tsinghua.edu.cn

profits than an unconstrained profit-maximizer, even though the latter has access to a superset of strategies, including the option of mimicking the honest type. Our research provides a bridge between normative rationales for honesty, the province of ethics, and profit-maximization, which is axiomatic in economics, by providing a compelling economic rationale for honesty. 2 - Increasing The Adoption Of New Life-improving Technologies Gonzalo Romero, Rotman, University of Toronto, 91 Ferrier Avenue, Toronto, ON, M4K 3H6, Canada, gonzalo.romero@rotman.utoronto.ca, Andre Du Pin Calmon Motivated by the operations of a distributor of life-improving technologies in India, we consider a model where a retailer sells an item to risk averse consumers, who derive an uncertain value from using this product. Without external intervention, the market might collapse such that no sales occur. The distributor intervenes in the market using two levers: (i) educating consumers, which reduces the uncertainty in their valuation and (ii) implementing a reverse logistics channel that allows for regret-returns and also a higher salvage value for the retailer. We compare the relative effectiveness and substitutability degree of each of these levers. 3 - New, Refurbished, And Used: Key Factors That Influence Consumers’ Choices Erin Cassandra McKie, University of South Carolina, 1014 Greene Street, Columbia, SC, 29212, United States, erinmckie@gmail.com, Mark Ferguson, Michael Galbreth, Sriram Venkataraman Remanufacturing is increasingly providing new profit opportunities for firms, as well as more product condition options - such as new, refurbished, and used - for consumers to choose. Using secondary data and choice model analysis techniques, we estimate the influence of various factors on consumers’ purchasing decisions 4 - Kicking Ash: Who (or What) Is Winning The War On Coal? David Drake, Harvard Business School, ddrake@hbs.edu Power generators throughout the U.S. have shed coal capacity at an unprecedented rate over the past few years. Multiple stakeholders have claimed credit - natural gas executives, renewables advocates, policy makers, and environmental NGOs among them. In this nascent work, we explore the extent to which each has impacted the expected life of coal-fired power generating units. TC09 103B-MCC Environmental Logistics and Supply Chain Operations Sponsored: Energy, Natural Res & the Environment I Environment & Sustainability Sponsored Session Chair: Dincer Konur, Missouri University of Science and Technology, Rolla, MO, United States, konurd@mst.edu 1 - Economic And Environmental Considerations In A Stochastic Inventory Control Model With Order Splitting Under Different Delivery Schedules Among Carriers We analyze an integrated inventory control and delivery scheduling problem with stochastic demand and economic and environmental considerations. Models consider order splitting among many carriers and two delivery scheduling policies: sequential splitting and sequential delivery. Bi-objective mixed-integer nonlinear models are formulated and solved with an adaptive -constraint algorithm and an evolutionary search algorithm to approximate the Pareto front. Numerical studies are used to compare the algorithms, explore the effects of demand variance, show how delivery policy and carrier selection affect performance, and document the need for a good approximation of the Pareto front. 2 - Environmental Considerations In Liner Shipping And Vessel Scheduling Maxim A Dulebenets, Florida State University, Tallahassee, FL, United States, mdlbnets@memphis.edu, Mihalis Golias, Sabya Mishra Carbon dioxide emissions from maritime transportation constitute 2.2% of the world’s anthropogenic carbon dioxide emissions. A number of environmental regulations were released by the International Maritime Organization to reduce the pollution levels over the last decade. Considering an increasing attention of the community to environmental issues in liner shipping, this presentation will focus on: 1) approaches for modeling emissions produced by vessels; and 2) alternatives that would reduce vessel emissions and improve environmental sustainability. A number of case studies will be presented to demonstrate how negative environmental externalities can be alleviated. James F Campbell, University of Missouri-St Louis, campbell@umsl.edu, Dincer Konur, Sepideh Monfared

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