-
作者：van Ryzin, Garrett; Vulcano, Gustavo
作者单位：Columbia University; New York University; Universidad Torcuato Di Tella
摘要：We propose an expectation-maximization (EM) method to estimate customer preferences for a category of products using only sales transaction and product availability data. The demand model combines a general, rank-based discrete choice model of preferences with a Bernoulli process of customer arrivals over time. The discrete choice model is defined by a probability mass function (pmf) on a given set of preference rankings of alternatives, including the no-purchase alternative. Each customer is ...
-
作者：Baucells, Manel; Osadchiy, Nikolay; Ovchinnikov, Anton
作者单位：University of Virginia; Emory University; Queens University - Canada
摘要：The decision to buy an item at a regular price or wait for a possible markdown involves a multidimensional trade-off between the value of the item, the delay in getting it, the likelihood of getting it, and the magnitude of the price discount. Such trade-offs are prone to behavioral anomalies by which human decision makers deviate from the discounted expected utility model. We build an axiomatic preference model that accounts for three well-known anomalies and produces a parsimonious generaliz...
-
作者：Raghunathan, Srinivasan; Tang, Christopher S.; Yue, Xiaohang
作者单位：University of Texas System; University of Texas Dallas; University of California System; University of California Los Angeles; University of Wisconsin System; University of Wisconsin Milwaukee
摘要：The bullwhip effect has been extensively studied primarily based on the analysis of various single-product models with a few exceptions. We extend the single-product analysis to the multiproduct setting of interdependent demand streams with auto-correlation and cross-product correlation, as well as contemporaneous correlation across forecasting errors. We find that interdependency between demand streams plays a critical role in determining the existence and magnitude of the bullwhip effect. Sp...
-
作者：L'Ecuyer, Pierre; Maille, Patrick; Stier-Moses, Nicolas E.; Tuffin, Bruno
作者单位：Universite de Montreal; Universite de Rennes; IMT - Institut Mines-Telecom; IMT Atlantique; Universidad Torcuato Di Tella; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
摘要：When a keyword-based search query is received by a search engine, a classified ads website, or an online retailer site, the platform has exponentially many choices in how to sort the search results. Two extreme rules are (a) to use a ranking based on estimated relevance only, which improves customer experience in the long run because of perceived quality and (b) to use a ranking based only on the expected revenue to be generated immediately, which maximizes short-term revenue. Typically, these...
-
作者：Hojjat, Ali; Turner, John; Cetintas, Suleyman; Yang, Jian
作者单位：University System Of New Hampshire; University of New Hampshire; University of California System; University of California Irvine; Yahoo! Inc; Yahoo! Inc
摘要：Motivated by recent trends in online advertising and advancements made by online publishers, we consider a new form of contract that allows advertisers to specify the number of unique individuals that should see their ad (reach) and the minimum number of times each individual should be exposed (frequency). We develop an optimization framework that aims for minimal under-delivery and proper spread of each campaign over its targeted demographics. As well, we introduce a pattern-based delivery me...
-
作者：Yeltekin, Sevin; Cai, Yongyang; Judd, Kenneth L.
作者单位：Carnegie Mellon University; University of Chicago; Stanford University; University System of Ohio; Ohio State University; National Bureau of Economic Research
摘要：We develop a numerical method for computing all pure strategy subgame-perfect equilibrium values of dynamic strategic games with discrete states and actions. We define a monotone mapping that eliminates dominated strategies, and when applied iteratively, delivers an accurate approximation to the true equilibrium payoffs of the underlying game. Our algorithm has three parts. The first provides an outer approximation to equilibrium values, constructed so that any value outside of this approximat...
-
作者：Cohen, Maxime C.; Leung, Ngai-Hang Zachary; Panchamgam, Kiran; Perakis, Georgia; Smith, Anthony
作者单位：New York University; City University of Hong Kong; Massachusetts Institute of Technology (MIT)
摘要：Sales promotions are important in the fast-moving consumer goods (FMCG) industry due to the significant spending on promotions and the fact that a large proportion of FMCG products are sold on promotion. This paper considers the problem of planning sales promotions for an FMCG product in a grocery retail setting. The category manager has to solve the promotion optimization problem (POP) for each product, i.e., how to select a posted price for each period in a finite horizon so as to maximize t...
-
作者：Song, Jing-Sheng; Xiao, Li; Zhang, Hanqin; Zipkin, Paul
作者单位：Duke University; Chinese University of Hong Kong; National University of Singapore
摘要：We consider a single-product, two-source inventory system with Poisson demand and backlogging. Inventory can be replenished through a normal supply source, which consists of a two-stage tandem queue with exponential production time at each stage. We can also place an emergency order by skipping the first stage, for a fee. There is no fixed order cost. There are linear order, holding, and back-order costs. Through a new approach, we obtain optimal ordering policies for the discounted or long-ru...
-
作者：Soh, Seung Bum; Gurvich, Itai
作者单位：Sejong University
摘要：Call centers attribute different values to different customer segments. These values are reflected in quality-of-service targets. The prevalent target service factor (TSF) formulation requires, for example, that 80% of VIP customers wait less than 20 seconds while setting the target to 30 seconds for non-VIP customers. The call center must determine the staffing level together with a prioritization rule that meets these targets at minimal cost. In practice, because of the underlying complexity...
-
作者：Chan, Carri W.; Dong, Jing; Green, Linda V.
作者单位：Columbia University; Northwestern University
摘要：In order for a patient to be discharged from a hospital unit, a physician must first perform a physical examination and review the pertinent medical information to determine that the patient is stable enough to be transferred to a lower level of care or be discharged home. Requiring an inspection of a patient's readiness for discharge introduces an interesting dynamic where patients may occupy a bed longer than medically necessary. Motivated by this phenomenon, we introduce a queueing system w...
