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作者：Li, Jun; Huang, Yizhe; Li, Yan-Fu; Wang, Shuming
作者单位：Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; University of Texas System; University of Texas Austin; Tsinghua University
摘要：In this paper, we consider a redundancy allocation problem in a series-parallel system with uncertain component lifetimes of multiple states, which involves multitype components and mixed redundancy strategy. We develop a distributionally robust redundancy allocation model using state-dependent ambiguity set, which describes the mean, expected cross-deviation, and the support conditional on each state of the component lifetime distribution. Our structural analysis of the worst-case system reli...
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作者：Evgeniou, Theodoros; Fekom, Mathilde; Ovchinnikov, Anton; Porcher, Raphael; Pouchol, Camille; Vayatis, Nicolas
作者单位：Universite Paris Cite; Universite Paris Saclay; Queens University - Canada; Universite Paris Cite; Institut National de la Sante et de la Recherche Medicale (Inserm); Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Mathematical Sciences (INSMI); Universite Paris Cite
摘要：The widespread lockdowns imposed in many countries at the beginning of the COVID-19 pandemic elevated the importance of research on pandemic management when medical solutions such as vaccines are unavailable. We present a framework that combines a standard epidemiological SEIR (susceptible-exposed-infected-removed) model with an equally standard machine learning classification model for clinical severity risk, defined as an individual's risk of needing intensive care unit (ICU) treatment if in...
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作者：Shahmanzari, Masoud; Tanrisever, Fehmi; Eryarsoy, Enes; Sensoy, Ahmet
作者单位：Ozyegin University; Brunel University; Ihsan Dogramaci Bilkent University; Sabanci University
摘要：Throughout the current COVID-19 pandemic, governments have implemented a variety of containment measures, ranging from hoping for herd immunity (which is essentially no containment) to mandating complete lockdown. On the one hand, containment measures reduce lives lost by limiting the disease spread and controlling the load on the healthcare system. On the other hand, such measures slow down economic activity, leading to lost jobs, economic stall, and societal disturbances, such as protests, c...
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作者：Lu, Yingda; Wang, Youwei; Chen, Yuxin; Xiong, Yun
作者单位：University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; Fudan University; New York University; NYU Shanghai; Fudan University; Fudan University
摘要：In this paper, we employ large-scale sensor data to examine the impact of data-based intelligence and work-related experience on the time efficiency of individual taxi drivers, measured by their propensity of choosing the fastest routes. The identification strategy is built on (1) a unique exogenous policy shock-banning taxi-hailing app with an embedded GPS system, and (2) a measure of nonrecurring congestion avoidance, enabled by the real-time sensor data, which serves as a proxy for GPS usag...
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作者：Fang, Zhen; Fan, Ming; Jain, Apurva
作者单位：Fudan University; University of Washington; University of Washington Seattle; Fudan University
摘要：Streaming media companies have changed how contents are consumed, produced, and delivered. This research develops a theoretical model on optimal content policies for streaming media companies in order to maximize customer engagement. We have the following interesting findings. First, in contrast to the results in prior literature that firms produce just enough programs and coverage intervals of the programs do not overlap, we show that placing programs closer can be a better policy for engagem...
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作者：Anand, Vic; Balakrishnan, Ramji; Gavirneni, Srinagesh
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; University of Iowa; Cornell University; University of Illinois System; University of Illinois Urbana-Champaign
摘要：Limited information about the demand for some of the resources needed to produce goods and services (e.g., incomplete and imperfect bills of materials) forces firms to use heuristics when planning resource capacity. We examine the performance of five heuristics: two drawn from practice, two that modify observed approaches, and one motivated by theory. We measure performance as the ratio of the expected cost of supply-demand mismatch from using a heuristic to the value in the full-information s...
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作者：Keshanian, Kimia; Ramasubbu, Narayan; Dutta, Kaushik
作者单位：University of Tampa; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; State University System of Florida; University of South Florida; State University System of Florida; University of South Florida
摘要：Brick-and-mortar retailers seek higher foot traffic in their stores to improve their sales opportunities. In this quest, location-based advertising on mobile devices has emerged as an important marketing tool for targeting potential customers. The design of such advertising campaigns is complex, and their effectiveness depends on the ability to collect and examine data that aids in targeting the right customers at the right time and place. We develop a campaign design framework that explicitly...
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作者：Li, Chengzhang; Lu, Mengshi
作者单位：Shanghai Jiao Tong University; Purdue University System; Purdue University; Shanghai Jiao Tong University
摘要：We study the problem of jointly optimizing the price and order quantity for a perishable product in a single selling period, also known as the pricing newsvendor problem, under demand ambiguity. Specifically, the demand is a function of the selling price and a random factor of which the distribution is unknown. We employ the minimax regret decision criterion to minimize the worst-case regret, where the regret is defined as the difference between the optimal profit that could be obtained with p...
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作者：Liu, Maoqi; Zheng, Li; Liu, Changchun; Zhang, Zhi-Hai
作者单位：Tsinghua University; National University of Singapore; Tsinghua University
摘要：We study the product design problem where a decision maker selects the features of a product from a set of feasible options. We focus on two widely studied objectives in this field, that is, the share of choice (SOC) and buyers' welfare (BW). The two objectives are vulnerable to different types of customer preference misspecification, that is, deviation from the nominal utility distribution and effects of outliers, respectively. We formulate a distributionally robust optimization (DRO) SOC max...
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作者：Lei, Dazhou; Hu, Hao; Geng, Dongyang; Zhang, Jianshen; Qi, Yongzhi; Liu, Sheng; Shen, Zuo-Jun Max
作者单位：Tsinghua University; University of Toronto; University of California System; University of California Berkeley; University of Hong Kong
摘要：New products are highly valued by manufacturers and retailers due to their vital role in revenue generation. Product life cycle (PLC) curves often vary by their shapes and are complicated by promotional activities that induce spiky and irregular behaviors. We collaborate with JD.com to develop a flexible PLC curve forecasting framework based on Bayesian functional regression that accounts for useful covariate information, including product attributes and promotion. The functional model treats ...
