4 papers
Optimal and Order-optimal Gated Priority-based Greedy Policies for Two-layer Multi-item Order Fulfillment
Xi Chen, Yuze Chen, Ziyi Chen +1
We study how an e-commerce firm should make real-time fulfillment decisions in a two-layer distribution network when multi-item customer orders arrive sequentially and future deman…
Learning in Position-Aware Multinomial Logit Bandits: From Multiplicative to General Position Effects
Xi Chen, Shibo Dai, Jiameng Lyu +1
We study the dynamic joint assortment selection and positioning problem, where the attraction of each product depends on both its intrinsic appeal and its display position under a…
AdaSwitch: An Adaptive Switching Meta-Algorithm for Learning-Augmented Bounded-Influence Problems
Xi Chen, Yuze Chen, Yuan Zhou
We study a class of multi-period online decision-making problems with sequence-based predictions, which may be generated by machine learning models but whose accuracy is not guaran…
It Takes Two: A Peer-Prediction Solution for Blockchain Verifier's Dilemma
Zishuo Zhao, Xi Chen, Yuan Zhou
The security of blockchain systems is fundamentally based on the decentralized consensus in which the majority of parties behave honestly, and the content verification process is e…