Does a "free lunch" really exist? Some online shopping platforms let consumers disclose if they received products for free or at a discount when writing reviews. Although these reviews for free products are not the majority, they can energize online communities where reviews are limited. The lack of objectivity in free product reviews can trigger self-regulation within online communities, prompting more users to provide fair feedback. Voluntary disclosure policies can effectively boost the number of reviews at a lower cost than hiring experts to write positive reviews.
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- PhD in Operations Research, Columbia University
Xiao Lei is an assistant professor at HKU Business School. He received his doctoral degree in Operations Research at Columbia University. His research interests include online marketplaces, revenue management and pricing, and social operations management. His work has been awarded INFORMS Service Science Best Student Paper Award and CSAMSE Best Paper Award. In the summer of 2020, he worked as a data science intern at Activision Blizzard.
- Online marketplaces
- Revenue management and pricing
- Social operations management
- Cohen, Maxime C., Adam N. Elmachtoub, and Xiao Lei. “Price discrimination with fairness constraints.” Management Science (2022).
- Chen, Ningyuan, Adam N. Elmachtoub, Michael L. Hamilton, and Xiao Lei. “Loot box pricing and design.” Management Science 67, no. 8 (2021): 4809-4825.
- Finalist, Chinese Scholars Association for Management Science and Engineering (CSAMSE) Best Paper Award, 2021
- First Place, IBM Best Student Paper Award (INFORMS Service Science), 2019
Does a "free lunch" really exist? Some online shopping platforms let consumers disclose if they received products for free or at a discount when writing reviews. Although these reviews for free products are not the majority, they can energize online communities where reviews are limited. The lack of objectivity in free product reviews can trigger self-regulation within online communities, prompting more users to provide fair feedback. Voluntary disclosure policies can effectively boost the number of reviews at a lower cost than hiring experts to write positive reviews.