HKUBS_Standard_Coloured_Shield_Blue_Text_Logo - 380
  • Global Presence
  • About Us
        • About us about us
        • A Premier Business School in Asia with Global Influence
        • Overview
          • Message from the Dean
          • Vision & Mission
          • Milestones
          • Partnerships & Global Network
          • Beta Gamma Sigma HKU Chapter
          • Rankings & Accreditations
          • Corporate Collaboration
        • Leadership
          • Faculty Management
          • International Advisory Council
        • Our Stories
        • Contact Us
        • Staff Portal
        • Campuses
  • Programmes
        • Programmes programmes
        • Diversified Learning Experience Empowers our Students
        • Undergraduate
        • Masters
          • MAA
          • MAcct
          • MCGRM
          • MEcon
          • MFWM
          • MFin
          • MFFinTech
          • MGM
          • MSAF
          • MSc(BA)
          • MScMktg
          • MWM
        • MBAs & EMBAs
          • MBA
          • IMBA
          • HKU EMBA
        • PhD
        • Executive Education
        • DBA
  • People
        • People people
        • International Faculty Body that Offers Quality Education
        • Faculty
        • Post-Doctoral Fellows
        • Demonstrators/ Teaching Assistants
        • Research Postgraduate Students
        • Administration
  • Research
        • Research research
        • Lead the Frontier of Knowledge Creation
        • Thought Leadership
          • Latest Research Publications
          • HKEJ Column
          • FT Chinese Column
          • In the Media
        • Academic Areas
        • Faculty Members
        • Research Grants
        • Seminars & Conferences
          • Edward K Y Chen Distinguished Lecture Series
        • Research Centres & Institutes
        • Hong Kong Macroeconomics Forecast
        • HKU Knowledge Exchange
        • HKU Scholars Hub
        • Shenzhen Research Institutes
  • Events
  • Media
        • Media media
        • Inspire the Society and Community with Rigorous Insights
        • School News
        • In the Media
        • Press Release
  • Career
        • Career career
        • Fostering Strategic Partnerships and Talent Development
        • Recruit our Talents
        • Student Career Development
        • Career Opportunities
          • Faculty Recruitments
          • HKU Career Site
  • 繁
  • 简
Type To Search
HKUBS_Standard_Coloured_Shield_Blue_Text_Logo - 380
Type To Search
  • Global Presence
  • About Us
        • About us about us
        • A Premier Business School in Asia with Global Influence
        • Overview
          • Message from the Dean
          • Vision & Mission
          • Milestones
          • Partnerships & Global Network
          • Beta Gamma Sigma HKU Chapter
          • Rankings & Accreditations
          • Corporate Collaboration
        • Leadership
          • Faculty Management
          • International Advisory Council
        • Our Stories
        • Contact Us
        • Staff Portal
        • Campuses
  • Programmes
        • Programmes programmes
        • Diversified Learning Experience Empowers our Students
        • Undergraduate
        • Masters
          • MAA
          • MAcct
          • MCGRM
          • MEcon
          • MFWM
          • MFin
          • MFFinTech
          • MGM
          • MSAF
          • MSc(BA)
          • MScMktg
          • MWM
        • MBAs & EMBAs
          • MBA
          • IMBA
          • HKU EMBA
        • PhD
        • Executive Education
        • DBA
  • People
        • People people
        • International Faculty Body that Offers Quality Education
        • Faculty
        • Post-Doctoral Fellows
        • Demonstrators/ Teaching Assistants
        • Research Postgraduate Students
        • Administration
  • Research
        • Research research
        • Lead the Frontier of Knowledge Creation
        • Thought Leadership
          • Latest Research Publications
          • HKEJ Column
          • FT Chinese Column
          • In the Media
        • Academic Areas
        • Faculty Members
        • Research Grants
        • Seminars & Conferences
          • Edward K Y Chen Distinguished Lecture Series
        • Research Centres & Institutes
        • Hong Kong Macroeconomics Forecast
        • HKU Knowledge Exchange
        • HKU Scholars Hub
        • Shenzhen Research Institutes
  • Events
  • Media
        • Media media
        • Inspire the Society and Community with Rigorous Insights
        • School News
        • In the Media
        • Press Release
  • Career
        • Career career
        • Fostering Strategic Partnerships and Talent Development
        • Recruit our Talents
        • Student Career Development
        • Career Opportunities
          • Faculty Recruitments
          • HKU Career Site
HKUBS_Standard_Coloured_Shield_Blue_Text_Logo - 380
  • Global Presence
  • About Us
    • Overview
      • Message from the Dean
      • Vision & Mission
      • Milestones
      • Partnerships & Global Network
      • Beta Gamma Sigma HKU Chapter
      • Rankings & Accreditations
      • Corporate Collaboration
    • Leadership
      • Faculty Management
      • International Advisory Council
    • Our Stories
    • Contact Us
    • Staff Portal
    • Campuses
  • Programmes
    • Undergraduate
    • Masters
      • MAA
      • MAcct
      • MCGRM
      • MEcon
      • MFWM
      • MFin
      • MFFinTech
      • MGM
      • MSAF
      • MSc(BA)
      • MScMktg
      • MWM
    • MBAs & EMBAs
      • MBA
      • IMBA
      • HKU EMBA
    • DBA
    • PhD
    • Executive Education
  • People
    • Faculty
    • Post-Doctoral Fellows
    • Demonstrators/ Teaching Assistants
    • Research Postgraduate Students
    • Administration
  • Research
    • Thought Leadership
      • Latest Research Publications
      • HKEJ Column
      • FT Chinese Column
      • In the Media
    • Academic Areas
    • Faculty Members
    • Research Grants
    • Seminars & Conferences
      • Edward K Y Chen Distinguished Lecture Series
    • Research Centres & Institutes
    • Hong Kong Macroeconomics Forecast
    • HKU Knowledge Exchange
    • HKU Scholars Hub
    • Shenzhen Research Institutes
  • Events
  • Media
    • School News
    • In the Media
    • Press Release
  • Career
    • Recruit our Talents
    • Student Career Development
    • Career Opportunities
      • Faculty Recruitments
      • HKU Career Site

Events

Home Events
Temporal Fairness in Learning and Earning: Price Protection Guarantee and Phase Transitions
Temporal Fairness in Learning and Earning: Price Protection Guarantee and Phase Transitions
Temporal Fairness in Learning and Earning: Price Protection Guarantee and Phase Transitions
Temporal Fairness in Learning and Earning: Price Protection Guarantee and Phase Transitions
25Jul
Seminar Calendar, Information and Innovation Management

Temporal Fairness in Learning and Earning: Price Protection Guarantee and Phase Transitions

25 July 2024 | 2:30 p.m.— 4:00 p.m.
KK 315, K. K. Leung Building, HKU
Share on TwitterShare on FacebookShare on WhatsappShare on LinkedInShare on Email
SPEAKER

Prof. Ruihao Zhu
Assistant Professor of Operations, Technology, and Information Management
Cornell SC Johnson College of Business &
Nolan School of Hotel Administration

ABSTRACT

Motivated by the prevalence of “price protection guarantee”, which helps to promote temporal fairness in dynamic pricing, we study the impact of such policy on the design of online learning algorithm for data-driven dynamic pricing with initially unknown customer demand. Under the price protection guarantee, a customer who purchased a product in the past can receive a refund from the seller during the so-called price protection period (typically defined as a certain time window after the purchase date) in case the seller decides to lower the price. We consider a setting where a firm sells a product over a fixed time horizon and characterize how the length of price protection period can affect the optimal regret of the learning process. We first establish a fundamental impossible regime with a novel refund-aware regret lower bound analysis. Then, we propose LEAP, a phased exploration type algorithm for Learning and EArning under Price Protection to match this lower bound up to logarithmic factors or even doubly logarithmic factors (when there are only two prices available to the seller). Our results reveal the surprising phase transitions of the optimal regret with respect to the length of price protection period. Specifically, when this length is not too large, the optimal regret has no major difference when compared to that of the classic setting with no price protection guarantee. Moreover, there exists an upper limit on how much the optimal regret can deteriorate when this length of price protection period grows large. Finally, we conduct extensive numerical simulations with both synthetic and real-world datasets to show the benefit of LEAP over other heuristic methods for this problem.

BIOGRAPHY

Ruihao Zhu is currently an Assistant Professor at the Cornell University SC Johnson College of Business. He works on using machine learning and optimization to inform decision-making under uncertainty with applications in online platforms, revenue management, healthcare, and supply chain. Previously, he received his PhD degree from MIT and his bachelor degrees from the Shanghai Jiao Tong University and the University of Michigan.

Machine Learning for Causal Inference: Is a Nonlinear First Stage Really Forbidden in 2SLS?24 July 2024
HKU Business School Alumni Get-Together31 Jul 2024
Other Events
214th Congregation (Summer Congregation 2025)
7Jul-8Jul
Faculty Level | Event
214th Congregation (Summer Congregation 2025)
Grand Hall, Centennial Campus, HKU
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
18Jun
Economics | Seminar
Semiparametric Identification of the Discount Factor and Payoff Function in Dynamic Discrete Choice Models
18 June 2025 | 2:15 PM - 3:30 PM
KK 910 K. K. Leung Building, HKU
Prof. Katsumi Shimotsu
Temporal Fairness in Learning and Earning: Price Protection Guarantee and Phase Transitions
About Speaker
Prof. Ruihao Zhu

Assistant Professor of Operations, Technology, and Information Management | Cornell SC Johnson College of Business & Nolan School of Hotel Administration

Temporal Fairness in Learning and Earning: Price Protection Guarantee and Phase Transitions
25 July 20242:30 p.m.— 4:00 p.m.
KK 315, K. K. Leung Building, HKU
Sign up for upcoming news and events
LinkedIn WeChat Instagram Facebook Weibo Twitter YouTube

©2025, HKU Business School. All Rights Reserved. | Privacy Policy | Web Accessibility Statement