2025/05/22 by Zhang, Yi, Chen, Elynn, Yan, Yujun
#Applications (stat.AP) #FOS: Computer and information sciences #Machine Learning (cs.LG) #Methodology (stat.ME)
paper · doi:10.48550/arxiv.2505.17203
We study contextual dynamic pricing when a target market can leverage K auxiliary markets -- offline logs or concurrent streams -- whose mean utilities differ by a structured preference shift. We propose Cross-Market Transfer Dynamic Pricing (CM-TDP), the first algorithm that provably handles such model-shift transfer and delivers minimax-optimal regret for both linear and non-parametric utility models. For linear utilities of dimension d, where the difference between source- and target-task coefficients is s0-sparse, CM-TDP attains regret O((d*K-1+s0)log T). For nonlinear demand residing in a reproducing kernel Hilbert space with effective dimension α, complexity β and task-similarity parameter H, the regret becomes O (K-2αβ/(2αβ+1)T1/(2αβ+1) + H2/(2α+1)T1/(2α+1)), matching information-theoretic lower bounds up to logarithmic factors. The RKHS bound is the first of its kind for transfer pricing and is of independent interest. Extensive simulations show up to 50% lower cumulative regret and 5 times faster learning relative to single-market pricing baselines. By bridging transfer learning, robust aggregation, and revenue optimization, CM-TDP moves toward pricing systems that transfer faster, price smarter.