3 papers
econ.GN2025
Attention vs Choice in Welfare Take-Up: What Works for WIC?
Lei Bill Wang, Sooa Ahn
Incomplete take-up of welfare benefits remains a major policy puzzle. This paper decomposes the causes of incomplete welfare take-up into two mechanisms: inattention, where househo…
stat.ML2025
Policy-Oriented Binary Classification: Improving (KD-)CART Final Splits for Subpopulation Targeting
Lei Bill Wang, Zhenbang Jiao, Fangyi Wang
Policymakers often use recursive binary split rules to partition populations based on binary outcomes and target subpopulations whose probability of the binary event exceeds a thre…
econ.GN2025
Balancing Efficiency and Equity in Classroom Assignment under Endogenous Peer Effects
Lei Bill Wang, Zhenbang Jiao, Om Prakash Bedant +1
This paper presents a three-step empirical framework for optimizing classroom assignments under endogenous peer effects, using data from the China Education Panel Survey (CEPS). We…