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Zifeng Zhao

4 accepted papers

2025

Learning Personalized Ad Impact via Contextual Reinforcement Learning under Delayed Rewards

NeurIPS 2025poster

Online advertising platforms use automated auctions to connect advertisers with potential customers, requiring effective bidding strategies to maximize profits. Accurate ad impact estimation requires considering three key factors: delayed and long-term effects, cumulative ad impacts such as reinforc…

Cited by 0SourceScholar
2025

SciAssess: Benchmarking LLM Proficiency in Scientific Literature Analysis

NAACL 2025findings

Recent breakthroughs in Large Language Models (LLMs) have revolutionized scientific literature analysis. However, existing benchmarks fail to adequately evaluate the proficiency of LLMs in this domain, particularly in scenarios requiring higher-level abilities beyond mere memorization and the handli…

2022

Change-point Detection for Sparse and Dense Functional Data in General Dimensions

NeurIPS 2022accept

We study the problem of change-point detection and localisation for functional data sequentially observed on a general $d$-dimensional space, where we allow the functional curves to be either sparsely or densely sampled. Data of this form naturally arise in a wide range of applications such as biolo…