I am a Ph.D. candidate in Computer Science and Engineering at The Ohio State University (OSU). I’m fortunately working with Prof. Ping Zhang in AIMed (Artificial Intelligence in Medicine) Lab. My research lies at the intersection of deep learning and causal inference, with applications in healthcare and biomedicine. I am particularly interested in estimating treatment effects to derive evidence-based, actionable healthcare decisions using real-world patient data.
*: Equal Contributions
Teach multimodal LLMs to comprehend electrocardiographic images
Ruoqi Liu*, Yuelin Bai*, Xiang Yue, Ping Zhang
arXiv 2024
[Project Page][arXiv][Code][HF Data]
Treatment effect estimation with multiple treatments and multiple outcomes for antihypertensive drug combinations
Ruoqi Liu, Lang Li, Ping Zhang
Cell Reports Medicine, 2025 (Impact factor: 11.7)
[medRxiv]
A deep subgrouping framework for precision drug repurposing via emulating clinical trials on real-world patient data
Seungyeon Lee, Ruoqi Liu, Feixiong Cheng, Ping Zhang
ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2025 (Acceptance rate: 62/285 = 22%, applied data science track)
CURE: A deep learning framework pre-trained on large-scale patient data for treatment effect estimation
Ruoqi Liu, Pin-Yu Chen, Ping Zhang
Patterns, 2024
[Paper] [Code]
Selected media coverage: OHIO STATE NEWS, Clinical Research News, MedicalXpress, AZoRobotics
KG-TREAT: Pre-training for treatment effect estimation by synergizing patient data with knowledge graphs
Ruoqi Liu, Lingfei Wu, Ping Zhang
AAAI Conference on Artificial Intelligence (AAAI), 2024 (Acceptance rate: 2342/9862 = 23.7%, main track, oral presentation)
[Paper][Code]
Estimating treatment effects for time-to-treatment antibiotic stewardship in sepsis
Ruoqi Liu, Katherine Hunold, Jeffrey Caterino, Ping Zhang
Nature Machine Intelligence, 2023 (Impact factor: 25.898)
[Paper] [Code]
Selected media coverage: OHIO STATE NEWS, HealthITAnalytics, MIT Technology Review Chinese Edition. Featured on AMIA 2024 Informatics Summit Artificial Intelligence and Data Science Year-in-Review
Deconfounding actor-critic network with policy adaptation for dynamic treatment regimes
Changchang Yin, Ruoqi Liu, Jeffrey Caterino, Ping Zhang
ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2022 (Acceptance rate: 254/1695 = 15.0%, research track)
[Paper]
A deep learning framework for drug repurposing via emulating clinical trials on real world patient data
Ruoqi Liu, Lai Wei, Ping Zhang
Nature Machine Intelligence 3:68–75, 2021 (Impact factor: 25.898)
[Paper] [Code]
Selected media coverage: IN BRIEF of Nature Reviews Drug Discovery, Headline of OHIO STATE NEWS, Top 5% of all research ouputs scores by Altmetric
Estimating individual treatment effects with time-varying confounders
Ruoqi Liu, Changchang Yin, Ping Zhang
IEEE International Conference on Data Mining (ICDM), 2020 (Acceptance rate: 91/930 = 9.8%, regular paper, oral presentation)
[Paper] [Code]
Identifying sepsis subphenotypes via time-aware multi-modal auto-encoder
Changchang Yin, Ruoqi Liu, Dongdong Zhang, Ping Zhang
ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2020 (Acceptance rate: 216/1279 = 16.9%, research track, oral presentation)
[Paper] [Code] [Video]
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