TZStats aiX Lab | Tian Zheng, Columbia Stats
TZStats aiX Lab | Tian Zheng, Columbia Stats
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ForkSCOPE: Charting the Agentic Garden of Forking Paths
Even with a fixed dataset and research question, data analysis involves many defensible decisions. Understanding how these choices …
Arjun Balaji
,
Batuhan Duru Yeltekin
,
Tian Zheng
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DOI
arXiv
GitHub (TZstats-Columbia)
Probing the Stochastic Machine: Engaging with LLMs in Statistics Curricula Through Veridical Data Science
Large language models (LLMs) are interactive stochastic systems whose most consequential behaviors are still only partially understood. …
Tian Zheng
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DOI
arXiv
Grading the Grader: Lessons from Evaluating an Agentic Data Analysis System
Agentic data analysis systems produce rich outputs, including code, numerical results, and verbal diagnostics. This makes them more …
Tian Zheng
,
Carter K. T. Hsu
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DOI
arXiv
GitHub (TZstats-Columbia)
Target-Aware Linear Regression Under Distribution Shift
Distribution shift between training and deployment is a pervasive challenge for modern AI systems. In many cases, the target marginals …
Zhewen Hou
,
Tian Zheng
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DOI
arXiv
GitHub (TZstats-Columbia)
Calibrating Geophysical Predictions under Constrained Probabilistic Distributions
Zhewen Hou
,
Jiajin Sun
,
Subashree Venkatasubramanian
,
Peter Jin
,
Shawn Li
,
Tian Zheng
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Code
DOI
arXiv
GitHub (TZstats-Columbia)
Power Ensemble Aggregation for Improved Extreme Event AI Prediction
This paper addresses the critical challenge of improving predictions of climate extreme events, specifically heat waves, using machine …
Julien Collard
,
Pierre Gentine
,
Tian Zheng
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DOI
arXiv
AI Education in Higher Education: A Taxonomy for Curriculum Reform and the Mission of Knowledge
Artificial intelligence (AI) is reshaping higher education, yet current debates often feel tangled, mixing concerns about pedagogy, …
Tian Zheng
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DOI
arXiv
Graph-Enabled Efficient Federated Bayesian Modeling
Federated Bayesian modeling requires combining evidence across distributed data holders while preserving posterior uncertainty and …
Chenyang Zhong
,
Shouxuan Ji
,
Tian Zheng
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DOI
arXiv
Phase-Aligned Spectral Filtering for Decomposing Spatiotemporal Dynamics
Spatiotemporal dynamics is central to a wide range of applications from climatology, computer vision to neural sciences. From temporal …
Lu Meng
,
Tian Zheng
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DOI
arXiv
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