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math.ST2025
On statistical and causal models associated with acyclic directed mixed graphs
Qingyuan Zhao
Causal models in statistics are often described using acyclic directed mixed graphs (ADMGs), which contain directed and bidirected edges and no directed cycles. This article survey…
stat.ME2025
A Graphical Approach to State Variable Selection in Off-policy Learning
Joakim Blach Andersen, Qingyuan Zhao
Sequential decision problems are widely studied across many areas of science. A key challenge when learning policies from historical data - a practice commonly referred to as off-p…