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stat.ME2026
COSTA: Covariance-Optimized Design and Causal Inference under Network-Temporal Interference
Qianyi Chen, Bo Li, Yongli Qin +1
Experiments on networks observed over time face network spillovers, temporal carryover, and dependence deliberately introduced by the design. We propose COSTA---Covariance-Optimize…
stat.ME2025
Bridging Control Variates and Regression Adjustment in A/B Testing: From Design-Based to Model-Based Frameworks
Yu Zhang, Bokui Wan, Yongli Qin
A B testing serves as the gold standard for large scale, data driven decision making in online businesses. To mitigate metric variability and enhance testing sensitivity, control v…