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cs.LG2025
Learning Granger Causality under Latent Confounding via Intervention-Induced Heterogeneity
Ziyi Zhang, Shaogang Ren, Xiaoning Qian +1
Granger causality characterizes directed predictive dependencies in multivariate time series, but recovering such dependencies becomes challenging in the presence of latent confoun…
cs.AI2025
LLM Based Bayesian Optimization for Prompt Search
Adam Ballew, Jingbo Wang, Shaogang Ren
Bayesian Optimization (BO) has been widely used to efficiently optimize expensive black-box functions with limited evaluations. In this paper, we investigate the use of BO for prom…
cs.LG2025
MuST2-Learn: Multi-view Spatial-Temporal-Type Learning for Heterogeneous Municipal Service Time Estimation
Nadia Asif, Zhiqing Hong, Shaogang Ren +3
Non-emergency municipal services such as city 311 systems have been widely implemented across cities in Canada and the United States to enhance residents' quality of life. These sy…