89 citations · 455 across the 65 of their papers we have counts for
5 papers · 2 filters
Hyperbolic Network Latent Space Model with Learnable Curvature
Jinming Li, Gongjun Xu, Ji Zhu
Network data is ubiquitous in various scientific disciplines, including sociology, economics, and neuroscience. Latent space models are often employed in network data analysis, but…
A Note on Improving Variational Estimation for Multidimensional Item Response Theory
Chenchen Ma, Jing Ouyang, Chun Wang +1
Survey instruments and assessments are frequently used in many domains of social science. When the constructs that these assessments try to measure become multifaceted, multidimens…
Adaptive Bootstrap Tests for Composite Null Hypotheses in the Mediation Pathway Analysis
He Yinqiu, Song Peter X. -K., Xu Gongjun
Mediation analysis aims to assess if, and how, a certain exposure influences an outcome of interest through intermediate variables. This problem has recently gained a surge of atte…
Sufficient and Necessary Conditions for the Identifiability of DINA Models with Polytomous Responses
Mengqi Lin, Gongjun Xu
Cognitive Diagnosis Models (CDMs) provide a powerful statistical and psychometric tool for researchers and practitioners to learn fine-grained diagnostic information about responde…
Incorporating External Risk Information with the Cox Model under Population Heterogeneity: Applications to Trans-Ancestry Polygenic Hazard Scores
Di Wang, Wen Ye, Ji Zhu +5
Polygenic hazard score (PHS) models designed for European ancestry (EUR) individuals provide ample information regarding survival risk discrimination. Incorporating such informatio…