Li Zhu

Low-Rank and Sparse Matrix Factorization for Scientific Paper Recommendation in Heterogeneous Network

2018 · IEEE Access

With the rapid growth of scientific publications, it is hard for researchers to acquire appropriate papers that meet their expectations. Recommendation system for scientific articles is an essential technology to overcome this problem. In this …

Bayesian two-part spatial models for semicontinuous data with application to emergency department expenditures

2015 · Biostatistics

In health services research, it is common to encounter semicontinuous data characterized by a point mass at zero and a continuous distribution of positive values. Examples include medical expenditures, in which the zeros represent patients …