7 citations · 10 across the 5 of their papers we have counts for
5 papers
Total Variation Regularization for Compartmental Epidemic Models with Time-Varying Dynamics
Wenjie Zheng
Compartmental epidemic models are among the most popular ones in epidemiology. For the parameters (e.g., the transmission rate) characterizing these models, the majority of researc…
-Block Cross Validation is not a BIBD: a Note on the Paper by Jeff Racine (2000)
Wenjie Zheng
This note corrects a mistake in the paper "consistent cross-validatory model-selection for dependent data: -block cross-validation" by Racine (2000). In his paper, he implied t…
Matrix Factorization Method for Decentralized Recommender Systems
Wenjie Zheng
Decentralized recommender system does not rely on the central service provider, and the users can keep the ownership of their ratings. This article brings the theoretically well-st…
Two Differentially Private Rating Collection Mechanisms for Recommender Systems
Wenjie Zheng
We design two mechanisms for the recommender system to collect user ratings. One is modified Laplace mechanism, and the other is randomized response mechanism. We prove that they a…
Toward a Better Understanding of Leaderboard
Wenjie Zheng
The leaderboard in machine learning competitions is a tool to show the performance of various participants and to compare them. However, the leaderboard quickly becomes no longer a…