no code implementations • 4 Aug 2022 • Ziheng Chen, Fabrizio Silvestri, Jia Wang, Yongfeng Zhang, Zhenhua Huang, Hongshik Ahn, Gabriele Tolomei
Although powerful, it is very difficult for a GNN-based recommender system to attach tangible explanations of why a specific item ends up in the list of suggestions for a given user.
1 code implementation • 22 Oct 2021 • Ziheng Chen, Fabrizio Silvestri, Jia Wang, He Zhu, Hongshik Ahn, Gabriele Tolomei
However, existing CF generation methods either exploit the internals of specific models or depend on each sample's neighborhood, thus they are hard to generalize for complex models and inefficient for large datasets.
no code implementations • 14 Feb 2021 • Ziheng Chen, Jin Huang, Hongshik Ahn, Xin Ning
We consider the problem of costly feature classification, where we sequentially select the subset of features to make a balance between the classification error and the feature cost.
no code implementations • 11 Nov 2019 • Ziheng Chen, Hongshik Ahn
In this article, we propose a novel probabilistic framework to improve the accuracy of a weighted majority voting algorithm.