4 papers
Hybrid Strangeon Stars
Chen Zhang, Yong Gao, Cheng-Jun Xia +1
It was conjectured that the basic units of the ground state of bulk strong matter may be strange-clusters called strangeons, and they can form self-bound strangeon stars that are h…
Do We Fully Understand Students' Knowledge States? Identifying and Mitigating Answer Bias in Knowledge Tracing
Chaoran Cui, Hebo Ma, Chen Zhang +4
Knowledge tracing (KT) aims to monitor students' evolving knowledge states through their learning interactions with concept-related questions, and can be indirectly evaluated by pr…
Reducing Uncertainty of Schema Matching via Crowdsourcing with Accuracy Rates
Chen Jason Zhang, Lei Chen, H. V. Jagadish +2
Schema matching is a central challenge for data integration systems. Inspired by the popularity and the success of crowdsourcing platforms, we explore the use of crowdsourcing to r…
CrowdFusion: A Crowdsourced Approach on Data Fusion Refinement
Yunfan Chen, Lei Chen, Chen Jason Zhang
Data fusion has played an important role in data mining because high-quality data is required in a lot of applications. As on-line data may be out-of-date and errors in the data ma…