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11 papers · 1 filter
The consistency of estimator under fixed design regression model with NQD errors
Jian-hua Shi, Xiao-ping Chen, Yong Zhou
In this article, basing on NQD samples, we investigate the fixed design nonparametric regression model, where the errors are pairwise NQD random errors, with fixed design points, a…
Connectedness of graphs and its application to connected matroids through covering-based rough sets
Aiping Huang, William Zhu
Graph theoretical ideas are highly utilized by computer science fields especially data mining. In this field, a data structure can be designed in the form of tree. Covering is a wi…
Dependence space of matroids and its application to attribute reduction
Aiping Huang, William Zhu
Attribute reduction is a basic issue in knowledge representation and data mining. Rough sets provide a theoretical foundation for the issue. Matroids generalized from matrices have…
Connectivity for matroids based on rough sets
Bin Yang, William Zhu
In mathematics and computer science, connectivity is one of the basic concepts of matroid theory: it asks for the minimum number of elements which need to be removed to disconnect…
Applications of repeat degree on coverings of neighborhoods
Hua Yao, William Zhu
In covering based rough sets, the neighborhood of an element is the intersection of all the covering blocks containing the element. All the neighborhoods form a new covering called…
Mining top-k granular association rules for recommendation
Fan Min, William Zhu
Recommender systems are important for e-commerce companies as well as researchers. Recently, granular association rules have been proposed for cold-start recommendation. However, e…