58 citations · 61 across the 8 of their papers we have counts for
5 papers · 1 filter
Incremental approaches to updating attribute reducts when refining and coarsening coverings
Mingjie Cai, Guangming Lang
In a dynamic environment, knowledge reduction of information systems with variations of object sets, attribute sets and attribute values is an important topic of rough set theory,…
Related families-based attribute reduction of dynamic covering information systems with variations of object sets
Guangming Lang
In practice, there are many dynamic covering decision information systems, and knowledge reduction of dynamic covering decision information systems is a significant challenge of co…
Comments on "Characteristic matrix of covering and its application to Boolean matrix decomposition[Information Sciences 263(1), 186-197, 2014]"
Guangming Lang
In this note, we show some improvements for Theorem 7 and Example 8 in Shiping Wang[Information Sciences 263(1), 186-197, 2014]. Concretely, we study further the sixth lower and up…
Decision-theoretic rough sets based on time-dependent loss function
Guangming Lang
A fundamental notion of decision-theoretic rough sets is the concept of loss functions, which provides a powerful tool of calculating a pair of thresholds for making a decision wit…
Data compression of dynamic set-valued information systems
Guangming Lang, Qingguo Li
This paper further investigates the set-valued information system. First, we bring forward three tolerance relations for set-valued information systems and explore their basic prop…