Rough set approach to incomplete information systems
Information Sciences: an International Journal
Rough Sets: Theoretical Aspects of Reasoning about Data
Rough Sets: Theoretical Aspects of Reasoning about Data
On the Extension of Rough Sets under Incomplete Information
RSFDGrC '99 Proceedings of the 7th International Workshop on New Directions in Rough Sets, Data Mining, and Granular-Soft Computing
On the Unknown Attribute Values in Learning from Examples
ISMIS '91 Proceedings of the 6th International Symposium on Methodologies for Intelligent Systems
Maximal consistent block technique for rule acquisition in incomplete information systems
Information Sciences: an International Journal
Dominance relation and rules in an incomplete ordered information system
International Journal of Intelligent Systems
Dominance-based rough set approach and knowledge reductions in incomplete ordered information system
Information Sciences: an International Journal
Credible rules in incomplete decision system based on descriptors
Knowledge-Based Systems
Rules and Apriori Algorithm in Non-deterministic Information Systems
Transactions on Rough Sets IX
Attribute reduction and optimal decision rules acquisition for continuous valued information systems
Information Sciences: an International Journal
Dominance-based rough set approach to incomplete interval-valued information system
Data & Knowledge Engineering
Editorial: Introduction to special issues on data mining and granular computing
International Journal of Approximate Reasoning
Approximation reduction in inconsistent incomplete decision tables
Knowledge-Based Systems
Knowledge Operations in Neighborhood System
GRC '10 Proceedings of the 2010 IEEE International Conference on Granular Computing
Set-valued information systems
Information Sciences: an International Journal
Neighborhood systems and approximate retrieval
Information Sciences: an International Journal
Incomplete Multigranulation Rough Set
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Foreword to the Special Section on Granular Computing
IEEE Transactions on Fuzzy Systems
Multi knowledge based rough approximations and applications
Knowledge-Based Systems
Extended rough set-based attribute reduction in inconsistent incomplete decision systems
Information Sciences: an International Journal
On some types of neighborhood-related covering rough sets
International Journal of Approximate Reasoning
Graded rough set model based on two universes and its properties
Knowledge-Based Systems
Relationships among generalized rough sets in six coverings and pure reflexive neighborhood system
Information Sciences: an International Journal
On interval type-2 rough fuzzy sets
Knowledge-Based Systems
Bipolar fuzzy rough set model on two different universes and its application
Knowledge-Based Systems
Evaluation of the decision performance of the decision rule set from an ordered decision table
Knowledge-Based Systems
On the structure of the multigranulation rough set model
Knowledge-Based Systems
Attribute reduction: A dimension incremental strategy
Knowledge-Based Systems
An accelerator for attribute reduction based on perspective of objects and attributes
Knowledge-Based Systems
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Neighborhood system formalized the ancient intuition, infinitesimals, which led to the invention of calculus, topology and non-standard analysis. In this paper, the neighborhood system is researched from the view point of knowledge engineering and then each neighborhood is considered as a basic unit with knowledge. By using these knowledge in neighborhood system, the rough approximations and the corresponding properties are discussed. It is shown that in the incomplete information system, the smaller upper approximations can be obtained by neighborhood system based rough sets than by the methods in [Y. Leung, D.Y. Li, Maximal consistent block technique for rule acquisition in incomplete information systems, Information Sciences 115 (2003) 85-106] and [Y. Leung, W.Z. Wu, W.X. Zhang, Knowledge acquisition in incomplete information systems: a rough set approach, European Journal of Operational Research 168 (2006) 164-180]. Furthermore, a new knowledge operation is discussed in the neighborhood system, from which more knowledge can be derived from the initial neighborhood system. By such operations, the regions of lower and upper approximations are further expanded and narrowed, respectively. Some numerical examples are employed to substantiate the conceptual arguments.