Variable precision rough set model
Journal of Computer and System Sciences
A comparison of similarity measures of fuzzy values
Fuzzy Sets and Systems
Variable precision extension of rough sets
Fundamenta Informaticae - Special issue: rough sets
Approximation of fuzzy concepts in decision making
Fuzzy Sets and Systems
An application of rough set methods in control design
Fundamenta Informaticae - Special issue on Concurrency specification and programming (CS&P)
Intelligent Decision Support: Handbook of Applications and Advances of the Rough Sets Theory
Intelligent Decision Support: Handbook of Applications and Advances of the Rough Sets Theory
A comparative study of fuzzy rough sets
Fuzzy Sets and Systems
Artificial intelligence and security in computing systems
The model of fuzzy variable precision rough sets
IEEE Transactions on Fuzzy Systems
On representation and analysis of crisp and fuzzy information systems
Transactions on rough sets VI
Fuzzy rough set based attribute reduction for information systems with fuzzy decisions
Knowledge-Based Systems
Variable threshold concept lattice and dependence space
FSKD'06 Proceedings of the Third international conference on Fuzzy Systems and Knowledge Discovery
Flow graphs and decision tables with fuzzy attributes
ICAISC'06 Proceedings of the 8th international conference on Artificial Intelligence and Soft Computing
Theory and algorithm based on the general similar relationship between the approximate reduction
ICICA'11 Proceedings of the Second international conference on Information Computing and Applications
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This paper is concerned with describing and analyzing the control actions which are accomplished by a human operator, who controls a complex dynamic system. The decision model is expressed by means of a decision table with fuzzy attributes. Decision tables are generated by the fuzzification of crisp data, basing on a set of fuzzy linguistic values of the attributes. A T-similarity relation is chosen for comparing the elements of the universe. Fuzzy partitions of the universe with respect to condition and decision attributes are generated. The task of stabilization of the aircraft's altitude performed by a pilot is considered as an illustrative example. The limit-based and mean-based variable precision fuzzy rough approximations are determined. The measure of u-approximation quality is used for evaluating the consistency of the human operator's decision model, and assessing the importance of particular condition attributes in the control process.