Affiliations: School of Economics and Management Southwest Jiaotong
University Chengdu, 610031, China. E-mail: [email protected] | Laboratory of Intelligent Information Processing
School of Information Science and Technology, Southwest Jiaotong University
Chengdu, 610031, China. E-mail: [email protected] | Belgian Nuclear Research Centre (SCK·CEN),
Boeretang 200, 2400 Mol, Belgium & Department of Applied Mathematics &
Computer Science, Ghent University 9000 Gent, Belgium. E-mail: [email protected];
[email protected] | School of Mathematics, Southwest Jiaotong University
Chengdu, 610031, China. E-mail: [email protected]
Abstract: Knowledge in an information system evolves with its dynamical
environment. A new concept of interesting knowledge based on both accuracy and
coverage is defined in this paper for dynamic information systems. An
incremental model and approach as well as its algorithm for inducing
interesting knowledge are proposed when the object set varies over time. A case
study validates the feasibility of the proposed method.
Keywords: Rough sets, interesting knowledge, accuracy, coverage, dynamic information systems, data mining
