Decision Analysis System for Job Guidance using Rough Set

러프집합을 통한 취업의사결정 분석시스템

  • Lee, Heui-Tae (Dept. of mechatronics, Pyeongtaek mechanical and technical high school) ;
  • Park, In-Kyoo (Dept. of Computer Science, Joongbu University)
  • 이희태 (평택 기계공업고등학교) ;
  • 박인규 (중부대학교 컴퓨터학과)
  • Received : 2013.08.15
  • Accepted : 2013.10.20
  • Published : 2013.10.28


Data mining is the process of discovering hidden, non-trivial patterns in large amounts of data records in order to be used very effectively for analysis and forecasting. Because hundreds of variables give rise to a high level of redundancy and dimensionality with time complexity, they are more likely to have spurious relationships, and even the weakest relationships will be highly significant by any statistical test. Hence cluster analysis is a main task of data mining and is the task of grouping a set of objects in such a way that objects in the same group are more similar to each other than to those in other groups. In this paper system implementation is of great significance, which defines a new definition based on information-theoretic entropy and analyse the analogue behaviors of objects at hand so as to address the measurement of uncertainties in the classification of categorical data. The sources were taken from a survey aimed to identify of job guidance from students in high school pyeongtaek. we show how variable precision information-entropy based rough set can be used to group student in each section. It is proved that the proposed method has the more exact classification than the conventional in attributes more than 10 and that is more effective in job guidance for students.


Data Mining;Cluster Analysis;Uncertainty;Entropy;Rough Set