A variable-precision information-entropy rough set approach for job searching

摘要

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 analyzes the analog 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 at PyeongTaek. We show how variable precision information-entropy based rough set can be used to group students 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 searching for students. (C) 2014 Elsevier Ltd. All rights reserved.