earticle

영어

Recently network data domain knowledge updates quickly, but with the growth of the large amount of information, the stability of the information itself decreases dramatically. So, one of the key research directions is that how to dig out the valuable information from the unstable and chaotic huge information. The research on rules getting incomplete information is helpful for getting more useful information. When the incomplete information turns into complete, it will cause a certain degree of information distortion. For this problem, the paper proposes the decomposition method of incomplete information system. This method, without completion process of incomplete information, selects a template through a template function. The template function is based on the rough set theory, and when ensuring the template, it can extract subset from incomplete information through decreasing step by step. Incomplete information system need to use an intermediate variable based on rough set theory when it is broken down by simplified rule sets.