Inspired by another picture, I tried to amplify the feeling of isolation for the viewer of the image, by putting him in a rather gloomy room, watching the scene from behind grimy Windows.
Based on conditional information quantity, a heuristic algorithm for assignment reduction is presented, and the complexity of this algorithm is analyzed.
The paper offer a new heuristic attribute reduction algorithm based on conditional granularity entropy, though running an example, we show that this algorithm is effective.
Our research is of instructive significance not only to performance auditing of the government student loans, but also to performance auditing of other policy loans.