The Weighting Analysis of Influence Factors in Gas Breakdown via Rough Set and GM(h,N)

Abstract

<p class="MsoNormal" style="text-align: left; margin: 0cm 0cm 0pt; layout-grid-mode: char;" align="left"><span class="text"><span style="font-family: ";Arial";,";sans-serif";; font-size: 9pt;">In power system filed, to study the characteristics of the gas breakdown is essential and of importance in designing the protection of high voltage system as well as to the power system reliability. Hence, in this paper, the major purpose is to propose a refined mathematical approach based on core finding in rough set method and GM(h,N) method in grey system theory to find the priority of influence factor in gas breakdown. And also created rough set and GM(h,N) toolbox based on Matlab, which to help the complex calculation and analysis. As the result, we not only can get the rank of influence factor in gas breakdown, but also provides a new idea for extension the applications of rough set and GM(h,N) method.</span></span><span style="font-family: ";Arial";,";sans-serif";; font-size: 9pt;"></span></p&gt

The Weighting Analysis of Influence Factor in Clinical Skin Physiology Assessment via Rough Set Method

“…The value is the level of attribute significant that will affect the weighting of factor outcomes as shown in Table 3. Because of the amount of data are enormous, therefore, the computer toolbox is also used to analyze and verify [8], as shown in Figure 3. …”

Establishing Effective Remedial Instruction Grouping Using the Rough Set Theory and Grey Structural Modeling

“…Because the starting point of problem solving using rough set theory is the indistinguishability of knowledge in information systems, the focus is on the roughness of a set [23][24][25]. Accordingly, rough set theory defines the set of equivalence classes of various equivalence relations as the rough set (also called the upper and lower approximation sets of a certain set of objects), and the main computational output is the expression and simplification of knowledge [21][22][23][24][25]. According to this description, we see that the object of study by rough sets is quite simple.…”

“…In Figure 1, the object of study by rough sets is represented in the simplest graphical manner. The mathematical model of the rough set used in this study consists of the following [23][24][25].…”

“…To use rough sets to analyze them, they must be transformed into discrete forms. Therefore, discretization of continuous attributes is the main premise of using rough sets [23][24][25].…”

Crop Evaluation System Optimization: Attribute Weights Determination Based on Rough Sets Theory

“…First, objective weight value is derived by significance in the theory of rough sets [23][24][25][26][27]. And then, according to practical application background, we combine objective weight with subjective weight determined by expert experience knowledge and ascertain the final weight value so as to realize reasonable unification of subjective prior knowledge and objective situation.…”