Seismic attribute reduction based on covering rough set and its applications
Liu Hong-jie1,4, Lou Bing1, Liu Tao-ping2, Wei Jian-jie3
1. Geophysical Research Institute,Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Urumqi, Xinjiang 830013, China;
2. College of Mechanical and Electrical Engineering,Central South University, Changsha, Hunan 410012, China;
3. School of Electronics and Information Engineering,Xi'an Jiaotong University,Xi'an, Shaanxi 710049, China
Abstract：In oil gas prediction,it is not always true that the more the index variables of seismic attribute data are,the better effect of prediction is.On the contrary,the classification accuracy will reduce by the redundant index variables because of the calculation error.Nowadays,rough set is mostly applied to optimize seismic attributes in the seismic attribute reduction.However,it is difficult to achieve the equivalence relation in some cases,and the process of discretizing continuous attributes can lead to the distortion of the original data.Therefore,the seismic attribute reduction based on the covering rough set is presented in this paper.This approach not only solves problems mentioned above,but also overcomes limits in rough set application,and makes the rough set theory more generalized.The simulation and actual experiments reveal that the results of the seismic attribute reduction application can improve oil gas prediction precision.
刘宏杰, 娄兵, 刘涛平, 魏建杰. 基于覆盖粗糙集的地震属性约简及其应用[J]. 石油地球物理勘探, 2012, 47(5): 740-746.
Liu Hong-jie, Lou Bing, Liu Tao-ping, Wei Jian-jie. Seismic attribute reduction based on covering rough set and its applications. OGP, 2012, 47(5): 740-746.
