摘要
电网调度中心报警信息中的大量噪声信息不仅加重了调度员的工作量,而且严重影响了事故异常处理的准确性和快速性。为了对报警信息进行噪声滤除,分析了决策树算法中C4.5算法的信息增益率的计算原理和特点,针对其计算量大的特点,对原C4.5算法进行改进,使其在相同准确率的情况下有更高的计算效率。将改进后的C4.5算法应用到报警信息噪声处理中。
A large number of noise information which exists in alarm information of the power grid dispatching center not only increases the dispatcher＇s workload but also seriously affects the accuracy and rapidity of the processing to abnormal accident in power grid.To filter the noise in the alarm information,the principle and feature of the calculation of information gain ratio in C4.5 algorithm are analyzed.Aiming at the problem of calculation,the original C4.5 algorithm is improved so that it has higher calculation efficiency under the condition of the same accuracy.The improved C4.5 algorithm is applied to the alarm information noise processing.
出处
《科学技术与工程》
2011年第30期7375-7378,7385,共5页
Science Technology and Engineering
关键词
决策树
C4.5算法
报警信息
decision tree C4.5 algorithm alarm information
