改进的基于内容的文件类型识别算法

在现有基于内容的文件类型识别算法基础上,针对统计特征提取方面存在的问题,采用定长和变长窗口对文件二进制内容进行划分,提取文件的统计特征,并提出将特征选择应用于文件类型识别,结合特征的广度和稳定度设计出一种特征选择评估函数选择标志特征,从而建立文件类型模型,以此为标准识别文件类型.该算法不依靠特定文件类型的结构和关键标识...

Improved of content-based file type identification algorithm

On the basis of the content-based file type identification algorithm,both fixed and variable size window are adopted to extract statistic characteristic of files' binary content,which improves feature extraction in current algorithm.Feature selection is introduced into file type identification and a novel evaluation function combing feature width and stability is used for feature selection,which are used to establish models for different file types as standard to determine a tested file type.Our aim is not ...