使用hadoop开发，可以对输入文件中出现的关键词统计词频并进行不同文本词频统计高低的排序，本代码需要用户自行定义关键词和输入文件-Use hadoop development, can appear in the input file keyword statistics word frequency and low frequency statistics different sort of text, the code requires a user-defined keywords an

对四层二维离散小波进行信息熵计算，通过对比低频子带信息熵的差值求解最佳分层数，希望对大家能有所帮助-For four-dimensional discrete wavelet information entropy calculated by comparing the difference between the low-frequency sub-band information entropy solving optimum number of layers, in the hope th