Study on frequency table of stochastic subsection file in constant grade compression method

The distributing rule of the subsection byte frequency in stochastic file is researched in this paper.The rule is that the most frequencies of 20 k subsection byte distribute in a continuous scale which length is 64.The number of departure nodes is little.This rule can be used to compress a frequency table.Further,01-sign method is used to optimize affixation information and the space of affixation information is reduced.The compression storage of the frequency table and the affixation information is of great significance for the whole realization of constant grade compression technology.