Data compression method by finite exhaustive optimization
A compression method and data technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of inability to compress data, waste of memory storage space, and failure to achieve optimality, so as to eliminate correlation and realize random decompression , the effect of improving the query speed
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[0029] Referring to Fig. 1, the method flow process of the present invention is as follows:
[0030] 1) Determine whether the encoding type of the data to be compressed is Unicode code data or local code data, if it is Unicode code data, perform long-byte code replacement, pre-compress Unicode code data, and eliminate codes with code values less than 0×80 High byte, other codes are sorted by frequency of use, 127 codes with high frequency of use are replaced by code value 0×80-0×FE, and the remaining codes are replaced by 0×ff mark plus two-byte code, and then enter Step 2), if it is local code data, then directly go to step 2);
[0031] 2) judge whether it is dictionary class data, if it is dictionary class data, then record the block mark of this dictionary class data, then proceed to step 3), if not, then directly proceed to step step 3);
[0032] 3) Count the repeated language units within the maximum length range; first count the positions of all the same characters in...
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