| 摘要 |
The invention relates o a computer-implemented data compression method comprising:
- providing a dictionary (300) comprising a plurality of data records;
- computing a mean of the lengths of the data records of the dictionary;
- computing a standard deviation of the lengths of the data records of the dictionary;
- determining a deviation threshold indicating a maximum allowable deviation of a data record length from a mean data record length;
- calculating a threshold data record length from the computed mean, from the computed standard deviation and from the determined deviation threshold,
- splitting the dictionary into a minor dictionary (314) and a major dictionary (310), the major dictionary selectively comprising data records whose lengths are below or equal to the calculated threshold data record length, the minor dictionary selectively comprising the ones of the data records whose lengths are larger than the calculated threshold data record length. |
