Title:
METHOD FOR COMPRESSING AND DECOMPRESSING INTEGER COLUMN DATA
Document Type and Number:
Japanese Patent JP3241570
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for compressing and thawing integer column data by which N-dimensional integer vector can be efficiently compressed and the vector satisfying a fixed condition can be taken out by quickly and partially decompressing the vector, regarding the method for compressing and thawing integer column data for compressing/decompressing large quantity of digitized information.
SOLUTION: This method is the method compressing the integer column data shown by an N-dimensional integer vector set T. The set T is converted by a conversion function, the distribution of the values of the i-th component (i is the component number selected in the range of i<N) of the vector belonging to the set T is converged and an N-dimensional integer vector set T' in which the information on the i-th component is added to the j-th component (j is the component number selected in the range of j>i) according to the convergence is made to be formed.
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Inventors:
Kubota Rie
Application Number:
JP18246295A
Publication Date:
December 25, 2001
Filing Date:
July 19, 1995
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
G06F5/00; H03M7/30; (IPC1-7): G06F5/00; H03M7/30
Domestic Patent References:
| JP198025A |
Attorney, Agent or Firm:
Hiroshi Sakaguchi (1 person outside)