Abstract: A processor obtains a table that contains numerical values or character strings in its cells. The processor then replaces each numerical value with a first constant value, and each character string with a second constant value. The two constant values have opposite signs. The processor generates area datasets each including first to third rectangular areas. The right side of the second rectangular area coincides with the left side of the first rectangular area. The bottom side of the third rectangular area coincides with the top side of the first rectangular area. With respect to each generated area dataset, the processor compares a sum of first and second constant values in the first rectangular area with a sum of first and second constant values in the second and third rectangular areas. The processor outputs at least one of the area datasets according to the comparison result.

Abstract: A data processing method executed by a computer, the data processing method including specifying a first region range among from a data table, a first region range including a plurality of numerical value regions which are continuously disposed in a first direction, a plurality of numerical values in the plurality of numerical value regions having a relationship with a specified numerical value in an adjacent region, specifying a second region range, the second region range being specified by shifting the first region range in a second direction, the second region range including at least one character string region and at least one blank region, associating a character string in the at least one character string region and the plurality of numerical values, and outputting data that indicates an association between the character string in the at least one character string region and the plurality of numerical values.

Abstract: A data processing apparatus includes a processor. The processor selects candidate tables corresponding to a first table. The respective candidate tables include a first data item included in the first table. The processor acquires a first coincidence degree of the first table for the respective candidate tables. The processor selects third tables corresponding to one of the candidate tables. The respective third tables include a second data item included in the one of the candidate tables. The processor acquires a second coincidence degree of the one of the candidate tables for the respective third tables. The processor acquires a reliability of the one of the candidate tables on basis of the first coincidence degree of the first table for the one of the candidate tables and the second coincidence degree of the one of the candidate tables for the respective third tables.

Abstract: An evaluation method which is executed by a processor, the method includes: comparing values of cells between a plurality of pieces of data each including a plurality of cells divided by a plurality of columns and a plurality of records; storing, in a storage unit, information that indicates a plurality of cell sets that have been detected as sets of cells including similar character strings by the comparing; and setting, with reference to the storage unit, a score of each of a plurality of column sets formed by making each of columns of one of the plurality of pieces of data and each of columns of another one of the plurality of pieces of data as a set, based on a score for a record set of records in which a cell set, among the plurality of cell sets, which is included in the column set is included.

Abstract: A processor obtains a table that contains numerical values or character strings in its cells. The processor then replaces each numerical value with a first constant value, and each character string with a second constant value. The two constant values have opposite signs. The processor generates area datasets each including first to third rectangular areas. The right side of the second rectangular area coincides with the left side of the first rectangular area. The bottom side of the third rectangular area coincides with the top side of the first rectangular area. With respect to each generated area dataset, the processor compares a sum of first and second constant values in the first rectangular area with a sum of first and second constant values in the second and third rectangular areas. The processor outputs at least one of the area datasets according to the comparison result.

Abstract: A data processing method executed by a computer, the data processing method including specifying a first region range among from a data table, a first region range including a plurality of numerical value regions which are continuously disposed in a first direction, a plurality of numerical values in the plurality of numerical value regions having a relationship with a specified numerical value in an adjacent region, specifying a second region range, the second region range being specified by shifting the first region range in a second direction, the second region range including at least one character string region and at least one blank region, associating a character string in the at least one character string region and the plurality of numerical values, and outputting data that indicates an association between the character string in the at least one character string region and the plurality of numerical values.