Data comparison method, data comparison program, and information processing device

A non-transitory computer-readable medium storing a data comparison program to be executed by an information processing device, wherein instructions included in the data comparison program includes:

• acquiring character strings in respective cells that are included in a first table in document data;
• acquiring character strings in respective cells that are included in a second table in the document data, the second table being different from the first table;
• calculating cell similarities for all combinations of the cells that are included in the first table and the cells that are included in the second table, each cell similarity being a similarity between the character string in one of the cells that are included in the first table and the character string in one of the cells that are included in the second table;
• arranging the calculated cell similarities for each row of the first table and for each row of the second table, and extracting a plurality of cell similarities including a highest value among the cell similarities for each row;
• calculating row similarities based on average values of the extracted cell similarities for respective rows, each row similarity being a similarity between a character string in a row included in the first table and a character string in a row included in the second table;
• extracting a plurality of row similarities including a highest value among the calculated row similarities for each combination of the first and second tables;
• determining that the second table corresponds to the first table in a case in which a table similarity is greater than or equal to a predetermined specified value, the table similarity being an average value of the extracted row similarities;
• and
• when determining that the second table corresponds to the first table, identifying a difference between the character strings in the cells that are included in the first table and the character strings in the cells that are included in the second table and correspond to the cells included in the first table.

An information processing device comprising:

• a processor configured to
• acquire character strings in respective cells that are included in a first table in document data;
• acquire character strings in respective cells that are included in a second table in the document data, the second table being different from the first table;
• calculate cell similarities for all combinations of the cells that are included in the first table and the cells that are included in the second table, each cell similarity being a similarity between the character string in one of the cells that are included in the first table and the character string in one of the cells that are included in the second table;
• arrange the calculated cell similarities for each row of the first table and for each row of the second table, and extract a plurality of cell similarities including a highest value among the cell similarities for each row;
• calculate row similarities based on average values of the extracted cell similarities for respective rows, each row similarity being a similarity between a character string in a row included in the first table and a character string in a row included in the second table;
• extract a plurality of row similarities including a highest value among the calculated row similarities for each combination of the first and second tables;
• determine that the second table corresponds to the first table in a case in which a table similarity is greater than or equal to a predetermined specified value, the table similarity being an average value of the extracted row similarities;
• and
• when determining that the second table corresponds to the first table, identify a difference between the character strings in the cells that are included in the first table and the character strings in the cells that are included in the second table and correspond to the cells included in the first table.