Permutation invariance for representing linearized tabular data

A computer system, the computer system comprising:

• one or more processors, one or more computer-readable memories, one or more computer-readable tangible storage medium, and program instructions stored on at least one of the one or more computer-readable tangible storage medium for execution by at least one of the one or more processors via at least one of the one or more computer-readable memories, wherein the computer system is capable of performing a method comprising:
• receiving input including tabular data and linearizing a column or row within the received tabular data;
• automatically assigning an increasing sequence of position identifiers to each non-delimiting tokenized cell in the linearized column or row until a header delimiter is reached;
• in response to reaching the header delimiter, automatically assigning a monotonically increasing sequence of position identifiers for each non-delimiting tokenized cell positioned after the header delimiter, restarting from an integer corresponding to 1 greater than the position identifier assigned to the header delimiter for each non-delimiting tokenized cell positioned after cell delimiters;
• automatically assigning a static position identifier for each of the cell delimiters in the linearized column or row, the static position identifier being 1 greater than a highest position identifier assigned to the non-delimiting tokenized cells;
• and
• automatically outputting an encoded permutation-invariant representation of the linearized column or row.

A computer program product, the computer program product comprising:

• one or more computer-readable tangible storage medium and program instructions stored on at least one of the one or more computer-readable tangible storage medium, the program instructions executable by a processor capable of performing a method, the method comprising:
• receiving input including tabular data and linearizing a column or row within the received tabular data;
• automatically assigning an increasing sequence of position identifiers to each non-delimiting tokenized cell in the linearized column or row until a header delimiter is reached;
• in response to reaching the header delimiter, automatically assigning a monotonically increasing sequence of position identifiers for each non-delimiting tokenized cell positioned after the header delimiter, restarting from an integer corresponding to 1 greater than the position identifier assigned to the header delimiter for each non-delimiting tokenized cell positioned after cell delimiters;
• automatically assigning a static position identifier for each of the cell delimiters in the linearized column or row, the static position identifier being 1 greater than a highest position identifier assigned to the non-delimiting tokenized cells;
• and
• automatically outputting an encoded permutation-invariant representation of the linearized column or row.