Classification of Bibliographic References to Determine the Mutual Influence of Large Areas of Knowledge

It is also possible to form triples, quadruples, etc. of matched arrays, but such arrays are not considered in this paper.

A more general definition of the concept of distribution of publications can be formulated as follows: a table, which indicates the number of publications corresponding to each item (thematic categories, journals, countries, years of publication, etc.) against it.

The task of visual identification in an array exceeding 15 million references is almost unsolvable, and differences even in one sign in case of programmatic identification will lead to publications not being recognized as identical.

A more detailed list of indicators that allows one to get Method 1 used together with Method 2 is as follows: Array of source publications (SPs); Subarray of shared SPs; Share of the subarray of shared SPs: the ratio of the number of shared SPs to the total number of SPs (%); Array of nonunique (duplicate) references; Array of unique references; Subarray of nonunique (duplicate) shared references of the first kind; Share of the subarray of nonunique (duplicate) shared references of the first kind: the ratio of the number of nonunique shared references of the first kind to the total number of nonunique references (%); Subarray of unique shared references of the first kind; Share of the subarray of unique shared references of the first kind: the ratio of the number of unique shared references of the first kind to the total number of unique references (%); Joint subarray of nonunique (duplicate) shared references—the union of the set of shared references of the second kind with the set of shared references of the first kind (combined application of Methods 1 and 2); Share of the joint subarray of nonunique shared references: the ratio of the total number of nonunique (duplicate) shared references of the second kind, which is supplemented by nonunique shared references of the first kind, to the total number of nonunique references (combined application of Methods 1 and 2) (%); Joint subarray of unique shared references—union of the set of unique shared references of the second kind with the set of unique shared references of the first kind (combined application of Methods 1 and 2); Share of the joint subarray of unique shared references: the ratio of the total number of nonunique (duplicate) shared references of the second kind, which is supplemented with unique shared references of the first kind, to the total number of nonunique references (combined application of Methods 1 and 2).