1. A computer-implemented method for pairing a new document to a document from a plurality of documents, comprising: for each of the new document and the plurality of documents, generating a vector uniquely associated with a document of the new document and the plurality of documents, wherein: the vector comprises a number of elements equal to a number of terms of interest; and for each term of interest, an associated element value of the vector is assigned as zero if the term of interest does not occur in the document and one if the term does occur in the document; for each document from the plurality of documents, determining a similarity between the vector for the new document and the vector for the document from the plurality of documents; and selecting a document from the plurality of documents as related to the new document in response to determining that the similarity between the vector for the new document and the vector for the document from the plurality of documents is greater than or equal to a threshold value.