1. A computer-implemented method, comprising: accessing, by at least one processor, a corpus of documents; determining, by the at least one processor, that a particular document by a particular author and in the corpus of documents includes two or more different content pieces that each occur in at least one of one or more other documents in the corpus of documents; determining, by the at least one processor, a quantity of (i) other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents, or (ii) authors associated with the other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents; adjusting, by the at least one processor, a rank of the particular author in relation to other authors based at least in part on the quantity of (i) other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents, or (ii) authors associated with the other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents; and indexing, by the at least one processor, a quantity of the particular document and other documents by the particular author at a greater frequency than a quantity of documents by another author who is ranked lower than the particular author, wherein the quantity of the particular document and other documents by the particular author is greater than the quantity of documents by the other author who is ranked lower than the particular author.
1. A computer-implemented method, comprising: accessing, by at least one processor, a corpus of documents; determining, by the at least one processor, that a particular document by a particular author and in the corpus of documents includes two or more different content pieces that each occur in at least one of one or more other documents in the corpus of documents; determining, by the at least one processor, a quantity of (i) other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents, or (ii) authors associated with the other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents; adjusting, by the at least one processor, a rank of the particular author in relation to other authors based at least in part on the quantity of (i) other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents, or (ii) authors associated with the other documents in the corpus of documents whose content pieces are included in the particular document by the particular author and in the corpus of documents; and indexing, by the at least one processor, a quantity of the particular document and other documents by the particular author at a greater frequency than a quantity of documents by another author who is ranked lower than the particular author, wherein the quantity of the particular document and other documents by the particular author is greater than the quantity of documents by the other author who is ranked lower than the particular author. 5. The method of claim 1 , wherein the particular author is different from authors of the one or more other documents in the corpus of documents.