9. A system comprising: one or more processors to: identify a plurality of documents, a first document, of the identified plurality of documents, being linked to by a second document, of the identified plurality of documents, the second document and a third document, of the identified plurality of documents, being in a set of affiliated documents; calculate a first value for each document in the set of affiliated documents, calculating the first value for each document in the set of affiliated documents being based on: a ranking score of the document, and a number of outbound links from the document; determine that the first value calculated for the third document is a maximum of the first values calculated for each document in the set of affiliated documents; assign a ranking score to the first document based the first value calculated for the third document; and store the ranking score.
9. A system comprising: one or more processors to: identify a plurality of documents, a first document, of the identified plurality of documents, being linked to by a second document, of the identified plurality of documents, the second document and a third document, of the identified plurality of documents, being in a set of affiliated documents; calculate a first value for each document in the set of affiliated documents, calculating the first value for each document in the set of affiliated documents being based on: a ranking score of the document, and a number of outbound links from the document; determine that the first value calculated for the third document is a maximum of the first values calculated for each document in the set of affiliated documents; assign a ranking score to the first document based the first value calculated for the third document; and store the ranking score. 12. The system of claim 9 , where the one or more processors are further to: identify affiliations among a plurality of documents in the affiliated set of documents based on traffic patterns between the plurality of documents in the affiliated set of documents, documents, of the plurality of documents in the set of affiliated documents, with a strong affiliation having a similar traffic pattern.