According to the patent document Google Author Rank is:
The identity of the individual factors responsible for the content can be used to assess the impact of a search.
Assuming that the agent (writer) has a high reputation score, represents the established reputation to create valuable content and then adds the content is signed by the author, will be promoted in the search results with respect to the content of no fixed agents (authors of content) or the content of agents ( content authors) with the reputation.
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