34. The computer-readable medium of claim 33 , wherein the computer-executable instructions are operable to cause the one or more machines to perform operations further comprising: receiving the query, the query including multiple keywords; wherein the determining comprises generating multiple initial rankings corresponding to the multiple keywords, each of the multiple initial rankings indicating authority of the nodes with respect to each respective keyword; and wherein the generating the keyword-specific ranking comprises combining the multiple initial rankings.
34. The computer-readable medium of claim 33 , wherein the computer-executable instructions are operable to cause the one or more machines to perform operations further comprising: receiving the query, the query including multiple keywords; wherein the determining comprises generating multiple initial rankings corresponding to the multiple keywords, each of the multiple initial rankings indicating authority of the nodes with respect to each respective keyword; and wherein the generating the keyword-specific ranking comprises combining the multiple initial rankings. 36. The computer-readable medium of claim 34 , wherein the determining comprises: generating global node rank information; and generating keyword-specific node rank information using the global node rank information as initial values for iterative processing, the keyword-specific node rank information being generated before receipt of the query.