47. The method of claim 46 , further comprising: calculating a similarity navigation score SNW(O,B), where 
 SNW ( O,B ) =g·S ( O,B ) +h·LA ( B ) +m·FQS ( B ), LA(B) is the link analysis score of B, FQS(B) is the file quality score of B, and g, h, and m are tuning parameters.
48. The method of claim 47 , further comprising: ranking similarity-linked files to provide ranked similarity-linked files.