usespecialprograms,whicharenamedasspiderorbot.TheseprogramsmovebyusinghyperlinkstructureoftheWeb.Theyn-avigatethroughwebpagesperiodicallyandcapturechangesthathavebeenmadesincelastnavigation.Dataobtainedbytherelatedprogramsarestoredinaverywidedatabasesystem.Thisdatabaseiscalledastheindexofthesearchengine.Ontheotherhand,theperformedoperationiscalledas“ind-exing”.Whenusersperformaqueryinordertogetsomedataorinformatio-n,therelatedquerryistransferredtothesearchengineindexandresultsareshowntousersEssentialcompetitionfactoramongsearchenginesisappearedduring“relevantresultshowing,sorting”process.Afterdetermini-ngtherelatedpageswiththeperformedquerry,theymustbeshowntousersinasortedliststructure.Atthispoint,searchenginealgorithmstakeanim-portantroleandtheytrytoshowthemostrelevantr化策略。
一个网站关键词分析必须根据下列规则:一个完