The eigenvalue nsogbu na-atụ aro na 1976 site Gabriel Pinski na Francis Narin, bụ ndị na-arụ ọrụ na scientometrics ranking na nkà mmụta sayensị magazin, na 1977 site Thomas Saaty na ya echiche nke Analytic n'usoro nhazi usoro nke weighted ọzọ nhọrọ, na 1995 site Bradley Ịhụnanya na Steven Sloman dị ka a cognitive nlereanya maka echiche, na centrality algọridim.A search engine na-akpọ "RankDex" si IDD Ozi Services, e mere site Robin Li na 1996, mepụtara a atụmatụ maka saịtị-akara na page-akara. zoro aka ya search usoro dị ka "njikọ analysis", nke gụnyere n'usoro ewu ewu nke a na saịtị weebụ dabeere na otú ọtụtụ ndị ọzọ na saịtị nwere jikọọ ya. RankDex, mbụ search engine na saịtị-akara na saịtị-akara algọridim, na oru na 1996. patented technology na 1977 site Thomas Saaty na ya echiche nke Analytic n'usoro nhazi usoro nke weighted ọzọ nhọrọ, na na 1995 site Bradley Ịhụnanya na Steven Sloman dị ka a cognitive nlereanya maka echiche, na-elekwasị anya na centrality algọridim.
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