Uphiko uthishanhloko

Uphiko oyinhloko kusekelwe bezama ukuchaza ezingeni esiphezulu sokuhluka e ezithile eziguquguqukayo, futhi kuthambekele izakhi matrix ukuhlanganisa idayagonali. Kukhona enye indlela, ngokusekelwe isici ukuhlaziywa, okuhloswe ngaso okuqanjwe isilinganiselo matrix ukuhlanganisa usebenzisa inombolo ethile yezici (ngaphansi kwenani predetermined lokwehlukile), kodwa izindlela isilinganiselo kakhulu kuhluke indlela yokuqala ezihlongozwayo.

Ngakho, indlela isici ukuhlaziywa ungakwazi ukuchaza ukuhlanganisa emkhatsini eziguquguqukayo ngokwabo, futhi ngamakhasimende phezu izakhi yohlobo ukuhlanganisa-matrix ngaphandle kwakhe ngokuphambeneyo.

Kususelwa ukusetshenziswa esisebenzayo, zama ukuqonda isidingo kwesicelo indlela ethile. Factor ukuhlaziywa isetshenziswa uma kukhona isithakazelo ukuba abacwaningi ngitadisha ubuhlobo obuphakathi eziguquguqukayo, uthishanhloko ingxenye ukuhlaziywa isetshenziswa lapho isidingo ukunciphisa ubukhulu idatha, futhi ngezinga elincane nencazelo yabo liyadingeka.

Ekusebenzelaneni kwethu, singabona ukuthi izindlela isici analysis besebenzisa inombolo ngokwanele ezinkulu kokuma. Le mali kufanele kube i-oda ezidlula ephakeme ukwedlula ngaphansi kwezici eziningana zale mbali.

Uphiko oyinhloko okudume kakhulu ucwaningo ukumaketha, njengoba ingasetshenziswa khona idatha yomthombo multicollinearity. Ngo inqubo emakethe ucwaningo lwemibuzo aqukethe imibuzo efanayo, futhi izimpendulo kubo futhi kuzohambisana nezimiso multicollinearity.

Uphiko oyinhloko kuhle ukucabangela iqoqo izinkomba ukuthi kufanele kube umcwaningi ukuqondisa pre-ukukhethwa izingxenye noma izici. Into ebaluleke kakhulu lawa eigenvalues zokuchaza ezingeni ukuhlakazwa eziguquguqukayo zichazwe yilo isici. Kukhona omunye umthetho obalulekile isithupha, okuwusizo kakhulu kucatshangwa inani izici (izici kufanele kube njengoba nje kukhona eigenvalues ezingaphezu kweyodwa). Lo mthetho bangachazela kulula kancane - the eigenvalues baveze isabelo okwahlukile kwesejwayelekile lokwehlukile uchaza lezi zici, futhi uma kwenzeka yokudlula iyunithi yayo kufanele asho lawo nginihlakaze equkethe angaphezu kwelilodwa onhlobonhlobo.

Kuyadingeka ukucacisa waphinda ukuthi kokubusa "eigenvalues ngabanye" - enokwehla, kanye nesidingo ukusebenzisa kwayo kungenziwa kuphela kunqunywa umcwaningi. Ngokwesibonelo, eigenvalue inenani esingaphansi ngobunye, kodwa kungenxa ukusabalala, wadibaniswa eziguquguqukayo. Omunye onekhono emkhakheni marketing kubaluleke kakhulu ukuthi kube izingxenye siphawule izici babe nomuzwa eningi. Futhi labo izici, eliqukethe eigenvalues okungaphezu kokukodwa, kodwa ungenalo incazelo okunenjongo, kungukuthi kunakwe. Futhi kungase kube isimo amaqiniso abonisa okuphambene.

Enye impikiswano ebalulekile ethinta ukusebenza okungokoqobo kwezimiso izindlela isici ukuhlaziywa - umbuzo ukujikeleza. kungase kubhekwe njengokweba ongakhetha ezinjalo rotations. Ethandwa kakhulu wabo - indlela varimax. Kusekelwe ileveli enkulu ukuhlakazwa lokwehlukile ku ngamunye isici ngabanye. Le ndlela kusiza ukuthola ukujikisa, lapho ezinye eziguquguqukayo kukhona izindinganiso eziphakeme, kanti abanye - ongaphakeme ngokwanele ukuba ngamunye isici ngabanye.

Enye indlela Ukujikeleza - kvartimaks, kuyasiza ukuthola Ukujikeleza ezithile, lapho izici ngamunye okuguquguqukayo ngabanye ukuba imithwalo kokubili ongaphakeme kanye eliphezulu.

ekvimaks Ukujikeleza ndlela ukusilela phakathi kwalezi ndlela ezimbili okuxoxwe ngawo ngenhla.

Zonke lezi zindlela ezingezansi orthogonal ngezimbazo Okusizayo perpendicular, ngesikhathi ukusetshenziswa kwabo usukela akukho ukuhlanganisa phakathi izici ngamunye.