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Izindlela izibalo zezibalo. ekuhlehleni ukuhlaziywa

Sebenzisa ukuhlaziywa eside ekuhlehleni amaningi aqala Pearson (Pearson) emisebenzini yakhe, esukela 1908 kuze kube manje. Wachaza ke njengesibonelo se-ejenti kuqhutshwa ukudayisa ingcebo. Emaphuzwini akhe phezu izindlu Trade Specialist kwaholela akhawunti yetinhlobo letibanti letehlukene tematheksthi yomthombo idatha ngayinye isakhiwo ngabanye. Ngu imiphumela abathengisa inquma okuyinto isici nethonya elikhulu ku-intengo kuthengiselana.

Ukuhlaziya inqwaba ukuthengiselana wanika imiphumela ezithakazelisayo. Izindleko zokugcina bathonywe izinto eziningi, ngezinye izikhathi kubangele iziphetho nakuba ngisho "kwekhabhoni" ecacile, lapho indlu nge engaba kokuqala okusezingeni eliphezulu lathengiswa, encishisiwe intengo Inkomba.

Isibonelo kwesicelo lokhu ukuhlaziywa yesibili unikezwa umsebenzi nochwepheshe, ophathiswe sokunquma zemihlomulo yabasebenzi. Inselele walala yokuthi ukusatshalaliswa edingekayo akuyona inani elimisiwe ngayinye, futhi ukunamathela ngokuqinile izimiso zayo umsebenzi othize kwenziwa. Ukuvela ezihlukahlukene imisebenzi cishe efanayo okufana izixazululo, zidinga ukubuyekeza ezinemininingwane eminingi ezingeni zezibalo.

Ngo izibalo zezibalo, indawo enkulu lanikezwa "ukuhlehla ukuhlaziywa" sigaba, lapho munye amasu esisebenzayo sasitadisha ukuncika imbozwe nomqondo ekuhlehleni. Lobu budlelwano kuyagcinwa phakathi idatha etholwe cwaningo kwezibalo.

Regression ukuhlaziywa imisebenzi phakathi sebuningini main has izinjongo ezintathu: ukuchaza ezothando ekuhlehleni yefomu jikelele; ukwakhiwa ipharamitha izilinganiso ukuthi awaziwa, ezifakwe kule ndaba ekuhlehleni; kokuhlola ekuhlehleni imicabango kwezibalo. Ngokuhamba ngitadisha ubuhlobo ukuthi kwenzeka phakathi pair of amagugu okuholela ngokucwaninga isahlolwa futhi isibalo izingxenye (okuningi) uthayipha (x1, Y1), ..., (XN, yn), esekelwe isikhundla kwemfundiso yokuziphendukela ekuhlehleni bese uphakamisa ukuthi inani elilodwa Y kukhona okungenzeka ukusatshalaliswa ezithile, naphezu kweqiniso lokuthi omunye X uhlala esinqunyiwe.

Umphumela Y incike ukubaluleka X variable, lokhu kwencika kungenziwa kunqunywa imithetho ehlukahlukene, ukunemba imiphumela kuthonywa isimo kanye nenhloso ukuhlaziya kokuma. Imodeli zokuhlola kusekelwe ezizathwini ezithile okuyizinto lula kodwa ozwakalayo. Isimo main wukuthi ukubaluleka ipharamitha X kulawulwa. namagugu awo banikwa ngaphambi kokuqala ukuhlola.

Uma ngokuhamba ukuhlola, i-pair of eziguquguqukayo ongalawuleki le XY, ukuhlaziya ekuhlehleni eyenziwa indlela efanayo, kodwa nokuchazwa imiphumela, lapho sitadisha cwaningo uxhumano lokwehlukile okungahleliwe, ezisetshenzisiwe ka ukuhlanganisa ukuhlaziywa. izindlela Statistical Awuyena abstract indaba ephathwayo. Bathola isicelo empilweni emikhakheni ehlukahlukene umsebenzi womuntu.

Esikhathini ezincwadini zesayensi ukunquma indlela ngenhla ithole ukusetshenziswa kabanzi elithi komugqa ekuhlehleni ukuhlaziywa. Ukuze kwenombolo X wasebenzisa regressor eside noma inkomba kanye ezincikile ngokuthi Y-futhi criterial. La magama kubonisa zezibalo ubuhlobo eziguquguqukayo, kodwa hhayi ukuba iphenye ubuhlobo esiyimbangela.

Regression ukuhlaziywa iyona ndlela ejwayeleke kakhulu ukuthi isetshenziswa ukucutshungulwa imiphumela ezihlukahlukene kokuma. umsebenzi ngokomzimba futhi yemvelo wafunda esebenzisa le ndlela, ziqale ukusebenza kanye umnotho, futhi art. nezinye izindawo IMisa usebenzisa ekuhlehleni ukuhlaziywa imodeli. Ukuhlaziywa sokuhluka, design zokuhlolwa, ukuhlaziya ngokwezibalo kwemininingwane umsebenzi multidimensional eduze ngale ndlela yokufunda.

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