Okuyisisekelo Kokucubungula Idatha
Ezweni lanamuhla ledijithali, idatha ikhona yonke indawo. Bangamandla aqhuba cishe zonke izinqumo zamasu, kungakhathaliseki ukuthi izinkampani ezinkulu noma iziqalo ezintsha. Nokho, ngaphambi kokuba le datha isetshenziswe ngempumelelo, kufanele ihlanzwe futhi ihlaziywe. Kulapho ukuqeqeshwa kwe-OpenClassrooms "Hlanza futhi Hlaziya Isethi Yakho Yedatha" kuqala khona ukusebenza.
Lesi sifundo sinikeza isingeniso esibanzi samasu abalulekile okuhlanza idatha. Ibhekana nezinselele ezivamile ezifana namanani ashodayo, amaphutha okokufaka, nokungahambisani okungahle kuhlaziywe. Ngezifundo ezenziwa ngezandla kanye nezifundo eziyisibonelo, abafundi baqondiswa ngenqubo yokuguqula idatha engahluziwe ibe imininingwane ephathekayo.
Kodwa akugcini lapho. Uma idatha isihlanzekile, ukuqeqeshwa kungena ekuhlaziyweni kokuhlola. Abafundi bathola indlela yokuhlola idatha yabo ngama-engeli ahlukene, ukuthrenda okudalulayo, amaphethini kanye nemininingwane okungenzeka ukuthi igejiwe.
Ukubaluleka Okubalulekile Kokuhlanza Idatha
Noma yimuphi usosayensi wedatha uzokutshela: ukuhlaziya kuhle kuphela njengedatha okusekelwe kuyo. Futhi ngaphambi kokuhlaziywa kwekhwalithi kungenziwa, kubalulekile ukuqinisekisa ukuthi idatha ihlanzekile futhi ithembekile. Yilapho ukuhlanzwa kwedatha kungena khona, isici esivame ukubukelwa phansi kodwa esibaluleke kakhulu sesayensi yedatha.
Isifundo se-OpenClassrooms esithi “Hlanza futhi Hlaziya Isethi Yakho Yedatha” sigqamisa izinselele ezivamile abahlaziyi ababhekana nazo lapho besebenza namasethi edatha omhlaba wangempela. Kusukela kumanani ashodayo namaphutha okokufaka kuye kokungahambisani nezimpinda, idatha eluhlaza akuvamile ukuba ilungele ukuhlaziywa ngokushesha nje lapho isitholiwe.
Uzokwaziswa kumasu namathuluzi ukuze ubone futhi ulawule lawa maphutha. Ukuthi ngokukhomba izinhlobo ezihlukene zamaphutha, ukuqonda umthelela wazo kuzibalo zakho, noma ukusebenzisa amathuluzi afana ne-Python ukuze uhlanze idatha yakho ngempumelelo.
Kodwa ngale kwamasu, kuyifilosofi efundiswa lapha: yokubaluleka kokuqina nokunaka imininingwane. Ngoba iphutha elingabonakali, kungakhathaliseki ukuthi lincane kangakanani, lingahlanekezela ukuhlaziya konke futhi liholele eziphethweni eziyiphutha.
Gxila Ekuhlaziyeni Idatha Yokuhlola
Ngemuva kokuqinisekisa ukuhlanzeka nokuthembeka kwedatha yakho, isinyathelo esilandelayo ukungena phansi kuyo ukuze ukhiphe imininingwane ebalulekile. I-Exploratory Data Analysis (EDA) yileso sinyathelo esibalulekile sokwembula amathrendi, amaphethini, nokudidayo kudatha yakho, futhi isifundo se-OpenClassrooms siyakuqondisa kule nqubo ethakazelisayo.
I-AED ayilona nje uchungechunge lwezibalo noma amagrafu; kuyindlela yenqubo yokuqonda ukwakheka nobudlelwano phakathi kwedathasethi yakho. Uzofunda ukubuza imibuzo efanele, usebenzise amathuluzi ezibalo ukuze uyiphendule, futhi uhumushe imiphumela ngomongo ophusile.
Amasu afana nokusatshalaliswa kwedatha, ukuhlolwa kwe-hypothesis, nokuhlaziywa kwe-multivariate kuzombozwa. Uzothola ukuthi inqubo ngayinye ingadalula kanjani izici ezihlukene zedatha yakho, inikeze ukubuka konke okubanzi.
Kodwa ngaphezu kwakho konke, lesi sigaba sesifundo sigqamisa ukubaluleka kwelukuluku kwisayensi yedatha. I-AED iwukuhlola okuningi njengoba iwukuhlaziya, futhi idinga ingqondo evulekile ukuthola imininingwane engalindelekile.
