Kuwanikwa kweEnsemble Nzira
Munyika ine simba yesainzi yedata, nzira dzakabatanidzwa dzakazvimisikidza sezvishandiso zvakakosha zvevashandi vari kutsvaga kukwidziridza chokwadi chekufungidzira modhi. Isu tichaongorora hwaro hweidzi nzira dzinobvumira kudzika uye nuanced kuongororwa kwedata.
Ensemble nzira, dzakadai seBagging kana Boosting, inopa nzira yekubatana uko akawanda mamodhi ekudzidza emuchina anoshanda mukonsati kuti ape fungidziro dzakanyatsojeka kupfuura dzakawanwa nemhando imwe chete. Iyi synergy haingogadzirisi kurongeka, asi zvakare inoderedza njodzi yekuwedzeredza, gomba rinowanzoitika mukuenzanisa data.
Nekunyura mukudzidziswa uku, iwe unotungamirwa kuburikidza neakakosha pfungwa kuseri kweidzi nzira, kukugadzirira iwe kuti uzvisanganise zvine hunyanzvi mumapurojekiti ako esainzi data. Kunyangwe iwe uri wekutanga uchitsvaga kumisa hwaro hwakasimba kana nyanzvi ine ruzivo iri kutsvaga kunatsa hunyanzvi hwako, iyi dzidziso inokupa iwe yakakwana uye yakadzama sumo kune nyika ye ensemble nzira.
Iko kushanda kweBagging uye Boosting
Bagging uye Boosting nzira mbiri dzakabatanidzwa dzakashandura nzira iyo nyanzvi dzinosvika nayo kufanotaura modhi. Bagging, kana Bootstrap Aggregating, inosanganisira kusanganisa mhedzisiro yemamodheru akati wandei kuti uwane yakagadzikana uye yakasimba kufanotaura. Iyi tekinoroji inonyanya kushanda pakudzikisa mutsauko uye kudzivirira kuwandisa.
Kune rimwe divi, Boosting inotarisa pakugadzirisa kukanganisa kwakaitwa nemamodheru apfuura. Nekupa huremu hwepamusoro kune zvisizvo zvakarongwa zvakacherechedzwa, Boosting zvishoma nezvishoma inovandudza kuita kwemuenzaniso. Iyi nzira ine simba pakuwedzera kurongeka uye kuderedza kusarura.
Kuongorora matekiniki aya kunoratidza kugona kwavo kushandura nzira iyo data inoongororwa nekududzirwa. Nekubatanidza Bagging uye Boosting mune yako ongororo, iwe unozogona kudhirowa dzakanyatso mhedziso uye nekugonesa ako ekufungidzira mamodheru.
Random miti, chinhu chikuru chitsva
Miti isina kujairika, kana Random Masango, inomiririra kufambira mberi kwakakosha mumunda we ensemble nzira. Vanosanganisa miti yakawanda yesarudzo kugadzira imwe inoshanda uye yakasimba modhi. Muti wega wega unovakwa uchishandisa zvisina kurongeka subset yedata, iyo inobatsira kuunza kusiyana mumuenzaniso.
Imwe yemabhenefiti makuru emiti isina kurongeka ndiko kugona kwavo kubata nhamba yakakura yemhando dzakasiyana pasina kuda kusarudzwa kwepamberi. Uye zvakare, ivo vanopa yakanakisa kuramba kune ruzha kana isina kukwana data.
Imwe bhenefiti huru kukosha kwezvinoshanduka. Miti isina kujairika inoongorora kukanganiswa kweimwe neimwe shanduko pakufanotaura, ichibvumira kuzivikanwa kwezvinhu zvakakosha zvinopesvedzera modhi. Hunhu uhu hwakakosha pakunzwisisa hukama huri mu data.
Muchidimbu, miti isina kurongeka chishandiso chakakosha kune chero nyanzvi inoshuvira kushandisa zvizere kugona kwe ensemble nzira. Ivo vanopa yakasarudzika musanganiswa wekurongeka, kusimba uye kududzira.
