Ibiti byo gufata ibyemezo n'amashyamba asanzwe
Igiti cyemezo gifata ubuhanuzi ubaza urukurikirane rworoshye yego / ntakibazo, nkibicapo.
Incamake
A random forest combines hundreds of such trees and lets them vote, which is far more accurate and robust.
Kwibira cyane
Igiti cyemezo kigabanya amakuru intambwe ku yindi: kuri buri node itoranya ibiranga nimbibi zitandukanya neza ibisubizo, hanyuma amashami kugeza igeze kubihanura kumababi. Ibiti birakunzwe kuko byoroshye gusoma; urashobora gukurikirana neza impamvu icyemezo cyafashwe. Intege nke zabo zirakwiriye, aho igiti cyimbitse gifata mu mutwe urusaku kandi kigahanura nabi amakuru mashya. Amashyamba asanzwe akosora ibi mugutoza ibiti byinshi kubice bitunguranye byamakuru (tekinike yitwa bagging) hamwe nibice bidasanzwe biranga buri gice. Ibiti bikora amakosa atandukanye, bityo ugereranije amajwi yabo akuraho amakosa kugiti cye. Igisubizo nimwe mubintu byizewe, binganiza-algorithm ya data ya mbonerahamwe, ikoreshwa cyane mbere yo kugera kubwiga bwimbitse.
Ubushishozi
Buri gutandukana byatoranijwe kugirango bigaragaze 'ubuziranenge.' Gutondekanya ibiti bigabanya umwanda wa Gini cyangwa entropiya; ibiti byo gusubira inyuma bigabanya itandukaniro (ikosa rya kare). Amashyamba asanzwe yongeramo amasoko abiri yubushake: bootstrap sampling (buri giti kibona icyitegererezo cyashushanijwe hamwe nuwasimbuwe) hamwe no gutoranya ibintu bidasanzwe kuri buri gutandukana. Ibi bitandukanya ibiti kuburyo impuzandengo yabo igereranijwe ifite itandukaniro rito ugereranije nigiti kimwe, nta kuzamura kubogama cyane. Ingero ziva mu mufuka, zisigaye kuri buri giti cyibiti, zitanga igereranya ryemewe.
Ingaruka z'Ingamba
Ibyemezo bisobanutse
Iragufasha gutandukanya ibyifuzo bya tekiniki bisobanutse nururimi rwo kwamamaza.
Igiciro na bije
Urashobora kubaza ibibazo byiza byo gushyira mubikorwa mbere yo gukoresha amafaranga cyangwa igihe.
Itsinda hamwe nakazi
Amakipe asangiye ibitekerezo akora ibicuruzwa byiza, politiki, nibyemezo byo kwiga.
Ejo hazaza h'ibiti byo gufata ibyemezo n'amashyamba asanzwe
Amashyamba yo mu kibaya adasanzwe akomeje kujya ku murongo fatizo, ariko icyerekezo cyerekeje ku biti bizamurwa buhoro buhoro nka XGBoost, LightGBM, na CatBoost, byubaka ibiti bikurikirana kugira ngo bikosore amakosa yabanje kandi akenshi biri mu marushanwa yo ku mbonerahamwe. Ibi biti byibiti bikomeje kurenza imiyoboro yimitsi kuri datasets nyinshi zubatswe. Tegereza imirimo ikomeje kumuvuduko, amahugurwa ya GPU, na cyane cyane ibikoresho bisobanurwa nka SHAP, kubera ko gusobanurwa nimpamvu nyamukuru inganda zagenzuwe zikomeza guhitamo ibiti bishingiye kubiti hejuru yumukara-agasanduku kimbitse.
Gushyira mu bikorwa Isi
Gutanga inguzanyo no kwemeza inguzanyo, aho banki ziha agaciro inzira isobanutse, igenzurwa.
Ibyago byubuvuzi guhanura ibendera ibintu byabarwayi byatumye basuzuma cyangwa bakanguka.
Abakiriya ba churn bahanura kuva kuri konte yimbonerahamwe hamwe namakuru yo gukoresha.
Ikiranga-akamaro isesengura kugirango uhindure ibintu bihinduka cyane muri dataset.
Ingaruka & Kurinda
Amakipe atandukanye arashobora gukoresha ijambo rimwe muburyo butandukanye, sobanura intera hakiri kare.
Ibipimo birashobora kugaragara bikomeye mugihe imikorere-yisi-itaringaniye.
Kwirengagiza ubuziranenge bwamakuru na gahunda yo gusuzuma akenshi bitanga ibisubizo byoroshye.
Igishushanyo mbonera
Tangira nururimi rusobanutse rwibisubizo ukeneye.
Toranya intsinzi imwe hamwe nuburyo bumwe bwo gutsindwa mbere yo kwipimisha.
Koresha umuderevu muto hamwe namakuru ahagarariye, ntabwo ari demo yashizweho.
Inyandiko aho Ibiti byicyemezo namashyamba asanzwe bifasha kandi nuburyo bworoshye bworoshye.
Komeza Ubushakashatsi
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Ubuyobozi bukurikira
Gufata ibyemezo bya AI
Ibibazo bikunze kubazwa
What is Decision Trees and Random Forests?
Igiti cyemezo gifata ubuhanuzi ubaza urukurikirane rworoshye yego / ntakibazo, nkibicapo. Ishyamba ridasanzwe rihuza amagana yibiti nkibi bikareka bagatora, bikaba byiza cyane kandi bikomeye.
Nigute igiti cyemezo gifata ubuhanuzi?
Icyemezo cyigiti cyinjiza ibitekerezo binyuze mumashami yibibazo biranga kugeza igeze kumababi atanga ubuhanuzi.
Ni ubuhe ntege nyamukuru z'igiti kimwe, cyimbitse?
Ibiti byimbitse birashobora guhuza amakuru yamahugurwa cyane, gufata urusaku no kumenyekanisha nabi kurugero rushya.
Nigute ishyamba ridasanzwe ryatera imbere ku giti kimwe?
Muguhugura ibiti byinshi byangiritse no kugereranya cyangwa gutora, ishyamba rihagarika amakosa yibiti kugiti cye kandi bikagabanya gukwirakwira.
'Gupakira' bivuga iki mu mashyamba adasanzwe?
Gupakira (bootstrap guteranya) biha buri giti icyitegererezo cyashushanijwe no gusimburwa, ibiti rero biratandukanye kandi impuzandengo yabyo irahagaze neza.
Ni ubuhe bipimo ibiti bitondekanya bisanzwe bikoresha muguhitamo gutandukana?
Gutondekanya ibiti bitoranya ibice byinshi bigabanya umwanda wa Gini cyangwa entropiya, ingamba zuburyo ivangwa ryamasomo kuri node.