Hauv kev txheeb cais, k-ze ze cov neeg nyob sib ze algorithm yog ib qho kev faib tawm uas tsis yog parametric ua ntej tsim los ntawm Evelyn Fix thiab Joseph Hodges hauv 1951, thiab tom qab ntawd nthuav dav los ntawm Thomas Cover. Nws yog siv rau kev faib thiab regression. Nyob rau hauv ob qho tib si, cov tswv yim muaj xws li k ze tshaj kev cob qhia piv txwv nyob rau hauv cov ntaub ntawv teev.
K ze ze tshaj plaws ua haujlwm li cas?
KNN ua haujlwm los ntawm nrhiav qhov kev ncua deb ntawm cov lus nug thiab tag nrho cov piv txwv hauv cov ntaub ntawv, xaiv tus lej piv txwv (K) ze tshaj plaws rau cov lus nug, tom qab ntawd pov npav rau feem ntau nquag daim ntawv lo (nyob rau hauv cov ntaub ntawv ntawm kev faib) los yog nruab nrab cov ntawv (nyob rau hauv cov ntaub ntawv ntawm regression).
K Nearest Neighbor algorithm txhais li cas?
K Zej Zog Zej Zog yog yooj yim algorithm uas khaws tag nrho cov xwm txheej muaj thiab faib cov ntaub ntawv tshiab lossis rooj plaub raws li kev ntsuas zoo sib xws. Nws feem ntau yog siv los faib cov ntaub ntawv taw qhia raws li nws cov neeg nyob sib ze raug cais li cas.
K Nearest Neighbor machine learning yog dab tsi?
K-Nyob ze ze tshaj plaws yog ib qho ntawm qhov yooj yim tshaj plaws Machine Learning algorithms raws li Kev Saib Xyuas Kev KawmK-NN algorithm xav tias qhov zoo sib xws ntawm cov ntaub ntawv tshiab / cov ntaub ntawv thiab cov ntaub ntawv muaj thiab tso cov ntaub ntawv tshiab rau hauv qeb uas zoo ib yam li cov pawg muaj.
K qhov ze tshaj plaws yog dab tsi?
Nws khaws cov ntaub ntawv qhia kev cob qhia thiab kawm los ntawm nws tsuas yog thaum lub sijhawm ua qhov kev kwv yees lub sijhawm tiag tiag. Qhov no ua rau KNN algorithm sai dua li lwm cov algorithms uas xav tau kev cob qhia xws li. SVM, Linear Regression thiab lwm yam.
