K txhais li cas hauv Python?

2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47

K - txhais tau tias Clustering hauv Python . K - txhais tau tias clustering yog ib pawg algorithm uas aims muab faib n kev soj ntsuam rau hauv k pawg. Initialization - K pib “ txhais tau tias ” (centroids) yog tsim los ntawm random. Txoj haujlwm – K pawg yog tsim los ntawm kev koom nrog txhua qhov kev soj ntsuam nrog qhov ze tshaj plaws centroid.

Ntxiv rau qhov no, K txhais tau tias siv rau dab tsi?

K - txhais tau tias clustering yog ib hom kev kawm tsis muaj kev saib xyuas, uas yog siv thaum koj muaj cov ntaub ntawv tsis muaj npe (piv txwv li, cov ntaub ntawv tsis muaj pawg lossis pawg). Cov centroids ntawm cov K pawg, uas tuaj yeem ua tau siv rau sau cov ntaub ntawv tshiab. Daim ntawv lo rau cov ntaub ntawv kev cob qhia (txhua qhov chaw cov ntaub ntawv raug muab rau ib pawg)

N_init hauv K txhais li cas? Ntau tshaj ntawm iterations ntawm lub k - txhais tau tias algorithm rau ib tug khiav. n_ ib : int, default: 10. Number of time the k - txhais tau tias algorithm yuav khiav nrog txawv centroid noob.

Qhov thib ob, qhov qhab nias K txhais li cas?

K - txhais tau tias yog ib qho yooj yim unsupervised tshuab kev kawm algorithm uas pab pawg cov ntaub ntawv mus rau hauv ib tug tshwj xeeb naj npawb ( k ) ntawm pawg. Txoj kev luj tshib khiav k - txhais tau tias clustering ntawm dataset rau ib tug ntau yam ntawm cov nqi rau k (hais los ntawm 1-10) thiab tom qab ntawd rau txhua tus nqi ntawm k suav qhov nruab nrab qhab nias rau txhua pawg.

K txhais tau tias algorithm ua haujlwm li cas?

Cov k - txhais tau tias pawg algorithm sim faib cov ntaub ntawv tsis qhia npe (ib pawg uas tsis muaj cov ntaub ntawv hais txog tus kheej hauv chav kawm) rau hauv tus lej tas ( k ) ntawm pawg. Thaum xub thawj k tus naj npawb ntawm cov hu ua centroids raug xaiv. Txhua lub centroid yog tom qab ntawd teem rau tus lej lej txhais tau tias ntawm pawg nws txhais.