K-txhais tau tias yog classical algorithm rau cov ntaub ntawv pawghauv cov ntawv mining, tab sis nws tsis tshua siv rau kev xaiv tshwj xeeb. … Peb siv k-txhais txoj hauv kev los ntes ob peb pawg centroids rau txhua chav kawm, thiab tom qab ntawd xaiv cov lus ntau zaus hauv centroids raws li cov ntawv sau rau categorization.
Puas k- txhais tau tias ua haujlwm nrog cov ntaub ntawv categorical?
The k-Means algorithm tsis muaj feem xyuam rau cov ntaub ntawv categorical, vim cov categorical variables yog discrete thiab tsis muaj tej yam ntuj tso keeb kwm. Yog li xam euclidean nrug rau xws li qhov chaw tsis muaj qab hau.
Puas k- txhais tau tias siv rau kev sau ntawv?
K-hais tias pawg yog hom kev kawm tsis muaj kev saib xyuas, uas yog siv thaum peb tsis muaj cov ntaub ntawv sau npe raws li peb cov ntaub ntawv, peb muaj cov ntaub ntawv tsis muaj npe (txhais tau tias, yam tsis tau txhais pawg lossis pawg). Lub hom phiaj ntawm qhov algorithm no yog nrhiav cov pab pawg hauv cov ntaub ntawv, qhov tsis muaj. ntawm pawg yog sawv cev los ntawm qhov sib txawv K.
Peb puas siv k- txhais tau tias kev faib tawm?
KMeans yog pawg algorithm uas faib cov kev soj ntsuam rau hauv pawg k. Txij li thaum peb tuaj yeem hais tus lej ntawm pawg, nws tuaj yeem siv tau yooj yim hauv kev faib tawm qhov twg peb faib cov ntaub ntawv rau hauv pawg uas tuaj yeem sib npaug lossis ntau dua li cov chav kawm.
Qhov twg pawg algorithm yog qhov zoo tshaj plaws rau cov ntaub ntawv?
rau kev sib sau cov ntawv vectors koj tuaj yeem siv hierarchical clustering algorithms xws li HDBSCAN uas tseem xav txog qhov ceev. hauv HDBSCAN koj tsis tas yuav muab tus lej ntawm pawg li hauv k- txhais tau tias thiab nws muaj zog dua feem ntau hauv cov ntaub ntawv nrov.
