Video: Dab tsi yog pawg tsom xam hauv cov ntaub ntawv mining?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Clustering yog txheej txheem ntawm kev ua ib pawg ntawm cov khoom paub daws teeb meem rau hauv cov chav kawm ntawm cov khoom zoo sib xws. Cov ntsiab lus nco ntsoov. A pawg ntawm cov ntaub ntawv cov khoom tuaj yeem kho raws li ib pawg. Thaum ua kev txheeb xyuas pawg , peb thawj partition txheej ntawm cov ntaub ntawv mus rau hauv pab pawg raws li cov ntaub ntawv zoo sib xws thiab tom qab ntawd muab cov ntawv sau rau cov pab pawg.
Ib yam li ntawd, koj txhais li cas los ntawm kev txheeb xyuas pawg?
Kev tshuaj xyuas pawg yog ib qho kev faib tawm cov txheej txheem uas ib pawg ntawm cov khoom lossis cov ntsiab lus nrog cov yam ntxwv zoo sib xws yog pawg ua ke hauv pawg . Lub hom phiaj ntawm kev txheeb xyuas pawg yog los teeb tsa cov ntaub ntawv pom rau hauv cov qauv tsim muaj txiaj ntsig kom tau txais kev pom ntxiv los ntawm lawv.
Tsis tas li ntawd, pawg txheej txheem yog dab tsi? Clustering txoj kev yog siv los txheeb xyuas cov pab pawg ntawm cov khoom zoo sib xws hauv cov ntaub ntawv sib txawv uas tau sau los ntawm thaj chaw xws li kev lag luam, bio-kev kho mob thiab geo-spatial. Lawv yog ntau hom kev sib koom ua ke , suav nrog: Partitioning txoj kev . Hierarchical pawg . Qauv-raws li pawg.
Ib yam li ntawd, tib neeg nug, dab tsi yog pawg soj ntsuam thiab nws hom?
Cov kev siv feem ntau ntawm kev txheeb xyuas pawg hauv kev teeb tsa kev lag luam yog segment cov neeg siv khoom lossis kev ua ub no. Hauv tsab xov xwm no peb yuav tshawb txog plaub qhov yooj yim hom ntawm kev txheeb xyuas pawg siv nyob rau hauv cov ntaub ntawv science. Cov no hom yog Centroid Ua pawg , Ceev ceev Ua pawg Kev faib tawm Ua pawg , thiab Connectivity Ua pawg.
Vim li cas peb thiaj ua pawg soj ntsuam?
Kev tshuaj xyuas pawg tuaj yeem yog cov cuab yeej siv cov ntaub ntawv muaj zog rau txhua lub koom haum uas xav txheeb xyuas cov neeg siv khoom sib cais, kev muag khoom, lossis lwm yam kev coj cwj pwm thiab yam khoom. Piv txwv li, cov neeg muab kev tuav pov hwm siv kev txheeb xyuas pawg txhawm rau txheeb xyuas kev dag ntxias, thiab cov tsev txhab nyiaj siv nws rau qhov qhab nia credit.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm pab pawg cov ntaub ntawv thiab cov ntaub ntawv tsis yog pawg?
Ob leeg yog cov ntaub ntawv muaj txiaj ntsig ntawm cov ntaub ntawv tab sis qhov sib txawv ntawm lawv yog cov ntaub ntawv tsis muaj ntaub ntawv yog rawdata. Qhov no txhais tau hais tias nws nyuam qhuav tau sau tab sis tsis txheeb rau hauv ib pawg lossis cov chav kawm. Ntawm qhov tod tes, groupeddata yog cov ntaub ntawv uas tau teeb tsa ua pawg los ntawm cov ntaub ntawv nyoos
Dab tsi yog qhov yuav tsum tau ua ntawm pawg hauv cov ntaub ntawv mining?
Cov kev cai tseem ceeb uas ib pawg algorithm yuav tsum txaus siab yog: scalability; soj ntsuam nrog ntau hom cwj pwm; nrhiav pom pawg nrog arbitrary zoo; yam tsawg kawg nkaus rau kev paub sau npe los txiav txim qhov kev nkag tsis tau; muaj peev xwm daws cov suab nrov thiab outliers;
Dab tsi yog cov haujlwm hauv kev tsom xam cov khoom taw qhia?
OOAD - Object Oriented Analysis Qhia cov khoom thiab pab pawg hauv cov chav kawm. Txheeb xyuas cov kev sib raug zoo ntawm cov chav kawm. Tsim tus neeg siv khoom tus qauv kos duab. Txhais cov neeg siv khoom tus cwj pwm. Txhais cov haujlwm uas yuav tsum tau ua hauv cov chav kawm. Saib glossary
Dab tsi yog qhov sib txawv ntawm cov ntaub ntawv hauv cov ntaub ntawv mining?
Cia peb tham txog yam ntaub ntawv twg tuaj yeem raug mined: Cov ntaub ntawv tiaj tus. Relational Databases. DataWarehouse. Transactional Databases. Multimedia Databases. Spatial Databases. Lub Sijhawm Series Databases. World Wide Web (WWW)
Dab tsi yog cov teeb meem ntawm kev tswj cov ntaub ntawv hauv cov ntaub ntawv ib txwm muaj?
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