2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev Tshawb Fawb Cov Ntaub Ntawv yog hais txog txheej txheem tseem ceeb ntawm kev ua thawj zaug kev tshawb nrhiav ntawm cov ntaub ntawvtxhawm rau nrhiav pom cov qauv, pom qhov tsis txaus ntseeg, ntsuas kev xav thiab tshawb xyuas cov kev xav nrog kev pab los ntawm Cov ntawv txheeb cais thiab cov duab sawv cev.
Peb tuaj yeem ua dab tsi hauv kev tshawb xyuas cov ntaub ntawv?
Kev Tshawb Fawb Cov Ntaub Ntawv (EDA) yog ib txoj hauv kev los tshuaj xyuas cov ntaub ntawv los piav qhia lawv cov yam ntxwv tseem ceeb. Nws yog siv los nkag siab cov ntaub ntawv, tau txais qee cov ntsiab lus hais txog nws, nkag siab qhov sib txawv thiab kev sib raug zoo ntawm lawv, thiab tsim cov kev xav uas yuav pab tau thaum tsim cov qauv kev kwv yees.
Yuav ua li cas yog cov kauj ruam hauv kev tshawb xyuas cov ntaub ntawv?
Cov kauj ruam hauv Kev Tshawb Fawb Cov Ntaub Ntawv thiab Ua Ntej:
- Kev txheeb xyuas qhov sib txawv thiab cov ntaub ntawv hom.
- Kev ntsuas qhov ntsuas qhov yooj yim.
- Non-Graphical Univariate Analysis.
- Graphical Univariate Analysis.
- Bivariate Analysis.
- Variable transformations.
- Nco tus nqi kho mob.
- kev kho mob tsis zoo.
Kev tshawb nrhiav cov ntaub ntawv tshawb fawb yog dab tsi?
Kev Tshawb Fawb Cov Ntaub Ntawv (EDA) yog thawj kauj ruam hauv cov txheej txheem tshuaj xyuas cov ntaub ntawv. … EDA entails kev ntsuam xyuas ntawm cov qauv, tiam sis, outliers, thiab npaj txhij txog tshwm sim nyob rau hauv cov ntaub ntawv ntsuam xyuas uas twb muaj lawm, thiab siv cov kev pom thiab ntau npaum li cas los qhia cov lus piav qhia uas cov ntaub ntawv yog.qhia.
Dab tsi yog ob txoj hauv kev siv hauv kev tshawb xyuas cov ntaub ntawv?
Cov EDA hom kev kawm yog nraaj lossis ntau(tsis yog duab). Txawm hais tias cov txheej txheem graphical suav nrog kev sau cov ntaub ntawv hauv daim duab kos duab lossis pom kev, txoj hauv kev kom muaj nuj nqis, ntawm qhov tod tes, suav nrog kev suav cov ntsiab lus sau tseg.
Pom zoo:
Cov ntaub ntawv qhia ntawv puas txhawb nqa cov ntaub ntawv kawm?
Cov ntaub ntawv qhia yuav tsum txhawb nqa txoj kev kawm lub tswv yim, cov hom phiaj thiab cov hom phiaj ntawm Cheeb Tsamthiab cov hom phiaj ntawm cov ntaub ntawv kawm uas cov ntaub ntawv yuav raug siv. … Cov ntaub ntawv qhia yuav tsum ua tau raws li cov qauv zoo ntawm cov ntsiab lus tseeb thiab kev nthuav qhia.
Thaum cov ntaub ntawv tshiab cuam tshuam nrog kev muab cov ntaub ntawv qub no hu ua?
Nrog retroactive cuam tshuam, cov ntaub ntawv tshiab cuam tshuam lub peev xwm rov qab cov ntaub ntawv qub. Nrog kev cuam tshuam tsis zoo, nws yog qhov rov qab: cov ntaub ntawv qub cuam tshuam qhov rov qab los ntawm cov ntaub ntawv tshiab tau kawm.
Lub sijhawm nws tshawb nrhiav zebulon pike nrhiav?
Zebulon Pike yog ib tug tub rog Asmeskas tub rog thiab tshawb nrhiav uas tau ua haujlwm hauv Tsov Rog xyoo 1812. Thaum nws ntoj ncig, nws tau sim tshawb nrhiav qhov chaw ntawm Mississippi River. Nws txoj kev ntoj ncig pib thaum General James Wilkinson hauv 1805 txiav txim siab xa nws mus nrhiav qhov chaw ntawm tus dej.
Puas yog cov ntaub ntawv sib tw cov ntaub ntawv raug cai?
Kev tsim "Cov ntaub ntawv cog lus" yog cov ntaub ntawv sau uas txhais lub luag haujlwm, kev lav phib xaub, thiab "Ua haujlwm" raws li Daim Ntawv Cog Lus Tsim Kho, thiab raug cai lij choj rau ob tog (Tswj thiab tus neeg cog lus).
Cov ntaub ntawv twg muaj cov ntaub ntawv bituminous?
Nws muaj ob chav kawm ntawm cov khoom siv bituminous: (1) asph alt; thiab (2) tar. Cov ntaub ntawv no feem ntau yog siv los ua dej-pov thawj sealants, thiab ua cov ntaub ntawv los tuav cov aggregate ua ke nyob rau hauv bituminous pavements. Dab tsi yog cov khoom siv bituminous?
