Xgb DMatrix ua dab tsi?
Xgb DMatrix ua dab tsi?

Video: Xgb DMatrix ua dab tsi?

Video: Xgb DMatrix ua dab tsi?
Video: Rasa Livecoding: импорт моделей машинного обучения в Rasa Assistant (часть 1) 2024, Kaum ib hlis
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Xgboost luv luv rau eXtreme Gradient Boosting pob. Lub hom phiaj ntawm Vignette no yog qhia koj siv Xgboost tsim ib qho qauv thiab ua kev twv ua ntej. Nws yog qhov ua tau zoo thiab ua kom muaj peev xwm ua tau raws li kev txhawb nqa gradient los ntawm @friedman2000additive thiab @friedman2001greedy.

Tom qab ntawd, ib tug kuj yuav nug, DMatrix yog dab tsi?

DMatrix yog cov ntaub ntawv sab hauv uas siv los ntawm XGBoost uas yog optimized rau ob qho tib si nco efficiency thiab kev kawm ceev. Koj tuaj yeem tsim DMatrix los ntawm numpy.arrays Parameters. data (os.

Tom qab ntawd, lo lus nug yog, XGBoost ua haujlwm sab hauv li cas? XGBoost ua haujlwm li cas . XGBoost yog qhov nrov thiab muaj txiaj ntsig qhib qhov kev siv ntawm gradient boosted ntoo algorithm. Gradient boosting yog ib qho kev saib xyuas kev kawm algorithm, uas sim ua kom raug kwv yees lub hom phiaj sib txawv los ntawm kev sib txuas cov kwv yees ntawm cov qauv yooj yim, tsis muaj zog.

Cov lus nug tseem yog, kev siv XGBoost yog dab tsi?

XGBoost yog ib tug scalable thiab raug siv ntawm gradient boosting tshuab thiab nws tau ua pov thawj los thawb cov kev txwv ntawm kev suav lub zog rau boosted ntoo algorithms raws li nws tau tsim thiab tsim rau tib lub hom phiaj ntawm cov qauv kev ua tau zoo thiab kev suav ceev.

XGBoost kwv yees li cas?

XGBoost yog ib qho kev txiav txim siab ntoo-raws li pawg Machine Learning algorithm uas siv lub gradient boosting moj khaum. Hauv kev kwv yees teeb meem nrog rau cov ntaub ntawv tsis tsim nyog (duab, ntawv nyeem, thiab lwm yam) cov khoom siv hluav taws xob tsis zoo yuav ua rau tag nrho lwm cov algorithms lossis cov txheej txheem.

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