2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Muaj zog duality tuav yog thiab tsuas yog tias qhov sib txawv dual qhov sib txawv dual hauv kev ua kom zoo dua, lwm qhov "duality gap" feem ntau tau tshaj tawm, uas yog qhov sib txawv ntawm tus nqi ntawm ib qho kev daws teeb meem thiab tus nqi ntawm ib qho. ua tau tab sis suboptimal iterate rau qhov teeb meem primal. https://en.wikipedia.org › wiki › Duality_gap
Duality gap - Wikipedia
yog 0.
Puas muaj zog dual tuav?
Tshwj xeeb, muaj zog dual tuav rau txhua qhov teeb meem kev ua kom zoo tshaj plaws. with optimal value d⋆=0. Qhov zoo tshaj qhov sib txawv yog p⋆ − d⋆=1.
Puas muaj zog dual ib txwm tuav rau LP?
Kev siv tib lub tswv yim rau nws qhov teeb meem dual, muaj zog duality tuav yog tias qhov teeb meem dual ua tau. Corollary 11.11 Muaj zog duality tuav rau LPs, tshwj tsis yog thaum ob qho tib si primal thiab dual teeb meem ua tsis tau, uas f⋆=∞ thiab g⋆=−∞.
Puas muaj zog dual tuav rau SVM?
Vim li no, muaj zog dual tuav, yog li qhov txiaj ntsig zoo ntawm cov teeb meem primal thiab dual soft-margin SVM yuav sib npaug.
Puas qaug zog dual ib txwm tuav?
Qhov tsis muaj zog dual theorem hais tias lub hom phiaj tus nqi ntawm dual LP ntawm ib qho kev daws teeb meem yog ib txwm ua txhua yam ntawm lub hom phiaj ntawm LP primal ntawm ib qho kev daws teeb meem(saum toj lossis qis dua, nyob ntawm seb nws puas yog qhov teeb meem maximization lossis txo qis).
Pom zoo:
Vim li cas lub zog muaj peev xwm tsis zoo thaum lub zog txaus nyiam?
Qhov no yog tus nqi tsis zoo rau ob qho laj thawj; lub zog ua yeeb yam ntawm lawv yog qhov txaus nyiam, thiab xoom ntawm lub zog muaj peev xwm yog nyob ntawm kev sib cais tsis kawg. Qhov no yog qhov tshwm sim tsis zoo yog tias lub zog ntawm ob tus nqi txaus nyiam(lawv tawm tsam) thiab qhov zoo yog tias nws ntxub (cov nqi zoo sib xws).
Thaum cov tuam txhab tuav pov hwm yuav kev pov hwm los ntawm cov tuam txhab tuav pov hwm ncaj qha?
Hauv cov ntsiab lus yooj yim, kev tuav pov hwm rov qab yog kev tuav pov hwm rau cov tuam txhab tuav pov hwm muab hauv daim ntawv cog lus ntawm kev them nyiaj tsis yog daim ntawv cog lus lav. Feem ntau, tus neeg tuav pov hwm ncaj qha yuav tsum xub them qhov poob thiab tom qab ntawd nrhiav nyiaj rov qab rau qhov kev poob ntawd los ntawmnws cov nyiaj rov qab.
Hauv kev ntsuas qhov muaj zog thiab qhov tsis muaj zog?
Kev ntsuas kev ua tau zoo thiab qhov tsis muaj zog Pab pawg. Ua haujlwm zoo nrog cov neeg siv khoom, cov thawj coj, cov neeg ua haujlwm, thiab lwm tus yog qhov kev txawj ntse. … Adaptability. Koj cov neeg ua haujlwm yuav tsum muaj peev xwm ua tiav lawv txoj haujlwm hauv cov xwm txheej hloov sai.
Thaum twg lub lattice zog muaj zog tshaj?
Lub zog lattice ntawm ionic compounds yog qhov loj. Lub zog lattice ntawm NaCl, piv txwv li, yog 787.3 kJ / mol, uas tsuas yog me ntsis tsawg dua lub zog muab tawm thaum cov pa roj carbon monoxide hlawv. Kev sib cog lus ntawm ions ntawm tus nqi sib txawv yog qhov muaj zog tshaj thaum cov ions me me.
Thaum lub zog dhau los ua qhov tsis muaj zog?
Ib txoj hauv kev uas lub zog dhau los ua qhov tsis muaj zog yog thaum tus thawj coj siv lawv lub peev xwm rov ua haujlwm, tsis yog lub hauv paus ntawm kev muaj tswv yim los daws qhov teeb meem. Yuav ua li cas koj lub zog tuaj yeem dhau los ua qhov tsis muaj zog?
