2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cosine zoo sib xws feem ntau yog siv los ua qhov ntsuas rau ntsuas qhov deb thaum qhov loj ntawm vectors tsis muaj teeb meem. Qhov no tshwm sim piv txwv li thaum ua haujlwm nrog cov ntaub ntawv cov ntaub ntawv sawv cev los ntawm cov lus suav.
Thaum twg kuv yuav tsum siv cosine zoo sib xws?
Cosine zoo sib xws ntsuas qhov zoo sib xws ntawm ob lub vectors ntawm qhov chaw khoom sab hauv. Nws yog ntsuas los ntawm lub cosine ntawm lub kaum sab xis ntawm ob vectors thiab txiav txim siab seb ob vectors yog taw tes nyob rau hauv roughly tib txoj kev. Nws feem ntau yog siv los ntsuas cov ntaub ntawv zoo sib xws hauv ntawv tshuaj ntsuam.
Vim li cas siv cosine zoo sib xws hloov ntawm Euclidean nrug?
Qhov zoo sib xws ntawm cosine yog qhov zoo vim tias txawm tias ob daim ntawv zoo sib xws nyob deb ntawm Euclidean deb vim qhov loj me (xws li, lo lus 'kab cij' tshwm 50 zaug hauv ib daim ntawv thiab 10 zaug hauv lwm qhov) lawv tuaj yeem tseem muaj ib lub kaum me me ntawm lawv. Lub kaum sab xis me dua, siab dua qhov zoo sib xws.
Dab tsi yog qhov txawv ntawm cosine zoo sib xws thiab Euclidean nrug?
Nyob rau hauv kab lus no, peb tau kawm cov lus txhais ntawm Euclidean nrug thiab cosine zoo sib xws. Lub Euclidean nrug sib raug rau tus L2-tus qauv ntawm qhov sib txawv ntawm vectors. Cov cosine zoo sib xws yog proportional rau cov khoom dot ntawm ob vectors thiab inversely proportional rau cov khoom ntawm lawv magnitudes.
Dab tsi yog qhov sib txawv ntawm cosine zoo sib xws thiab cosine nrug?
Feem ntau, tib neeg siv cov cosine zoo sib xws raws li kev ntsuas qhov sib xws ntawm vectors. Tam sim no, qhov kev ncua deb tuaj yeem txhais tau tias yog 1-cos_similarity. Qhov kev xav hauv qab no yog tias 2 vectors zoo ib yam ces qhov zoo sib xws yog 1 (lub kaum=0) thiab yog li, qhov deb yog 0 (1-1=0).
Pom zoo:
Thaum twg siv i.e. thiab thaum twg siv xws li?
I.e. yog ib qho luv luv rau kab lus id est, uas txhais tau tias "uas yog." I.e. yog siv los rov hais dua ib yam dab tsi uas tau hais yav dhau los txhawm rau kom meej nws lub ntsiab lus. E.g. luv luv rau exempli gratia, uas txhais tau tias "
Thaum twg yog qhov kev xav zoo sib xws?
Nyob rau hauv txoj kev tshawb nrhiav cov teeb meem hauv kev txawj ntse, kev ua haujlwm heuristic tau hais tias ua kom zoo ib yam, lossis monotone, yog tias nws qhov kwv yees ib txwm tsawg dua lossis sib npaug ntawm qhov kwv yees nyob deb ntawm ib tus neeg nyob sib ze vertex mus rau lub hom phiaj, ntxiv rau tus nqi mus txog tus neeg nyob ze.
Thaum twg ob daim duab plaub zoo sib xws?
Rau ob daim duab plaub kom zoo sib xws, lawv ob sab yuav tsum tau proportional (daim ntawv sib npaug). Qhov piv ntawm ob sab ntev yuav tsum sib npaug ntawm qhov sib piv ntawm ob sab luv. Txawm li cas los xij, sab laug piv hauv peb qhov kev faib ua feem txo qis.
Puas yog kev sib tw tsis sib xws tib yam li kev sib xyaw ua ke?
Kev txwv tsis pub sib tw yog qee zaum xav tias yog tshwj xeeb ntawm kev sib xyaw inhibition. Hauv kev sib xyaw inhibition, tus inhibitor khi rau ib qho chaw allosteric, piv txwv li ib qhov chaw sib txawv ntawm qhov chaw nquag uas lub substrate khi.
Puas cov sib tov sib xyaw ua ke muaj cov khoom sib xws?
Ib homogeneous sib tov yog sib tov nyob rau hauv uas muaj pes tsawg leeg yog uniform thoob plaws qhov sib tov .. Qee cov ntaub ntawv hais ntxiv tias cov tshuaj lom neeg tsis tuaj yeem muab cais rau hauv nws cov ntsiab lus los ntawm kev sib cais ntawm lub cev, piv txwv li, tsis muaj kev cuam tshuam tshuaj lom neeg.
