Incamake
Nesterov yihuta ya Gradient (NAG) nuburyo bwubwenge bwimbaraga zireba imbere mbere yo kubara gradient, ikayiha gukosora-imbere. Bikunze guhuza byihuse kandi bihamye kuruta imbaraga za kera.
Nesterov Yihuta Gradient yicaye mubikoresho bya AI. Iyo ubisobanukiwe, izindi ngingo za AI zoroha gusuzuma no kugereranya.
Kwibira cyane
Umuvuduko wa classique ubara gradient kumwanya uriho, hanyuma ukongeraho umuvuduko wuzuye. Ubushishozi bwa Nesterov, buva mu bikorwa bya Yurii Nesterov mu 1983 ku bijyanye no kwihutisha imiyoboro ya convex, ni ukubanza gutera intambwe yihuta kugera ku kureba imbere no gusuzuma icyiciro kiriho. Ibi bituma optimizer iteganya aho umuvuduko uyitwara hanyuma ugashyiraho ikosora mbere yo kurasa, nkuwiruka ubona umurongo imbere kandi ugahindura hakiri kare kuruta nyuma. Kubibazo byoroshye convex uburyo bwa Nesterov bugera ku gipimo cyiza cyo guhuza gahunda ya 1 / k ^ 2 mu mubare wintambwe, iterambere ryagaragaye hejuru yikigereranyo cya 1 / k. Mu myigire yimbitse itangwa nkuburyo bworoshye mubice byinshi kandi akenshi bitanga umusaruro byihuse, imyitozo idahungabana kuruta imbaraga zisanzwe kuri coefficient imwe.
Ubushishozi
Itandukaniro ryibanze niho hasuzumwa icyiciro. Umuvuduko usanzwe ukoresha igipimo cyibipimo bigezweho; Nesterov arabisuzuma kubireba-imbere imyanya ibice ukuyemo igipimo cyo kwiga inshuro beta inshuro umuvuduko. Iri gereranya ryateganijwe ryongeramo neza ikosora rijyanye nimpinduka ya gradient, igabanuka hejuru ya minima yagoramye. Mubikorwa byimyitozo ishyira mubikorwa ivugururwa rya algebraically kuburyo igiciro cyinyongera hejuru yumuvuduko usanzwe ari gito.
Kumenya Nesterov Yihuta
Nesterov yihuta ya Gradient (NAG) nuburyo bwubwenge bwimbaraga zireba imbere mbere yo kubara gradient, ikayiha gukosora-imbere. Bikunze guhuza byihuse kandi bihamye kuruta imbaraga za kera. Nesterov Yihuta Gradient yicaye mubikoresho bya AI. Iyo ubisobanukiwe, izindi ngingo za AI zoroha gusuzuma no kugereranya. Kugirango wubake byimbitse, fata Nesterov yihuta ya Gradient nkicyitegererezo gikora, ntabwo ari ikintu kimwe: gusobanura ibyagezweho, gusobanura ibitekerezo, no gutandukanya ibyo sisitemu ishobora gukora byizewe nibisaba guca imanza zinzobere.
Mu myitozo, amakipe akomeye akoresha Nesterov yihuta ya Gradient yubaka icyitegererezo gikomeye cyambere, hanyuma ushushanye izo moderi kubibuza umusaruro. Bandika ibipimo ngenderwaho byerekana intsinzi, bagerageza kurwanya amakuru afatika hamwe nakazi keza, kandi bagasubiramo bashingiye kubikorwa byagaragaye ko batsinzwe aho gutsinda inshuro imwe. Aha niho imyumvire yubumenyi ihinduka mubushobozi burambye kubicuruzwa, politiki, nibikorwa.
Iragufasha gutandukanya ibyifuzo bya tekiniki bisobanutse nururimi rwo kwamamaza. Igihe kimwe, Amakipe atandukanye arashobora gukoresha ijambo rimwe muburyo butandukanye, sobanura intera hakiri kare. Uburyo bukomeye cyane ni uguhuza umuvuduko wikigereranyo hamwe na disipuline yimiyoborere: kuyobora abaderevu, gufata ibimenyetso, gutangaza ibyemezo byicyemezo, no gukomeza kuvugurura uburyo bwo kwirinda nkimyitwarire yicyitegererezo, ibyo abakoresha bategereje, nibisabwa n'amategeko bigenda bihinduka.
Ingaruka z'Ingamba
Iragufasha gutandukanya ibyifuzo bya tekiniki bisobanutse nururimi rwo kwamamaza.
Iragufasha gutandukanya ibyifuzo bya tekiniki bisobanutse nururimi rwo kwamamaza. Mubikorwa byujuje ubuziranenge, ibi bihindurwa mumategeko agenga imikorere, imipaka nyirubwite, hamwe n'imihango yo gusubiramo kenshi kugirango amakipe ashobore kwigirira ikizere aho gupima ibidasobanutse.
Urashobora kubaza ibibazo byiza byo gushyira mubikorwa mbere yo gukoresha amafaranga cyangwa igihe.
Urashobora kubaza ibibazo byiza byo gushyira mubikorwa mbere yo gukoresha amafaranga cyangwa igihe. Mubikorwa byujuje ubuziranenge, ibi bihindurwa mumategeko agenga imikorere, imipaka nyirubwite, hamwe n'imihango yo gusubiramo kenshi kugirango amakipe ashobore kwigirira ikizere aho gupima ibidasobanutse.
Amakipe afite imyumvire isangiwe akora ibicuruzwa byiza, politiki, nibyemezo byo kwiga.
Amakipe afite imyumvire isangiwe akora ibicuruzwa byiza, politiki, nibyemezo byo kwiga. Mubikorwa byujuje ubuziranenge, ibi bihindurwa mumategeko agenga imikorere, imipaka nyirubwite, hamwe n'imihango yo gusubiramo kenshi kugirango amakipe ashobore kwigirira ikizere aho gupima ibidasobanutse.
Gushyira mu bikorwa Isi
Gushoboza nesterov = Ibendera ryukuri muri PyTorch cyangwa TensorFlow SGD kugirango imyitozo yihuse, yoroshye.
Kwihutisha guhuza ibibazo byoroshye convex nkibinini binini byo gusubira inyuma.
Kugabanya kurenza urugero no kunyeganyega mugihe uhugura imiyoboro yimbitse hafi ya minima ityaye.
Guha imbaraga Nadam optimizer, yongeraho Nesterov kureba-imbere kuri Adam.
Uburyo bwo Gushyira mu bikorwa
Nesterov Yihuta Gradient mubikorwa
Gushoboza nesterov = Ibendera ryukuri muri PyTorch cyangwa TensorFlow SGD kugirango imyitozo yihuse, yoroshye.
Gushoboza nesterov = Ibendera ryukuri muri PyTorch cyangwa TensorFlow SGD kugirango byihute, byoroheje Amahugurwa Amakipe akunze kubona ibisubizo byiza iyo asobanuye ibipimo ngenderwaho byimbere imbere, agakomeza inzira yo kuzamura abantu kubibazo byimbitse, kandi akurikirana inyungu zibyara umusaruro nibiciro byamakosa mugihe runaka.
Nesterov Yihuta Gradient mubikorwa
Kwihutisha guhuza ibibazo byoroshye convex nkibinini binini byo gusubira inyuma.
Kwihutisha guhuza ibibazo byoroshye bya convex nkibinini binini byo gusubira inyuma Amakipe ubusanzwe abona ibisubizo byiza iyo asobanuye ibipimo byujuje ubuziranenge imbere, agakomeza inzira yo kuzamura abantu kubibazo, kandi akurikirana inyungu zibyara umusaruro hamwe nibiciro byamakosa mugihe runaka.
Nesterov Yihuta Gradient mubikorwa
Kugabanya kurenza urugero no kunyeganyega mugihe uhugura imiyoboro yimbitse hafi ya minima ityaye.
Kugabanya ibicuruzwa birenze urugero no guhungabana mugihe uhugura imiyoboro yimbitse hafi ya minima ikarishye Amakipe akunze kubona umusaruro mwiza mugihe asobanura ibipimo ngenderwaho byimbere, agakomeza inzira yo kuzamura abantu kubibazo, kandi akurikirana inyungu zibyara umusaruro hamwe nibiciro byamakosa mugihe runaka.
Nesterov Yihuta Gradient mubikorwa
Guha imbaraga Nadam optimizer, yongeraho Nesterov kureba-imbere kuri Adam.
Guha imbaraga optimizer ya Nadam, ikongeramo Nesterov kureba imbere yamakipe ya Adam ubusanzwe abona ibisubizo byiza mugihe basobanuye ibipimo ngenderwaho byimbere, bagakomeza inzira yo kuzamura abantu kubibazo byimbere, kandi bagakurikirana inyungu zibyara umusaruro nibiciro byigihe.
Ingaruka & Kurinda
Amakipe atandukanye arashobora gukoresha ijambo rimwe muburyo butandukanye, sobanura intera hakiri kare.
Ibipimo birashobora kugaragara bikomeye mugihe imikorere-yisi-itaringaniye.
Kwirengagiza ubuziranenge bwamakuru na gahunda yo gusuzuma akenshi bitanga ibisubizo byoroshye.
Igishushanyo mbonera
Tangira nururimi rusobanutse rwibisubizo ukeneye.
Tangira nururimi rusobanutse rwibisubizo ukeneye. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.
Toranya intsinzi imwe hamwe nuburyo bumwe bwo gutsindwa mbere yo kwipimisha.
Toranya intsinzi imwe hamwe nuburyo bumwe bwo gutsindwa mbere yo kwipimisha. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.
Koresha umuderevu muto hamwe namakuru ahagarariye, ntabwo ari demo yashizweho.
Koresha umuderevu muto hamwe namakuru ahagarariye, ntabwo ari demo yashizweho. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.
Inyandiko aho Nesterov yihuta Gradient ifasha kandi nuburyo bworoshye bworoshye.
Inyandiko aho Nesterov yihuta Gradient ifasha kandi nuburyo bworoshye bworoshye. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.