Ụdị Ọdịbendị dabere na akara
Ụdị mmepụta ihe dabere na akara na-emepụta data site n'ịmụ gradient nke nkesa data - ntụzịaka na-eme ka nlele mkpọtụ ọ bụla yie ka ezigbo data.
Nchịkọta
This score-function view unifies diffusion models with stochastic differential equations and underpins many modern image generators.
Ime miri emi
Kama imepụta ihe gbasara omume ozugbo, ụdị ndị dabere na akara na-amụta akara: gradient nke njupụta nke puru omume log n'ihe gbasara ntinye. Ịmara ụzọ isi kpatụ ihe nlele iji mee ka ohere ya dị elu ezuola ịmepụta data ọhụrụ. Ọrụ Yang Song na Stefano Ermon 2019 zụrụ netwọk iji tụọ akara a n'ọtụtụ ọkwa mkpọtụ site na iji denoising akara dakọtara, wee mepụta sample na Langevin dynamics - na-aga n'ihu akara ugboro ugboro na-agbakwunye ntakịrị mkpọtụ. Akwụkwọ akara SDE ha nke 2021 gosipụtara na mgbasa na ụdị dabere na akara bụ ihu abụọ nke otu usoro na-aga n'ihu nke stochastic equation kọwara. N'ụzọ dị mkpa, SDE ọ bụla nwere ihe nrịbama 'probability flow' ODE na-ekerịta otu akụkụ, na-enye ohere ọ bụla yana nlele ngwa ngwa.
Nghọta nka nka
Ịtụle akara nke data dị ọcha ozugbo siri ike ebe data dị ntakịrị, ya mere a zụrụ ihe nlereanya ahụ na data nke ụda Gaussian na-emegharị na ọtụtụ akpịrịkpa. Ịkwụsị akara ndakọrịta na-enye ihe mgbaru ọsọ traktị: akara nke nkesa mkpọtụ na-eme ka ụda mkpọtụ kewara site na mgbanwe ụda, ya mere ịkọ mkpọtụ na ịkọ akara bụ n'ezie otu ihe ahụ. Sampling na-edozi oge SDE (ma ọ bụ ihe puru omume-erugharị ODE) na-amalite site na mkpọtụ Gaussian dị ọcha.
Mmetụta atụmatụ
Ọsọ na ọnụ ọgụgụ
Visual AI nwere ike megharịa nyocha, nchọpụta na mkpado ọrụ n'ọtụtụ.
Mee nhọrọ
Otu ndị na-emepụta ihe nwere ike imepụta echiche ngwa ngwa site na ngbanwe akwụkwọ ntuziaka ole na ole.
Team na usoro ọrụ
Ọrụ nwere ike iji onyonyo na akara vidiyo siri ike ịhazi.
Ọdịnihu nke Ụdị Ọdịbendị dabere na akara
Usoro akara-SDE bụ injin usoro ihe n'azụ ọtụtụ ọganihu AI na-emepụta. Ndị na-edozi ọnụọgụgụ ngwa ngwa, usoro mkpọtụ ka mma, yana ihe nwere ike ime ODE na-enye ọgbọ dị nso na nleba anya nke ọma. Otu echiche dabara adaba na-agbasa n'ofe onyonyo n'ime audio, molecular na protein nhazi nhazi, igwe ojii, na ịme anwansị sayensị, ebe nkwụsi ike na ụdị dabara adaba na-ewulite ozugbo na ntọala ndị a na-aga n'ihu na-aga n'ihu iji mee ka ọgbọ na-agbada ruo njuaka nke usoro.
Mmejuputa n'ezie n'ụwa
Netwọk Score Noise-Conditional Score Networks (NCSN) na-ekepụta ihu foto dị adị site n'ịgbaso akara akara mmụta mmụta site na ike Langevin.
Nrụgharị onyonyo ahụike, dị ka MRI gbagoro agbagoro, ebe akara mmụta a na-eme dị ka tupu dejupụta data nyocha na-enweghị atụ.
Ọgbọ nhazi molecular na protein n'ime nchọpụta ọgwụ, na-eme ka nhazi atọm 3D nwere mgbasa dabere na akara.
Ngwakọta ebili mmiri ọdịyo ebe ụdị akara na-ekwu maka okwu ma ọ bụ egwu dị ọcha, dị ka ọ dị na vocoders dabere na mgbasa ozi.
Ihe ize ndụ & okporo ụzọ nche
Ikike onyonyo na nkwenye nwere ike bụrụ ihe egwu dị n'iwu ma ọ bụrụ na edoghị anya.
Ọrụ nlereanya nwere ike ịdịgasị iche n'ofe ọkụ, igwe mmadụ, na gburugburu.
Enwere ike ghara ịhụ ihe dị mma ma ọ bụrụ na enyochaghị oke ntụkwasị obi.
Map mmejuputa
Kọwaa ụkpụrụ nnabata maka nkenke, icheta, na ụgwọ njehie.
Nwalee na data dabara na ọnọdụ mmepụta n'ezie.
Tinye nyocha mmadụ maka obere obi ike ma ọ bụ amụma mmetụta dị elu.
Sochie ihe nlere anya wee megharịa ka emechara mgbanwe igwefoto ma ọ bụ dataset.
Nọgide na-eme nchọpụta
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Ntuziaka na-esote
Ụdị dabere na ike
Ajụjụ a na-ajụkarị
What is Score-Based Generative Models?
Ụdị mmepụta ihe dabere na akara na-emepụta data site n'ịmụ gradient nke nkesa data - ntụzịaka na-eme ka nlele mkpọtụ ọ bụla yie ka ezigbo data. Nlele ọrụ akara a na-ejikọ ụdị mgbasa ozi yana nha nha dị iche iche stochastic ma na-akwado ọtụtụ ndị na-emepụta ihe onyonyo ọgbara ọhụrụ.
Kedu ihe bụ 'akara' nke ụdị ndị a na-amụta?
Akara a bụ gradient nke njupụta data log gbasara ntinye - ọ na-atụ aka na ntụzịaka na-abawanye ohere nlele.
Kedu ihe kpatara eji zụọ ụdị dabere na akara na data mebiri site na mkpọtụ n'ọtụtụ akpịrịkpa?
Na mpaghara obere njupụta ezi akara na-akọwaghị nke ọma; data na-agbagwoju anya nwere ọkwa mkpọtụ dị iche iche na-eme ka akara dakọtara traktị ebe niile.
Kedu usoro nlere anya ka ụdị dabere na akara mmalite jiri wepụta data?
Langevin dynamics na-ebugharị ihe nlele ugboro ugboro na ntụzịaka akara wee na-etinye obere mkpọtụ, jiri nwayọ na-agbanwe mkpọtụ enweghị usoro ka ọ bụrụ data ezi uche dị na ya.
Kedu njikọ dị mkpa ka akwụkwọ 2021 akara-SDE hibere?
Abụ et al. ụdị ịgbasa n'otu na akara gbadoro ụkwụ n'okpuru usoro nha anya stochastic dị iche, yana ODE nwere ike ime mkpebi dabara adaba.
Kedu ka ịkọ mkpọtụ siri metụta ịkọ akara n'ịkatọ nha nha?
Ịkwụsị akara dakọtara na-egosi akara ahụ hà nhata ụda na-adịghị mma nke mgbanwe ụda kewara, na-eme amụma mkpọtụ na amụma akara nke ọma otu ebumnobi ahụ.