Inzira ya Gaussiya
Inzira ya Gaussian nuburyo bworoshye, budasanzwe bwo kwerekana imikorere yimikorere ije hamwe nubushakashatsi butazwi.
Incamake
It is prized when data is scarce and knowing how confident the model is matters as much as the prediction itself.
Kwibira cyane
Inzira ya Gaussian (GP) isobanura ikwirakwizwa rishoboka kubikorwa aho guhuza ibipimo byagenwe. Mubisanzwe, ingingo zose zanyuma zashizwe muri GP zikurikira ikwirakwizwa rya Gaussian (bisanzwe). Ugaragaza imikorere isobanutse kandi, cyane cyane, covariance cyangwa imikorere yimikorere ikubiyemo uburyo ibisubizo bisa bigomba kuba byinjira hafi. Nyuma yo gutondekanya amakuru yagaragaye, GP ntigaruka gusa agaciro kavuzwe kuri buri ngingo nshya ahubwo ikwirakwizwa ryuzuye ryo guhanura, itanga intera nicyizere cyo kugereranya intera yaguka kure yamakuru. Guhitamo intangiriro, nka RBF yoroshye (kwaduka kwaduka) cyangwa intangiriro ya Matern, igenzura neza nubunzani. Uku guhuza guhinduka no kuba inyangamugayo bidashidikanywaho bituma GP iba nziza kuri datasets nto hamwe nubushakashatsi buhenze.
Ubushishozi
Ubuhanuzi bugabanuka kumurongo wa algebra kuri materix ya kernel: ibisobanuro byinyuma nibitandukaniro biva muguhindura matrike ya n-by-n-covariance yubatswe kuva mumahugurwa yatanzwe. Iyo inversion igura kurutonde rwa n-cubed time, igabanya GPs naive kumanota ibihumbi. Hyperparameter nkuburebure bwurwego n urusaku urwego rusanzwe ruhujwe no kugereranya amahirwe menshi, mubisanzwe aringaniza amakuru ahuye nicyitegererezo.
Ingaruka z'Ingamba
Igiciro na bije
Ibyemezo byubwubatsi bitwara imikorere nigiciro cyimikorere kumyaka.
Ibyemezo bisobanutse
Ubuhanga bwa tekinike bufasha amakipe guhitamo umurongo ukwiye, ntabwo ari shyashya gusa.
Kugenzura ubuziranenge
Guhitamo neza bya injeniyeri bigabanya ibintu byizewe mubikorwa.
Ejo hazaza h'ibikorwa bya Gaussiya
GP ikomeza kuba moteri inyuma ya optimizasiyo ya Bayesian, uburyo busanzwe bwo guhuza imashini yiga hyperparameter no gukora igerageza neza. Ubushakashatsi bufatika bugaragaza ubunini bwazo binyuze mu kugereranya gake ukoresheje ingingo zitera no gutandukanya ibintu bitagoranye, kandi binyuze mu myigire yimbitse ihuza ibice bikurura imitekerereze hamwe na GP idashidikanywaho. Tegereza imikoreshereze ikura muri robo, kuvumbura siyanse, hamwe nibisobanuro byose aho kalibutifike idashidikanywaho hamwe nubushobozi bwamakuru burenze ubunini bwa dataset.
Gushyira mu bikorwa Isi
Ibyiza bya Bayesian muguhuza hyperparameter yicyitegererezo hamwe nibigeragezo bike
Kwerekana no guhuza amakuru yimiterere nka terrain cyangwa urwego rwumwanda
Moderi ya Surrogate iyobora ubushakashatsi buhenze cyangwa bwubushakashatsi
Ibihe-byateganijwe byerekana aho intera ikenewe ikenewe
Ingaruka & Kurinda
Gutezimbere igipimo kimwe gishobora guhisha intege nke za sisitemu.
Ibikorwa Remezo no kubungabunga akenshi usanga bidahabwa agaciro.
Icyuho cyumutekano no kwitegereza birashobora kwiyongera uko sisitemu igenda igorana.
Igishushanyo mbonera
Sobanura ubukererwe, ubuziranenge, nigiciro cyibiciro mbere yo kubishyira mubikorwa.
Ibipimo byerekana umutwaro ufatika hamwe namakuru yimiterere.
Gukurikirana ibikoresho kubikosa, drift, ningaruka zabakoresha.
Tegura inzira yo gusubiza ibyabaye mbere yo gupima.
Komeza Ubushakashatsi
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Ubuyobozi bukurikira
Gaussian
Ibibazo bikunze kubazwa
What is Gaussian Processes?
Inzira ya Gaussian nuburyo bworoshye, budasanzwe bwo kwerekana imikorere yimikorere ije hamwe nubushakashatsi butazwi. Ihabwa agaciro mugihe amakuru ari make no kumenya uburyo icyitegererezo gifite akamaro nkibyahanuwe ubwabyo.
Inzira ya Gaussian isobanura ikwirakwizwa rishoboka niki?
GP ishyira igabanywa hejuru yimirimo yose, bityo rero ingingo zose zanyuma zifatanije ni Gaussian.
Ni izihe nyungu nyamukuru GP itanga irenze guhanura?
GP isubiza ibyuzuye byo gukwirakwiza, bityo ukabona intera intera yaguka aho amakuru ari make.
Ni uruhe ruhare intungamubiri (imikorere ya covariance) igira muri GP?
Intangiriro isobanura isano iri hagati yingingo, igenzura imitungo nkuburinganire nuburebure bwimikorere yibikorwa.
Kuki inzira zisanzwe za Gaussian zirwana na datasets nini cyane?
Inyuma nyayo ikenera guhinduranya matrike ya n-by-n covariance, igapima kubice n'umubare w'amanota.
Nigute GP hyperparameter nkuburebure busanzwe bwatoranijwe?
Kugabanya amahirwe menshi yo gucuruza guhuza amakuru arikitegererezo cyo gushiraho hyperparameter.