Incamake
Icyiciro cya kabiri cyo gutezimbere gikoresha amakuru yagoramye (matrike ya Hessian ya kabiri ikomoka) kugirango itere intambwe nziza igana byibuze, ntabwo ihanamye. Irashobora guhurira muburyo butangaje cyane kuruta kugabanuka kumanuka, ariko ikiguzi cyo kubara kugabanuka bituma bigora gupima.
Icyiciro cya kabiri Optimisiyoneri hamwe na Newton Methods nuburyo bwububiko bwa tekiniki bugira ingaruka kumiterere yicyitegererezo, igiciro cyibikorwa remezo, ubukererwe, no kwizerwa mubipimo.
Kwibira cyane
Gradient descente izi gusa ahahanamye kurubu, bityo itoranya intambwe ihamye cyangwa intoki zingana nintambwe kandi yizeye ibyiza. Uburyo bwa Newton burakomeza: burareba kandi uburyo umusozi uhinduka (kugabanuka), wafashwe na Hessian, matrix yibikomoka ku gice cya kabiri cyose. Ivugurura rigwiza Hessian ihindagurika na gradient, ihita ikuraho buri cyerekezo ikamanuka hafi yuburinganire bwa hafi ya quadratic. Kubakure ya quadratique neza, uburyo bwa Newton bugera hepfo murwego rumwe. Gufata ni ubugome: icyitegererezo gifite ibipimo bya N gifite N-by-N Hessian, kubika no guhinduranya bisaba hafi ububiko bwa N-kare na compte ya N-cubed. Kuri miliyari-ibipimo byimikorere bidashoboka, niyo mpamvu abimenyereza bakoresha ibigereranyo bihendutse.
Ubushishozi
Ivugurura ryibanze rya Newton ni x_new = x - H_ibihe byikurikiranya, aho H ni Hessian. Uburyo bwa Quasi-Newton nka BFGS na L-BFGS birinda kubara H muburyo bwubaka igereranya ryimikorere yinyuma iva kubitandukanya bikurikirana. L-BFGS ibika gusa icyiciro cya nyuma cya gradient na intambwe aho kuba matrix yuzuye, guca kwibuka kuva N-kwaduka kugeza kuri bike bya N mugihe ukomeza kwihuta kwinshi.
Kumenya Icyiciro cya kabiri Optimisiyoneri hamwe nuburyo bwa Newton
Icyiciro cya kabiri cyo gutezimbere gikoresha amakuru yagoramye (matrike ya Hessian ya kabiri ikomoka) kugirango itere intambwe nziza igana byibuze, ntabwo ihanamye. Irashobora guhurira muburyo butangaje cyane ugereranije no kugabanuka kumanuka, ariko ikiguzi cyo kubara kugabanuka bituma bigora gupima. Icyiciro cya kabiri Optimisiyoneri hamwe na Newton Methods nuburyo bwububiko bwa tekiniki bugira ingaruka kumiterere yicyitegererezo, igiciro cyibikorwa remezo, ubukererwe, no kwizerwa mubipimo. Kugirango wubake byimbitse, fata uburyo bwa kabiri Optimisation na Newton Methods nkicyitegererezo gikora, ntabwo ari ikintu kimwe: gusobanura ibyagezweho, gusobanura ibitekerezo, no gutandukanya ibyo sisitemu ishobora gukora byizewe nibisaba guca imanza zinzobere.
Mubimenyerezo, amatsinda akomeye akoresha Itondekanya rya kabiri rya Optimisiyoneri hamwe na Newton Methods atezimbere ubwubatsi, amakuru, hamwe nibikorwa remezo birwanya kwizerwa nigiciro. 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.
Ibyemezo byubwubatsi bitwara imikorere nigiciro cyimikorere kumyaka. Mugihe kimwe, Guhindura igipimo kimwe gishobora guhisha intege nke za sisitemu. 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
Ibyemezo byubwubatsi bitwara imikorere nigiciro cyimikorere kumyaka.
Ibyemezo byubwubatsi bitwara imikorere nigiciro cyimikorere kumyaka. Mubikorwa byujuje ubuziranenge, ibi bihindurwa mumategeko agenga imikorere, imipaka nyirubwite, hamwe n'imihango yo gusubiramo kenshi kugirango amakipe ashobore kwigirira ikizere aho gupima ibidasobanutse.
Ubuhanga bwa tekinike bufasha amakipe guhitamo umurongo ukwiye, ntabwo ari shyashya gusa.
Ubuhanga bwa tekinike bufasha amakipe guhitamo umurongo ukwiye, ntabwo ari shyashya gusa. Mubikorwa byujuje ubuziranenge, ibi bihindurwa mumategeko agenga imikorere, imipaka nyirubwite, hamwe n'imihango yo gusubiramo kenshi kugirango amakipe ashobore kwigirira ikizere aho gupima ibidasobanutse.
Guhitamo neza bya injeniyeri bigabanya ibintu byizewe mubikorwa.
Guhitamo neza bya injeniyeri bigabanya ibintu byizewe mubikorwa. 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
L-BFGS ikwiranye no gusubira inyuma hamwe nizindi moderi za convex muri scikit-wige, aho ikunze gukubita hasi ya gradient kumanuka kuri dataseti nto kandi ziciriritse
Guhindura bundle mukubaka 3D hamwe na SLAM, aho Gauss-Newton na Levenberg-Marquardt batunganya kamera yerekana imyanya.
Guhugura utuntu duto twa fiziki tumenyesheje imiyoboro aho L-BFGS igera kubintu Adamu arwana no kugera
Shampoo na K-FAC byihutisha amahugurwa manini yo kwiga yimbitse ugereranije imiterere ya Hessian
Uburyo bwo Gushyira mu bikorwa
Icyiciro cya kabiri Optimisiyoneri hamwe nuburyo bwa Newton mubikorwa
L-BFGS ikwiranye no gusubira inyuma hamwe nubundi buryo bwa convex muri scikit-wige, aho akenshi ikubita hasi ya gradient descente kuri datasets ntoya.
L.
Icyiciro cya kabiri Optimisiyoneri hamwe nuburyo bwa Newton mubikorwa
Guhindura bundle mukubaka 3D hamwe na SLAM, aho Gauss-Newton na Levenberg-Marquardt batunganya kamera yerekana imyanya.
Guhindura bundle mukwiyubaka kwa 3D hamwe na SLAM, aho Gauss-Newton na Levenberg-Marquardt batunganya kamera yerekana kamera hamwe nu mwanya wamakipe Amakipe akunze kubona ibisubizo byiza iyo asobanuye ibipimo ngenderwaho byimbere, agakomeza inzira yo kuzamura abantu kubibazo, kandi akurikirana inyungu zibyara umusaruro hamwe nibiciro byamakosa mugihe runaka.
Icyiciro cya kabiri Optimisiyoneri hamwe nuburyo bwa Newton mubikorwa
Guhugura utuntu duto twa fiziki-yamenyeshejwe imiyoboro yimitsi aho L-BFGS igera kubintu byukuri Adamu arwanira kugera.
Guhugura uduce duto twa fiziki tumenyesheje imiyoboro ya L-BFGS igera ku buryo busobanutse neza ko Adamu arwanira kugera mu makipe ubusanzwe abona umusaruro ushimishije iyo asobanuye ibipimo ngenderwaho byimbere, agakomeza inzira yo kuzamura abantu kubibazo, kandi akurikirana inyungu zibyara umusaruro hamwe nibiciro byamakosa mugihe runaka.
Icyiciro cya kabiri Optimisiyoneri hamwe nuburyo bwa Newton mubikorwa
Shampoo na K-FAC byihutisha amahugurwa manini yo kwiga yimbitse ugereranije imiterere ya Hessian.
Shampoo na K-FAC byihutisha amahugurwa manini yo kwiga yimbitse ugereranije imiterere ya Hessian Amakipe akunze kubona umusaruro ushimishije mugihe asobanura ibipimo ngenderwaho byimbere, agakomeza inzira yo kuzamura abantu kubibazo, kandi akurikirana inyungu zibyara umusaruro hamwe nibiciro byamakosa mugihe runaka.
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.
Sobanura ubukererwe, ubuziranenge, nigiciro cyibiciro mbere yo kubishyira mubikorwa. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.
Ibipimo byerekana umutwaro ufatika hamwe namakuru yimiterere.
Ibipimo byerekana umutwaro ufatika hamwe namakuru yimiterere. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.
Gukurikirana ibikoresho kubikosa, drift, ningaruka zabakoresha.
Gukurikirana ibikoresho kubikosa, drift, ningaruka zabakoresha. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.
Tegura inzira yo gusubiza ibyabaye mbere yo gupima.
Tegura inzira yo gusubiza ibyabaye mbere yo gupima. Fata buri ntambwe nk irembo ryibimenyetso: niba ibipimo bitujujwe, hagarika kuzenguruka, funga icyuho, hanyuma noneho wagure imikoreshereze.