Ukuthatha Isampula Okuhleliwe kanye Nokuchema Kokuvezwa
Ukuchema kokuchayeka igebe elivelayo lapho imodeli eqeqeshelwe kuphela iziqalo eziphelele kufanele, ngokucabangela, imise emiphumeleni yayo engaphelele.
Uhlolojikelele
Scheduled sampling is a curriculum that gradually closes that gap.
I-Deep Dive
Amamodeli aqeqeshwe ngokuphoqelela kothisha ake abone amathokheni eqiniso eliyisisekelo njengomongo, kodwa ngesikhathi sesizukulwane abuyisela okwawo ukubikezela. Uma iphutha langaphambi kwesikhathi lenza imodeli esimweni engakaze ihlangane naso ngesikhathi sokuqeqeshwa, amaphutha angaba neqhwa, imodi yokwehluleka ebizwa ngokuthi i-exposure bias. Ukusampula okuhleliwe, okwethulwa u-Bengio nozakwabo ngo-2015, kubhekana nalokhu ngokuphenya uhlamvu lwemali esinyathelweni ngasinye sokukhipha amakhodi ngesikhathi sokuqeqeshwa: okungenzeka ukuthi siphakela ithokheni yeqiniso (ukuphoqelela kukathisha) futhi ngaphandle kwalokho siphakela imodeli ngokwayo isibikezelo esiyisampula. Amathuba okusebenzisa iqiniso eliyisisekelo aqala eduze nokukodwa futhi abole ngenxa yokuqeqeshwa ngeshejuli (eqondile, ecacile, noma ephambene ne-sigmoid), ngakho imodeli ivezwa kancane kancane emiphumeleni yayo futhi ifunde ukululama emaphutheni ayo.
I-Technical Insight
Esinyathelweni t imodeli isampula okuguquguqukayo kwe-Bernoulli okungenzeka ukuthi i-epsilon_i yokukhetha ithokheni yegolide; I-epsilon_i iyabola njengoba ukuqeqeshwa kuqhubeka. Ubuqili buwukuthi ukuphakela amathokheni amasampula kwenza inhloso ichele futhi amasampula ahlukene angahlukani, ngakho-ke ama-gradient awahambi ngokuhlanzekile kuthokheni ye-fed-back. Okuhlukile kusebenzisa i-Gumbel-softmax eqondile noma ukuphumula okuhlukanisekayo ukuze kuncishiswe lokhu, nezindlela zeleveli yokulandelana zithuthukisa imethrikhi efana ne-BLEU ngokuqondile.
I-Strategic Impact
Izindleko kanye nesabelomali
Izinqumo zezakhiwo ziqhuba ukusebenza kanye nezindleko zokusebenza iminyaka.
Izinqumo ezicacile
Imfundo yobuchwepheshe isiza amaqembu ukuthi akhethe isitaki esifanele, hhayi nje esisha.
Ukulawulwa kwekhwalithi
Izinketho ezingcono zobunjiniyela zinciphisa izehlakalo ezinokwethenjelwa ekukhiqizeni.
Ikusasa Lokusampula Okuhleliwe kanye Nokuchema Nokuchayeka
Kumamodeli amakhulu olimi lwe-Transformer umthelela ongokoqobo wokuchema kokuchayeka kuyaphikiswana ngakho, njengoba idatha enkulu nesikali kuyayidambisa, nezindlela ezifana ne-RLHF zilungisa kabusha ukuziphatha kokukhiqiza ngokuqondile. Noma kunjalo, amasampula ahleliwe kanye nenzalo yawo ahlala efanelekile kumamodeli amancane, ukukhiqiza okuhlelekile, nemisebenzi enezidingo ezinembayo eziqinile. Umsebenzi wesikhathi esizayo uhlanganisa ukuchayeka kwekharikhulamu, izinhloso zokulandelana kwesitayela sokuqinisa, kanye nokuqeqeshwa kobungozi obuncane ukuze kuhambisane nendlela amamodeli aqeqeshwa ngayo nendlela anquma ngayo.
Ukuqaliswa Komhlaba Wangempela
Ukuqeqesha imodeli yamagama-ncazo wesithombe ngamasampula ahleliwe ukuze ifunde ukuqhubeka kahle ngemva kwegama elingaphelele elibikezelwe
Ukuwohloka kwamathuba okuphoqa uthisha ngeshejuli ephambene-sigmoid kusistimu yokuhumusha yomshini we-neural
Ukuhlonza i-chatbot ekhukhuleka ibe yizihibe ezingahlangene njengophawu lokuchayeka oluvela ekuphoqeni okumsulwa
Ukuqhathanisa izikolo ze-BLEU zesifinyezo esiqeqeshelwe uthisha ogcwele ukuphoqa kuqhathaniswa noqeqeshwe ngamasampula ahleliwe
Izingozi & Guardrails
Ukuthuthukisa ibhentshimakhi eyodwa kungafihla ubuthakathaka obubanzi besistimu.
Izindleko zengqalasizinda nezokulungisa zivame ukubukelwa phansi.
Izikhala zokuphepha nokubonakala zingakhula njengoba izinhlelo ziba nzima kakhulu.
Ukuqalisa Umhlahlandlela
Chaza ukubambezeleka, ikhwalithi, nezindleko ezihlosiwe ngaphambi kokuqaliswa.
Ibhentshimakhi ngaphansi komthwalo wangempela nezimo zedatha.
Ukuqapha amathuluzi amaphutha, ukukhukhuleka, nomthelela wabasebenzisi.
Lungiselela izindlela zokuhlehlisa nezigameko ngaphambi kokukala.
Qhubeka Uhlole
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Umhlahlandlela olandelayo
Isampula Elibi kanye Nesilinganiso Sokuqhathanisa Nomsindo
Imibuzo evame ukubuzwa
What is Scheduled Sampling and Exposure Bias?
Ukuchema kokuchayeka igebe elivelayo lapho imodeli eqeqeshelwe kuphela iziqalo eziphelele kufanele, ngokucabangela, imise emiphumeleni yayo engaphelele. Ukuthatha amasampula okuhleliwe kuwuhlelo lwezifundo oluvala kancane kancane lelo gebe.
Kwenziwani ukusampula okuhleliwe ngesikhathi sokuqeqeshwa?
Amasampula ahleliwe axuba amathokheni eqiniso eliphansi kanye namamodeli akhiqizwe njengama-decoder, alawulwa amathuba abolayo.
Amathuba okusebenzisa ithokheni yeqiniso eliphansi ashintsha kanjani ngaphezu kokuqeqeshwa kumasampula ahleliwe?
Ishejuli iqala eduze nokuphoqelela nokonakala kothisha ukuze imodeli ibonakale kakhulu ekuqaguleni kwayo njengoba ithuthuka.
Ubani othule amasampula ahleliwe, futhi cishe nini?
Ukusampula okuhleliwe kwahlongozwa ngu-Samy Bengio kanye nozakwabo ngo-2015 ukuze babikezele ukulandelana namanethiwekhi avelayo.
Imuphi umumo weshejuli ovame ukucashunwa ngawo ukuze ubole amathuba okuphoqelela uthisha?
Umsebenzi wangempela uphakamise amashejuli okubola komugqa, ama-exponential, kanye ne-inverse-sigmoid ukuze kuncishiswe ithuba lesampula leqiniso eliphansi.