Contrastive Decoding
Contrast decoding inoburitsa mavara emhando yepamusoro nekubvisa maitiro emutauro mudiki, usina simba kubva kune iwo mukuru, wakasimba.
Pfupiso
It amplifies what the expert knows and the amateur misses, reducing repetition and bland output.
Kudzika Kwakadzika
Kana muenzaniso wemutauro unosarudza izwi rinotevera, rinoburitsa mukana wemashoko aro. Contrastive decoding (yakaunzwa naLi et al. muna 2022) inomhanyisa mhando mbiri pachinhu chimwe chete: hombe 'nyanzvi' uye diki 'amateur'. Panzvimbo yekuvimba nehunyanzvi hunogona kuitika, inotora chiratidzo chega chega nemusiyano uripo pakati pekugona kwenyanzvi neamateur. Tokens iyo nyanzvi inofarira asi amateur haakudzwe; Mazwi akajairwa ese mamodheru anoda (senge 'iyo' kana mitsara inodzokororwa) anodzvinyirirwa, sezvo maamateur anoadawo. Sefa inogoneka inotanga kurasa zviratidzo izvo nyanzvi inoona zvisingaite, saka mutsauko haumbosimudzira zvisina maturo. Mhedzisiro yacho yakawedzera kutsetseka, inopindirana, uye isingadzokorori-dzokororo yemavara marefu pane makaro kana nucleus sampling, pasina kumwe kudzidziswa kunodiwa.
Technical Insight
Chibodzwa chepakati ilogi p_expert(chiratidzo) kubvisa coefficient nguva log p_amateur(chiratidzo). Nekuti amateur anogovera zvikanganiso zvehunyanzvi zvehunyanzvi (kufarira ma-high-frequency tokens, looping, degenerate kudzokorora), kubvisa iyo log-mikana inodzima idzo dzakagovaniswa nzira dzekutadza uku uchichengetedza ruzivo rwechokwadi rwenyanzvi. Chisungo chinogoneka chinochengeta chete zviratidzo pamusoro pechikamu (alpha) chepamusoro nyanzvi chingangoitika, kudzivirira mutsauko kubva mukukudza zvisingawanzo, mazwi asina kubatana.
Strategic Impact
Kumhanya uye chiyero
Mutauro workflows inogona kufamba nekukurumidza pasina kupira kuenderana.
Svika uye svika
Inopamhidzira kupinda mumitauro yese nemataera ekutaurirana.
Sarudzo dzakajeka
Zvikwata zvinogona kupedza nguva yakawanda pakutonga uku otomatiki ichibata kudzokorora.
Ramangwana reContrastive Decoding
Contrastive decoding yakakurudzira mhuri ye 'contrast at inference' nzira, kusanganisira DoLa (kusiyanisa yemuenzaniso wega wekare neanononoka maseketi kucheka kufungidzira) uye mutsauko-unoziva musiyano unosiyana uye usina magwaro akadzoserwa. Tarisira kubatanidzwa kwakasimba nekudzoreredza, zvibodzwa zvechokwadi, uye diki-amateur distillation, pamwe nekusanganiswa nekufungidzira decoding kuitira kuti maamateur atungamirire kunaka uye kukurumidze chizvarwa panguva imwe chete.
Real-World Implementation
Kugadzira nyaya refu, isingadzokorore kana kuenderera mberi kwechinyorwa uko nucleus sampling inodonha kuita loop
Kubatanidza nyanzvi ye65B ine 1.5B amateur yekuvandudza chizvarwa chakavhurika pasina kunyatsogadzirisa.
Kuderedza kudzokororwa kwakashata mukupfupisa uye nhaurirano zvabuda
Kushanda sehwaro hweDoLa-maitiro ekuzvisiyanisa kudzikisa chokwadi chekufungidzira
Njodzi & Guardrails
Chokwadi chehuroyi chinogona kupinda chinyararire mishumo, kuyerera kwetsigiro, kana tsvakiridzo.
Kunzwa nekukasira kunogona kugadzira mhedzisiro isingaenderane pane zvikumbiro zvakafanana.
Sensitive text data inogona kuburitswa kana zvidhiraivho zvisina kusimba.
Implementation Roadmap
Tsanangura chimiro chekubuda, toni, uye mhando zviyero usati waburitsa.
Mhinduro dzepasi neakavimbika masosi pese pazvine basa.
Chengetedza ongororo yekuongorora yemunhu kune yakakwira-stake zvinobuda.
Tevera maitiro ekutadza uye dzidzisazve kukurudzira kana mafambiro ebasa nguva nenguva.
Ramba Uchiongorora
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Gaidhi rinotevera
Minimum Bayes Risk Decoding
Mibvunzo inowanzo bvunzwa
What is Contrastive Decoding?
Contrast decoding inoburitsa mavara emhando yepamusoro nekubvisa maitiro emutauro mudiki, usina simba kubva kune iwo mukuru, wakasimba. Inokwidziridza izvo nyanzvi inoziva uye iyo amateur inopotsa, ichideredza kudzokorora uye bland kubuda.
Mukududzira kwakasiyana, ibasa rei rinoitwa nemuenzaniso mudiki we'amateur'?
Iyo amateur's log-mikana inobviswa kubva kune nyanzvi, kudzima zvikanganiso zvakarongeka (sekufarira ma tokens) ayo ese mamodheru anogovana.
Sei kubvisa zvingangoitika zveaamateur zvichideredza kudzokorora uye kuburitsa bland?
Mhando dzose dziri mbiri dzinowanzoda-kunyanya-kuda kwepamusoro-frequency uye kudzokorora zviratidzo; kubvisa maamateur kunobvisa kurerekera kwakagovaniswa, kudzikisa sarudzo dzakapusa.
Chii chinoita adaptive plausability constraint?
Iyo plausibility sefa inorasa yakaderera-inogoneka tokens pasi penyanzvi, saka mutsauko haugone kukurudzira mazwi asina kubatana kana asina musoro.
Zvingangove kuti chii chinonzi scoring formula mukusiyanisa decoding?
Mumwe nemumwe anenge akwikwidza anopihwa zvibodzwa sezvo nyanzvi yelogi-mukana kubvisa akaremerwa neamateur log-mukana, mibairo tokeni iyo nyanzvi inosanoda.
Ndeipi nzira inotevera inotambanudzira pfungwa yekusiyanisa kune imwe modhi yezvikamu zvayo?
DoLa inosiyanisa yekutanga nguva yemodhi (yekutanga-layer) uye yakakura (yanonoka-layer) fungidziro yekudzikisa kuona, kushandisa iyo yekusiyanisa pfungwa mukati memuenzaniso mumwe.