I-ALiBi Position Bias
I-ALiBi (Ukunakwa Ngokuchema Komugqa) iyindlela ehlakaniphile yokunikeza ama-transformer umuzwa wokuhleleka kwamagama ngaphandle kokushumeka kwezindawo ngokwesiko.
Uhlolojikelele
It lets a model trained on short text handle much longer inputs at inference time.
I-Deep Dive
Ama-Transformer awanawo umqondo owakhelwe ngaphakathi wokuhleleka kwamagama, ngakho-ke adinga indlela yokubhala ikhodi yendawo. Indlela yakudala yengeza ukushumeka kokuma kuma-vector amathokheni. I-ALiBi, eyethulwe ngabakwaPress, Smith, kanye noLewis ngo-2021, ibakhipha ngokuphelele. Kunalokho, igudluza amaphuzu okunakwa ngokuqondile: lapho ithokheni yombuzo ibheka ithokheni eyisihluthulelo, i-ALiBi ikhipha inhlawulo elinganiselwe nebanga phakathi kwabo. Amathokheni aqhelelene kakhulu athola inhlawulo enkulu, ngakho imodeli ngokwemvelo ikhetha umongo oseduze. Inhloko ngayinye yokunaka ithola i-slope yayo engaguquki yenhlawulo, ngakho-ke amanye amakhanda abheka endaweni kuyilapho amanye abona kude. Ngenxa yokuthi ukuchema kuwumsebenzi webanga nje, i-ALiBi iveza ngomusa ukulandelana okude kakhulu kunalezo ezibonwa ekuqeqesheni.
I-Technical Insight
Ngombuzo osendaweni i kanye nokhiye endaweni j, i-ALiBi yengeza u-m * (j - i) kumphumela wokunakwa ongahluziwe ngaphambi kwe-softmax, lapho u-m ewukufana okuqondile kwekhanda (imithambeka yakha ukulandelana kwejometri njengo-1/2, 1/4, 1/8). Njengoba u-j engaphansi noma elingana no-i ekunakeni kwesizathu, leli gama linguziro noma linegethivu, elijezisa amathokheni akude. Awekho amapharamitha afundiwe futhi akukho okushumekiwe okungeziwe, ngakho okuwukuphela kwesihloko okuwukuphela kwesihloko i-matrix yokuchema eyakhiwe kusengaphambili.
I-Strategic Impact
Isivinini nesikali
Ukugeleza komsebenzi wolimi kungahamba ngokushesha ngaphandle kokudela ukuvumelana.
Finyelela futhi ufinyelele
Yandisa ukufinyelela kuzo zonke izilimi nezitayela zokuxhumana.
Izinqumo ezicacile
Amaqembu angachitha isikhathi esiningi ekwahluleleni kuyilapho i-automation isingatha impinda.
Ikusasa le-ALiBi Position Bias
I-ALiBi ifakazele ukuthi ukuchema okuhlobene, okusekelwe ebangeni kwehlula ukushumeka kwesimo esiphelele sokwenza ubude obuningi, futhi lowo mbono manje usungene kumklamo wesimanje womongo omude. Amanye amamodeli akamuva athanda ukushumeka kwe-rotary (RoPE) esikhundleni salokho, kodwa i-ALiBi isalokhu idumile lapho okubaluleke kakhulu khona futhi isetshenziswe kumamodeli afana ne-BLOOM ne-MPT. Lindela ukuhlola okuqhubekayo kwe-hybrid, okuhlanganisa ukuchema kwebanga nokukala kwe-RoPE, njengoba amalebhu ephusha amawindi womongo abheke ezigidini zamathokheni ngaphandle kokuphinda uziqeqeshe kusukela ekuqaleni.
Ukuqaliswa Komhlaba Wangempela
Ukuqeqesha i-chatbot ngezibonelo zamathokheni angu-1,024 kodwa uyisebenzise kumadokhumenti angamathokheni angu-4,096 ngaphandle kokuqeqeshwa kabusha, kuncike ekukhishweni kwe-ALiBi.
Imodeli yezilimi eziningi ye-BLOOM 176B, eyamukele i-ALiBi ngokuphatha isikhundla sayo.
Amamodeli we-MPT ka-MosaicML, asebenzise i-ALiBi ukukhangisa ngobude bomongo obungenamkhawulo ekuqondeni.
Ifinyeza izinkontileka ezinde zezomthetho ezeqa ubude bokuqeqeshwa bangempela bemodeli, lapho ukuchema kokuqukethwe okuseduze kugcina ukunaka kuhambisana.
Izingozi & Guardrails
Amaqiniso akhonjiwe angafaka ngokuthula imibiko, ukugeleza kosekelo, noma imiphumela yocwaningo.
Ukuzwela okusheshayo kungadala imiphumela engahambisani kuzo zonke izicelo ezifanayo.
Idatha yombhalo ebucayi ingase idalulwe uma izilawuli zokufinyelela zibuthakathaka.
Ukuqalisa Umhlahlandlela
Chaza ifomethi yokuphumayo, ithoni, namazinga wekhwalithi ngaphambi kokukhishwa.
Izimpendulo eziyisisekelo ngemithombo ethembekile noma nini lapho ukunemba kubalulekile.
Gcina indawo yokuhlola isibuyekezo somuntu ukuze uthole imiphumela ephezulu.
Landela amaphethini okuhluleka futhi uqeqeshe kabusha imiyalo noma ukuhamba komsebenzi njalo.
Qhubeka Uhlole
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Umhlahlandlela olandelayo
I-Position Interpolation for Context Extension
Imibuzo evame ukubuzwa
What is ALiBi Position Bias?
I-ALiBi (Ukunakwa Ngokuchema Komugqa) iyindlela ehlakaniphile yokunikeza ama-transformer umuzwa wokuhleleka kwamagama ngaphandle kokushumeka kwezindawo ngokwesiko. Ivumela imodeli eqeqeshwe kumbhalo omfushane ukuthi isingathe okokufaka okude kakhulu ngesikhathi sokucabanga.
Imele ini i-ALIBi?
I-ALiBi imfushane yokuthi I-Attention with Linear Biases, ebizwa ngokuthi inhlawulo ewumugqa eyengezayo kumaphuzu okunakwa.
I-ALIBi iwajezisa kanjani amathokheni akude?
I-ALiBi isusa inani elilinganayo nebanga lokhiye wombuzo ukusuka kumaphuzu wokunaka, ukuze amathokheni akude athole isisindo esincane.
Iyiphi inzuzo esebenza kakhulu ye-ALiBi?
Ngenxa yokuthi ukuchema kuncike ebangeni kuphela, amamodeli aqeqeshelwe ukulandelana okufushane angakwazi ukuphatha amade kakhulu ngesikhathi sokunquma.
Yini ehlukile mayelana nokuchema komugqa kuwo wonke amakhanda okunaka?
I-ALiBi inika ikhanda ngalinye umthambeka ohlukile, ongashintshi (isb., 1/2, 1/4, 1/8), ukuze amakhanda ahlukene abe khona ezibangeni ezihlukene.
Uma kuqhathaniswa nokushumekwa kwezikhundla zendabuko, i-ALiBi yengeza ukuthi mangaki amapharamitha afundiwe?
I-ALiBi yethula amapharamitha amasha afundiwe; ama-slopes ekhanda ngalinye angama-constants anqunywe kusengaphambili.