Uma ufuna ukufunda okwengeziwe mayelana nokuthi Imodeli Yolimi Olukhulu Yakamuva (LLM) Llama 3 yakhiwa kanjani umthuthukisi nethimba le-Meta ngamagama alula, nakanjani uzowujabulela lo mhlahlandlela osheshayo ohlanganisa ividiyo edalwe ngu-Tunadorable yokuthi ungakha kanjani. I-Llama 3 kusukela ekuqaleni kukhodi. Nakanjani uzojabulela lo mhlahlandlela osheshayo ohlanganisa ividiyo edalwe ngu-Tunadorable yokuthi ungayakha kanjani i-Llama 3 kusukela ekuqaleni ngekhodi.
Lo mhlahlandlela wabaqalayo ngethemba ukuthi uzokwenza amaphrojekthi okufunda ngomshini angasabisi kancane, ikakhulukazi uma umusha ekucubunguleni amagama, ama-LLM, kanye nobuhlakani bokwenziwa (AI). Isifanekiso se-Llama 3, esakhiwe kusetshenziswa i-Python kanye nohlaka lwe-PyTorch, siyisiqalo esihle sabaqalayo. Kukusiza ukuthi uqonde izici ezibalulekile zesakhiwo se-transformer, okuhlanganisa ukwenza amathokheni, ama-vector ashumekiwe, nezindlela zokunaka, ezibalulekile ekucubunguleni umbhalo okuphumelelayo.
Amamodeli asekelwe ku-Transformer aguqule umkhakha wokucubungula ulimi lwemvelo (NLP) eminyakeni yamuva. Bazuze ukusebenza okuphezulu kakhulu emisebenzini ehlukahlukene ye-NLP, njengokuhumusha, ukuhlaziya imizwa, nokukhiqizwa kombhalo. Imodeli ye-Llama 3 iwukusetshenziswa okulula kwezakhiwo ze-Transformer, edizayinelwe ukusiza abasaqalayo ukuthi babambe imiqondo eyisisekelo futhi bathole amamodeli wokufunda omshini wokwakha umuzwa wokuzizwisa.
Ngaphambi kokuthi ungene ekusebenziseni isifanekiso se-Llama 3, kubalulekile ukulungisa indawo yakho yokuthuthuka. Nazi izinyathelo ezibalulekile:
- Faka iPython: Qiniseka ukuthi iPython ifakiwe kukhompyutha yakho. Imodeli ye-llama 3 ihambisana nezinguqulo ezingu-3.x zePython.
- Faka i-PyTorch: I-PyTorch iwuhlaka lokufunda olujulile oludumile olunikeza isikhombimsebenzisi esivumelana nezimo futhi esinembile sokwakha amanethiwekhi emizwa. Landela inkomba esemthethweni yokufaka ye-PyTorch yesistimu yakho yokusebenza.
- Jwayela imiqondo yokufunda komshini: Ukuqonda okuyisisekelo kwemiqondo yokufunda komshini, njengemisebenzi yokulahlekelwa, ama-algorithm okuthuthukisa, nokusebenza kwe-matrix, kuzokusiza ukuthi uthuthuke ngalo mhlahlandlela.
Ukuqonda Izingxenye Zemodeli
Imodeli ye-Llama 3 ihlanganisa izingxenye ezimbalwa ezibalulekile ezisebenza ndawonye ukucubungula nokuqonda idatha yombhalo:
- I-Tokenization: Ukwenza amathokheni kuyinqubo yokuguqula umbhalo ongenalutho ube izingcezu ezincane, ezilawulekayo ezibizwa ngokuthi amathokheni. Lawa mathokheni angaba amagama angawodwana, amagama angaphansi, noma izinhlamvu, kuye ngesu lamathokheni elisetshenzisiwe. Ukwenza amathokheni kusiza imodeli ukuthi ihlukanise umbhalo wokufakwayo ube yifomethi engakwazi ukuyicubungula kahle.
- Ama-vectors ashumekayo: Ama-vectors ashumekayo ayizethulo ezinobukhulu obuphezulu zamathokheni athwebula izincazelo zawo ze-semantic. Igama ngalinye lidwetshwe ivekhtha eminyene endaweni eqhubekayo, okuvumela imodeli ukuthi iqonde ubudlelwano nokufana phakathi kwamagama ahlukene. Ama-vectors okushumeka afundwa ngesikhathi sokuqeqeshwa futhi adlala indima ebalulekile ekhonweni lemodeli lokuqonda ulimi.
- Umbhalo wekhodi wokuma: Ngokungafani namanethiwekhi e-neural ajwayelekile (RNN), ama-transformer awathathi ngokwemvelo uhlobo olulandelanayo lombhalo. Ukubhala ngekhodi kusetshenziselwa ukujova ulwazi mayelana nokuma okuhlobene kwe-elementi ngayinye emshweni. Ngokungeza amakhodi okuma endaweni kuma-vector ashumekayo, imodeli ingathwebula ukuhleleka nesakhiwo sombhalo ofakiwe, okubalulekile ekuqondeni kolimi.
- I-Attention Mechanism: Indlela yokunaka iyingxenye emaphakathi yesakhiwo se-transformer. Ivumela imodeli ukuthi igxile ezingxenyeni ezihlukene zokulandelana kokokufaka lapho ikhiqiza okukhiphayo. Indlela yokunaka ibala isamba esinesisindo sezethulo zokufakwayo, inikeze izisindo eziphakeme kulwazi olufaneleka kakhulu. Lokhu kuvumela imodeli ukuthi ithwebule ukuncika kwesikhathi eside futhi iqonde umongo wegama ngalinye emshweni.
- Inethiwekhi Yokujwayela Nokudlulisela Phambili: Amasu okwenza kube jwayelekile, njengokujwayelekile kongqimba, asetshenziselwa ukuzinzisa inqubo yokufunda nokuthuthukisa ukuhlangana kwemodeli. Inethiwekhi yokuphakelayo eya phambili, eyaziwa nangokuthi isendlalelo esisekelwe ngokuphelele esisekelwe endaweni, isebenzisa ukuguqulwa okungaqondile emiphumeleni yokunaka, ithuthukisa amandla okuveza amandla nekhono lokufunda lemodeli.
Ukuqaliswa kwemodeli isinyathelo ngesinyathelo
Manje njengoba usunokuqonda okuyisisekelo kwezingxenye ezibalulekile, ake singene ekusetshenzisweni kwesinyathelo nesinyathelo kwesifanekiso se-Llama 3:
- Qalisa Amapharamitha: Qala ngokuchaza amapharamitha nezingqimba ezidingekayo kumodeli yakho. Lokhu kufaka phakathi ukuchaza usayizi wesilulumagama, ubukhulu bokushumeka, inani lamakhanda okunaka, namanye amapharamitha. Qalisa izendlalelo zokuhlanganisa kanye nezifaki khodi zendawo ezisuselwe kulawa mapharamitha.
- Lungiselela idatha: Khetha isethi yedatha yokuqeqeshwa efanele yemodeli yakho. Inketho edumile yemisebenzi yokumodela yolimi isethi yedatha ethi “Tiny Shakespeare”, equkethe isethi engaphansi yemisebenzi ka-Shakespeare. Chuba kusengaphambili idatha ngokwenza umqondo wombhalo futhi uyiguqule ibe izethulo zezinombolo imodeli engayiqonda.
- Yakha imodeli yezakhiwo: Sebenzisa i-architecture ye-transformer ngokuchaza indlela yokunaka, izendlalelo zokujwayelekile kanye nenethiwekhi yamandla. I-PyTorch inikeza isethi yamabhulokhi wokwakha namamojula enza ukwakhiwa kwamamodeli kube lula. Sebenzisa lawa mamojula ukuze udale isifaki khodi nezingxenye zedekhoda yesiguquli.
- I-Learning Loop: Bhala iluphu yokufunda ephindaphinda kudathasethi ngamaqoqo. Eqeqebeni ngalinye, yenza ukusakazwa phambili ukuze ubale okuphumayo kwemodeli futhi ubale ukulahlekelwa usebenzisa umsebenzi wokulahlekelwa ofanelekile. Sebenzisa i-algorithm yokuthuthukisa, efana ne-Adam noma i-SGD, ukuze ubuyekeze amapharamitha emodeli ngokusekelwe kumagradient abaliwe. Phinda le nqubo ngenani elimisiwe lama-epoch noma kuze kube yilapho imodeli ihlangana.
- Okucatshangwayo: Ngemva kokuqeqesha imodeli, ungayisebenzisa ukuze wenze izibikezelo kudatha entsha, engabonakali. Dlulisa umbhalo ofakiwe kumodeli eqeqeshiwe futhi uthole imiphumela ekhiqiziwe. Kuye ngomsebenzi wakho, kungase kudingeke ukuthi ngemva kokucubungula izibikezelo zemodeli ukuze uthole ifomethi oyifunayo noma uhumushe imiphumela.
Amathiphu asebenzayo okufunda ngempumelelo
Ukwakha imodeli ye-Llama 3 akukhona nje ukuqonda imiqondo yetiyori kuphela, kodwa futhi mayelana nokuthola ulwazi olusebenzayo. Nawa amanye amathiphu okwenza inqubo yakho yokufunda iphumelele kakhulu:
- Linga ngama-hyperparameter ahlukene nokulungiselelwa kwemodeli ukuze ubone umthelela wawo ekusebenzeni kwemodeli. Lungisa ubukhulu bokushumeka, inombolo yezinhloko zokunaka, nokujula kwenethiwekhi ukuze uthole izilungiselelo ezilungile zomsebenzi wakho othize.
- Bona ngeso lengqondo izisindo zokunaka nokushumeka ukuze uqonde kangcono ukuthi imodeli icubungula kanjani futhi iqonde umbhalo ofakiwe. I-PyTorch ihlinzeka ngamathuluzi namalabhulali okubona ngeso lengqondo izingxenye zemodeli, ezingakusiza ukuthi ulungise iphutha futhi uhumushe ukuziphatha kwemodeli.
- Bandakanya nomphakathi wokufunda ngomshini ngokubamba iqhaza kumaforamu, amaqembu ezingxoxo, nezinkundla ze-inthanethi. Yabelana ngentuthuko yakho, buza imibuzo, futhi ufunde kodokotela abanolwazi. Ukusebenzisana nabanye kungasheshisa ukufunda kwakho futhi kukunikeze ulwazi olubalulekile.
Isiphetho nezinye izinsiza
Ngokulandela lo mhlahlandlela wabaqalayo, uthathe izinyathelo zokuqala zokwakha imodeli yokufunda yomshini esekelwe ku-transformer. Imodeli ye-Llama 3 isebenza njengesisekelo sokuqonda imiqondo eyisisekelo nezingxenye zesakhiwo se-transformer.
Ukuze ujulise ulwazi namakhono akho, ungahlola lezi zinsiza ezilandelayo:
- Imibhalo esemthethweni ye-PyTorch kanye nezifundo: Iwebhusayithi ye-PyTorch inikeza imibhalo ebanzi nezifundiswa ezihlanganisa izici ezihlukahlukene zokufunda okujulile nokusebenzisa imodeli.
- Izihloko Zokucwaninga Nge-Transformer: Funda izindatshana ezinethonya, njengokuthi “Ukunakwa Yikho Konke Okudingayo” kaVaswani et al, ukuze uqonde kangcono ukwakheka kwe-transformer nokuhluka kwayo.
- Izifundo zokufunda ngomshini namabhuku: Bhalisa ezifundweni eziku-inthanethi noma funda amabhuku okufunda ngomshini nokucutshungulwa kolimi lwemvelo. Lezi zinsiza zihlinzeka ngezindlela zokufunda ezihlelekile kanye nezincazelo ezijulile zemiqondo eyinhloko.
Khumbula, ukwakha imodeli ye-Llama 3 kumane kuyisiqalo sohambo lwakho lokufunda ngomshini. Njengoba ufunda futhi uhlola, uzothola amasu athuthuke kakhulu nezakhiwo ezakha phezu kwezisekelo ezimbozwe kulo mhlahlandlela.
Ziphonsele inselelo, hlala unelukuluku lokwazi, futhi qhubeka uzilolonga. Ngokuzibophezela nokuphikelela, uzobe usendleleni eya ekufundiseni umshini osekelwe ku-transformer futhi ubambe iqhaza emkhakheni othokozisayo wokucubungula ulimi lwemvelo.
Ikhredithi yevidiyo: Umthombo
Funda kabanzi Umhlahlandlela:
- I-Llama 3 ku-Groq Cloud iletha izivinini ezimangalisayo
- Ungayisebenzisa Kanjani I-PyTorch Yezicelo Zokufunda Okujulile - Umhlahlandlela Wabaqalayo
- Iyini imodeli ye-transformer futhi isebenza kanjani?
- Yini i-multimodal intelligence yokufakelwa?
- Uyicwenga kanjani imodeli ye-Mixtral yomthombo ovulekile we-AI
- I-Intel Gaudi 3 AI Accelerator ichaziwe
