InoteveraGaidhi rinotevera
Proximal Policy Optimization
Mutauro AI
Nhungamiro yehunyanzvi
Boka Relative Policy Optimization (GRPO) inzira yekusimbisa-yekudzidza yemhando dzemitauro inotonga mhinduro yega yega vachipokana neboka rehama mhinduro kune imwecheteyo kukurumidza, kubvisa yakaparadzana kukosha network inoshandiswa nePPO.
Teerera kugwaro iriAI-yakarondedzerwa · ~2 min
Yakava nemukurumbira seyakanyanya kudzidzisa trick kuseri kweDeepSeek's mafungiro emhando.
GRPO is a variant of policy-gradient reinforcement learning designed to make RL fine-tuning of large language models cheaper and more stable. Many PPO implementations train a value model to estimate returns; its size and cost depend on the implementation. GRPO removes that critic entirely. For each prompt it samples a group of completions (say 8-64), scores them all with a reward signal, and then computes each completion's advantage by standardizing its reward against the group's mean and standard deviation. Above-average answers are reinforced and below-average ones suppressed. A KL-divergence term keeps the model close to a reference policy. Introduced by DeepSeek, it powered DeepSeekMath and the DeepSeek-R1 reasoning models.
Kudzidzisa DeepSeek-R1 uye DeepSeekMath kuburitsa refu ketani-ye-yekufunga kufunga uchishandisa mutemo-wakavakirwa kurongeka mibairo pamatambudziko esvomhu.
Yakanaka-tuning kodhi-chizvarwa modhi apo yega yega mhinduro inopihwa kana ichipfuura bvunzo dzeyuniti, uye boka rinojairwa kusarudza vanokunda.
Open-source RLHF mapaipi (semuenzaniso, muTRL uye verl maraibhurari) uchishandisa GRPO kurongedza mhando dzekutaura pasina kubhadhara kune yakaparadzana kukosha network.
Kuvandudza kuraira-kutevera kana kuchengetedza maitiro nekuenzanisa akati wandei mhinduro nekukasira uye kupa mubairo iwo mubairo wemubairo mitengo yepamusoro kune vezera ravo.
GRPO yave nekukasira kuita yekusagadzika nzira yekudzidzisa yakavhurika mamodheru ekufunga, uye maLab ari kudzokorora panzvimbo dzayo dzisina simba. Vatsvakurudzi vari kuongorora zvigadziriso zvehurefu uye kuoma kwakarerekera (zvakadai saDr. GRPO), token-level pane kutevedzana-level normalization, uye kubvisa kana kugadzirisa zvakare izwi reKL. Tarisira kubatanidzwa kwakasimba nemibairo inovimbika (masvomhu, kodhi, kushandisa chishandiso), kubata zvirinani kwemasaini mashoma, uye mahybrids anosanganisa mabhesi eboka nevatsoropodzi vasina kuremerwa kune agent, akawanda-nhanho mabasa.
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Boka Relative Policy Optimization (GRPO) inzira yekusimbisa-yekudzidza yemhando dzemitauro inotonga mhinduro yega yega vachipokana neboka rehama mhinduro kune imwecheteyo kukurumidza, kubvisa yakaparadzana kukosha network inoshandiswa nePPO. Yakava nemukurumbira seyakanyanya kudzidzisa trick kuseri kweDeepSeek's kufunga modhi.
GRPO uses a group-relative baseline rather than a separately learned value estimator. The size and resource savings depend on the PPO implementation used for comparison.
Kupedza kwega kwega kwakanakira (mubairo - boka zvinoreva) / chiyero cheboka kutsauka, saka boka remhinduro kune imwecheteyo kukurumidza rinoita seyekutanga.
GRPO yakaunzwa uye yakakurumbira neDeepSeek, kunyanya muDeepSeekMath uye seyinjini yeRL kuseri kweDeepSeek-R1 yekufunga modhi.
Chirango cheKL chinopesana nereferensi (kazhinji pre-RL) modhi inogadzika kudzidziswa kuitira kuti mutemo uvandudze pasina kudonha kana kukukurwa kuita zvinobuda.
Sampling mhinduro dzakawanda nekudzipa zvibodzwa zvine otomatiki kutarisisa mapeya zvakachena neGRPO's boka-yakajairika mabhenefiti, hapana anotsoropodza anodiwa.
Ramba uchidzidza
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InoteveraGaidhi rinotevera
Proximal Policy Optimization
Mutauro AI