Hanyoyin wasan kwaikwayo-Masu zargi
Hanyoyin wasan kwaikwayo-Critic sun haɗu da xalibai biyu: 'dan wasan kwaikwayo' wanda ke zabar ayyuka da kuma 'mai zargi' wanda ke yin la'akari da yadda waɗannan ayyukan suka yi kyau.
Dubawa
This pairing makes reinforcement learning more stable and sample-efficient than using either approach alone.
Zurfafa nutsewa
Ƙarfafa ilmantarwa yana da nau'i mai faɗi guda biyu: hanyoyin tushen siyasa waɗanda ke koyon abin da za a yi kai tsaye, da hanyoyin da suka dogara da ƙima waɗanda ke koyan yadda kyawawan jihohi suke. Actor-Critic fuses su. Mai wasan kwaikwayo wata manufa ce da ke fitar da yuwuwar aiki; mai sukar aiki ne mai ƙima wanda ya kiyasta dawowar da ake sa ran. Bayan kowane mataki, mai suka yana ƙididdige kuskuren bambancin ɗan lokaci da ke nuna ko sakamakon ya fi kyau ko muni fiye da yadda ake tsammani. Mai wasan kwaikwayo yana amfani da wannan kuskuren don tura manufofinsa zuwa ayyukan da suka doke tsammanin kuma daga waɗanda ba su yi aiki ba. Saboda mai sukar yana ba da ginshiƙan ƙarancin bambance-bambance, ƙididdigar gradient na ɗan wasan kwaikwayo ba su da hayaniya fiye da a cikin tsantsar manufofin-gradient hanyoyin kamar REINFORCE, yayin da har yanzu ana ci gaba da aiwatar da wuraren ayyuka masu ƙima kawai kamar Q-Learning.
Fahimtar Fasaha
Mai wasan kwaikwayo yana sabunta sigoginsa na manufofinsa a cikin tsarin gradient na manufofin, wanda aka ƙaddara ta fa'idar A(s,a) = Q(s,a) - V(s), wanda masu sukar suka ƙididdigewa (sau da yawa ta hanyar kuskuren TD r + gamma*V(s') - V(s)). Amfani yana auna yadda mafi kyawun aiki ya fi matsakaicin jihar, don haka fa'idodi masu kyau suna ƙarfafa ayyuka kuma waɗanda ba su da kyau suna danne su. An horar da mai suka daban don rage kuskuren TD.
Dabarun Tasiri
Kudin da kasafin kuɗi
Hukunce-hukuncen gine-gine suna haifar da aiki da tsadar aiki na shekaru.
Shawarwari masu haske
Ilimin fasaha yana taimaka wa ƙungiyoyi su zaɓi tari mai kyau, ba kawai sabon abu ba.
Kula da inganci
Zaɓuɓɓukan injiniya mafi kyau suna rage abin dogaro a cikin samarwa.
Makomar Hanyoyin wasan kwaikwayo-Masu zargi
Actor-Critic shine kashin bayan mafi yawan zamani mai zurfi RL. Algorithms kamar A3C, A2C, PPO, SAC, da DDPG duk suna ginawa a kai, suna ƙara dabaru kamar ƙulla maƙasudai don sabuntawar kwanciyar hankali, kari don bincike, da ƴan wasan kwaikwayo masu kama da juna don fitarwa. Yi tsammanin ci gaba da haɓakawa a cikin injiniyoyin mutum-mutumi, manyan wakilan wasan kwaikwayo, da RL daga ra'ayoyin ɗan adam don daidaita ƙirar harshe, inda kwanciyar hankali da ingancin samfurin ke da mahimmanci.
Aiwatar da Gaskiyar Duniya
Horar da makaman robobi da masu sarrafa locomotion tare da ci gaba da jujjuyawar haɗin gwiwa (misali, ta amfani da PPO ko SAC)
Daidaita manyan samfuran harshe ta hanyar RLHF, inda PPO (hanyar mai sukar mai wasan kwaikwayo) ke inganta martani akan samfurin lada
Jagorar hadaddun dabarun wasanni kamar StarCraft II da Dota 2
Mai sanyaya cibiyar bayanai da masu kula da makamashi waɗanda ke koyon gyare-gyare mai sauƙi
Hatsari & Tsare-tsare
Haɓaka ma'auni ɗaya na iya ɓoye manyan raunin tsarin.
Sau da yawa ana raina kayan more rayuwa da kuma kuɗin kulawa.
Tsaro da gibin lura na iya girma yayin da tsarin ke ƙara haɓaka.
Taswirar Hanya
Ƙayyade latency, inganci, da maƙasudin farashi kafin aiwatarwa.
Alamar ma'auni a ƙarƙashin ainihin kaya da yanayin bayanai.
Kula da kayan aiki don kurakurai, ɗigo, da tasirin mai amfani.
Shirya bijirowa da hanyoyin mayar da martani kafin sikeli.
Ci gaba da Bincike
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Jagora na gaba
Haɓaka oda na biyu da hanyoyin Newton
Tambayoyin da ake yawan yi
What is Actor-Critic Methods?
Hanyoyin wasan kwaikwayo-Critic sun haɗu da xalibai biyu: 'dan wasan kwaikwayo' wanda ke zabar ayyuka da kuma 'mai zargi' wanda ke yin la'akari da yadda waɗannan ayyukan suka yi kyau. Wannan haɗe-haɗe yana sa koyo ƙarfafawa ya fi karɓuwa da samfuri mai inganci fiye da amfani da kowane hanya kaɗai.
A hanyar Actor-Critic, menene matsayin 'mai sukar'?
Mai suka ya koyi aikin ƙima kuma ya samar da siginar kimantawa (kamar kuskuren TD) wanda ke gaya wa ɗan wasan ko ayyukansa sun fi kyau ko mafi muni fiye da yadda ake tsammani.
Menene 'amfani' A(s,a) = Q(s,a) - V(s) yake aunawa?
Fa'idar ta keɓance nawa takamaiman aiki ya zarce sakamako na yau da kullun daga waccan jihar, yana ba da sigina mafi tsabta fiye da dawo da mai.
Me yasa ƙara mai suka yana rage bambance-bambance idan aka kwatanta da tsantsar manufofin-hanyoyi masu ƙaranci kamar REINFORCE?
Rage kiyasin kimar mai suka a matsayin tushen tushe yana rage bambance-bambancen kimar gradient ba tare da ƙara son zuciya ba, saurin koyo.
Wanne iyawa ne hanyoyin ƴan wasan kwaikwayo-Critic ke da waɗannan hanyoyin tushen ƙima kamar Q-Learning suna damkewa?
Saboda mai wasan kwaikwayo ya daidaita manufofin kai tsaye, zai iya fitar da ayyuka masu ci gaba (misali, juzu'in haɗin gwiwa) ba tare da buƙatar max akan ayyuka da yawa marasa iyaka ba.
Wane sigina ne ɗan wasan ya saba amfani da shi don sabunta manufofin sa?
Mai wasan kwaikwayo yana daidaita manufofinsa a cikin hanyar da aka ba da shawara ta siginar kuskure/TD-kuskure mai sukar, yana ƙarfafa ayyuka fiye da yadda ake tsammani.