Goでつくる進化計算パッケージ

Transcript

1. GoConference’19 GoͰͭ͘ΔਐԽܭࢉύοέʔδ @tsurubee 2019.07.13 Go Conference '19 Summer in Fukuoka

2. GoConference’19 ௽ా തจ (@tsurubee) GMOϖύϘגࣜձࣾ ϗεςΟϯάࣄۀ෦
 ΠϯϑϥνʔϜ 2

3. GoConference’19 ࠓ೔࿩͢͜ͱ wਐԽܭࢉͱ͸
   
   Ҩ఻తΞϧΰϦζϜͱ͸
   wҨ఻తΞϧΰϦζϜͷ࢓૊Έ
   w(PݴޠʹΑΔҨ఻తΞϧΰϦζϜͷ࣮૷
   wࠓ೔ͷ͓୊ʢ࠷దԽ໰୊ʣΛղ͍ͯΈΔ 3

4. GoConference’19 ਐԽܭࢉͱ͸ wੜ෺ͷਐԽ΍ৼΔ෣͍Λ໛฿ͨ͠࠷దԽख๏ͷ૯শ
   wϝλώϡʔϦεςΟοΫͳख๏Ͱ͋Γɺෳࡶͳ໰୊΍໰୊ߏ଄ͷಉఆ͕ ࠔ೉ͳ໰୊ʹ΋༗ޮͳ࠷దԽख๏ͱͯ͠ظ଴͞Ε͍ͯΔ 4

5. GoConference’19 ਐԽܭࢉͱ͸ wੜ෺ͷਐԽ΍ৼΔ෣͍Λ໛฿ͨ͠࠷దԽख๏ͷ૯শ
   wϝλώϡʔϦεςΟοΫͳख๏Ͱ͋Γɺෳࡶͳ໰୊΍໰୊ߏ଄ͷಉఆ͕ ࠔ೉ͳ໰୊ʹ΋༗ޮͳ࠷దԽख๏ͱͯ͠ظ଴͞Ε͍ͯΔ 5 NFUBIFVSJTUJD
   BMHPSJUIN ಛఆͷ໰୊ͷΈΛର৅ͱ͢ΔͷͰ͸ͳ͘ɺ ༷ʑͳ໰୊ʹରͯ͠ɺൺֱత୹࣌ؒͰ
 ۙࣅղΛޮ཰Α͘ٻΊΔղ๏

6. GoConference’19 ਐԽܭࢉύοέʔδ eago wཻࢠ܈࠷దԽ
   wҨ఻తΞϧΰϦζϜ 6 IUUQTHJUIVCDPNUTVSVCFFFBHP &WPMVUJPOBSZ
   "MHPSJUIN
   JNQMFNFOUFE
   JO
   (P ࣮૷ΞϧΰϦζϜ

7. GoConference’19 ਐԽܭࢉύοέʔδ eago wཻࢠ܈࠷దԽ
   wҨ఻తΞϧΰϦζϜ 7 IUUQTHJUIVCDPNUTVSVCFFFBHP &WPMVUJPOBSZ
   "MHPSJUIN
   JNQMFNFOUFE
   JO
   (P ࣮૷ΞϧΰϦζϜ ࠓճ͸ͪ͜Βʹ͍ͭͯ঺հʂ

8. GoConference’19 Ҩ఻తΞϧΰϦζϜ(GA)ͱ͸ w ूஂͷதͰ؀ڥʹదԠͨ͠ݸମ͕ΑΓߴ͍֬཰Ͱ
 ੜ͖࢒Γɺ࣍ੈ୅ʹࢠΛ࢒͢ʢࣗવ౫ଡઆʣ࢓૊Έ
 Λιϑτ΢ΣΞతʹ໛͢͜ͱͰෳࡶͳ໰୊ʹର͢Δ
 ࠷దղΛ୳ࡧ͢Δख๏
   w ໰୊ͷղΛੜ෺ͷݸମʹݟཱͯͯɺͦͷݸମͷूஂʹ ରͯ͠ɺબ୒ʢ4FMFDUJPOʣަࠥʢ$SPTTPWFSʣಥવ


   มҟʢ.VUBUJPOʣΛద༻͢Δ 8 ೔ܦ
   Y5&$)
   ৽ܕ৽װઢʮ/ܥʯͷlإz ΛੜΜͩʮҨ఻తΞϧΰϦζϜʯͷൿີ IUUQTXXXTMJEFTIBSFOFUL[PLNHFOFUJDBMHPSJUIN
   IUUQTUFDIOJLLFJCQDPKQJUBSUJDMF$0-6./

9. GoConference’19 9 GAͷྲྀΕ

10. GoConference’19 10 GAͷྲྀΕ 
    ූ߸Խ

11. GoConference’19 11 
    దԠ౓ GAͷྲྀΕ 
    ූ߸Խ

12. GoConference’19 12 GAͷྲྀΕ 
    దԠ౓ 
    બ୒ 
    ූ߸Խ

13. GoConference’19 13 
    దԠ౓ 
    બ୒ 
    ަࠥ 
    ಥવมҟ GAͷྲྀΕ 
    ූ߸Խ

14. GoConference’19 ࠓ೔ͷ͓୊ 14

15. GoConference’19 Gopherͷը૾Λੜ੒ͯ͠ΈΑ͏ʂ 15 
    ූ߸Խʢ&ODPEJOHʣ
    
    దԠ౓ʢ'JUOFTTʣ
    
    બ୒ʢ4FMFDUJPOʣ
    

    
    ަࠥʢ$SPTTPWFSʣ
    
    ಥવมҟʢ.VUBUJPOʣ ҎԼͷεςοϓʹԊͬͯղઆ͍͖ͯ͠·͢ʂ

16. GoConference’19 1. ූ߸ԽʢEncodingʣ 16 ໰୊ʹର͢ΔղΛݸମͷછ৭ମɺղͷߏ੒ཁૉΛҨ఻ࢠͱͯ͠දݱ͢Δ છ৭ମ͸ɺʷʷ
    
     ࣍ݩϕΫτϧ 'MBUUFOJOH ɾɾɾɾ ʷ

    <>VJOUܕ 3(#"ը૾

17. GoConference’19 ໰୊ʹର͢Δղʢݸମʣͷྑ͞ΛධՁ 2. దԠ౓ʢFitnessʣ 17 ը૾ؒڑ཭ʢྨࣅ౓ʣ
    
    ϐΫηϧؒڑ཭ͷ૯࿨ͷฏํࠜ
    ը૾ؒڑ཭͕θϩʹ͍ۙ΄Ͳɺ༏ΕͨղͰ͋Δ ը૾ؒڑ཭ ϐΫηϧؒڑ཭
     ϢʔΫϦουڑ཭

18. GoConference’19 3. બ୒ʢSelectionʣ ؀ڥʹదԠͰ͖Δݸମ΄Ͳ࣍ੈ୅ʹࣗ෼ͷҨ఻ࢠΛ࢒ͤΔΑ͏ʹ͢ΔͨΊʹɺ ਌ݸମͷదԠ౓ʹԠͯ͡ੜ͖࢒ΔݸମΛબ୒͢Δ 18 τʔφϝϯτબ୒
    ʢUPVSOBNFOU
    TFMFDUJPOʣ ϥϯμϜʹநग़ͨ͠4ݸͷݸମͷ͏ͪɺ
 ࠷΋దԠ౓͕ߴ͍ݸମΛબ୒ "

    # $ % దԠ౓     $ func Select(indi Individuals) (Individuals, error) { if len(indi) < t.NContestants { return nil, errors.New("NContestants is too large") } selected := make(Individuals, len(indi)) for i := range selected { winner := indi[rand.Intn(len(indi))] for j := 0; j < t.NContestants; j++ { next := indi[rand.Intn(len(indi))] if winner.Fitness > next.Fitness { winner = next } } selected[i] = winner } return selected, nil }

19. GoConference’19 4. ަ伹ʢCrossoverʣ 19 બ୒͞Εͨͭͷ਌ݸମΛަࠥ͠ɺࢠݸମΛੜ੒͢Δ Ұ఺ަࠥ    

                ަࠥ఺ ਌ݸମ̍ ਌ݸମ̎                 ࢠݸମ̍ ࢠݸମ̎ ަࠥ఺Λڥʹޓ͍ʹཁૉΛަ׵͢Δૢ࡞Λߦ͏

20. GoConference’19 5. ಥવมҟʢMutationʣ 20 ͍ͣΕͷ਌΋͍࣋ͬͯͳ͍Ҩ఻ࢠΛࢠʹ࣋ͨͤΔ͜ͱͰଟ༷ੑͷҡ࣋͢Δ func (I Image) Mutation() {

    mutationRate := 0.0005 rand.Seed(time.Now().UnixNano()) for i := 0; i < len(I.Pix); i++ { if rand.Float64() < mutationRate { I.Pix[i] = uint8(rand.Intn(255)) } } }                 ɾɾɾɾ ɾɾɾɾ Ұఆͷ֬཰Ͱཁૉͷ஋ΛϥϯμϜʹมߋ͢Δ

21. GoConference’19 Ҏ্ͷεςοϓΛ܁Γฦͯ͠
 ਐԽΛॏͶ͍͖ͯ·͢ʂ 21

22. GoConference’19 ͳͥGoݴޠͰॻ͍ͨͷ͔ʁ 22

23. GoConference’19 GAͷ՝୊ɿܭࢉ࣌ؒͷ୹ॖ w ("͸ɺ๲େͳܭࢉྔΛཁ͢ΔͨΊɺ࣮༻࣌ؒ಺Ͱྑ޷ͳղΛಘΔͨΊʹ
 ܭࢉॲཧΛߴ଎Խ͢Δ͜ͱ͕๬·Ε͍ͯΔ 23 w ("͸ɺෳ਺ͷղީิΛ༻͍ͨଟ఺୳ࡧͷΞϧΰϦζϜͰ͋ΔͨΊɺຊ࣭త ʹฒྻԽͱ਌࿨ੑ͕ߴ͍ w

    ܭࢉ࣌ؒ୹ॖΛ໨తͱͯ͠ɺ༷ʑͳ("ͷฒྻԽख๏͕ఏҊ͞Ε͍ͯΔ

24. GoConference’19 24 GA͸ॲཧΛฒྻԽ͠΍͍͢ Goݴޠ͸ฒྻԽॲཧ͕ॻ͖΍͍͢ GoݴޠΛ࢖͏ͱ༷ʑͳGAͷฒྻԽϞσϧ ΛαΫοͱ࣮૷Ͱ͖ͯ࠷ߴͳͷͰ͸ʁ

25. GoConference’19 ฒྻԽϞσϧɿϚελʔεϨʔϒํࣜ 25 4MBWF .BTUFS 4MBWF 4MBWF ɾɾɾ ϚελʔεϨʔϒํࣜ w

    ("ͷ࠷΋୯७ͳฒྻԽϞσϧͰ͋ΓɺదԠ౓ܭࢉΛฒྻԽ͢Δ w શମͷ੍ޚ͓ΑͼҨ఻తૢ࡞Λߦ͏ϚελʔͱɺదԠ౓ܭࢉΛߦ͏ෳ਺ͷεϨʔϒ͔ Βߏ੒͞ΕΔ ͜͜ΛฒྻԽ͢Δʂ

26. GoConference’19 goroutineʹΑΔGAͷฒྻԽ w ͦΕͧΕͷݸମͷదԠ౓ܭࢉ͸ಠཱͯ͠ߦ͑ΔͨΊɺదԠ౓ܭࢉΛ͢ΔͨΊͷεϨʔϒͱͯ͠ HPSPVUJOFΛ্ཱͪ͛ͯɺฒྻͰܭࢉΛߦ͏ 26 func (indis Individuals) Evaluate(parallel

    bool) { var wg sync.WaitGroup for i := range indis { wg.Add(1) go func(i int) { defer wg.Done() indis[i].Evaluate() //దԠ౓ܭࢉॲཧ }(i) } wg.Wait() } w TZOD8BJU(SPVQΛ༻͍ͯɺಠཱͨ͠ෳ਺ͷλεΫΛฏߦͰॲཧͯ͠ɺͦΕΒશͯͷऴྃΛ଴ͪ ߹ΘͤΔॲཧ͕γϯϓϧͳهड़Ͱ࣮૷Ͱ͖Δ

27. GoConference’19 Demo 27

28. GoConference’19 GAʹΑΔը૾ੜ੒ 28 (PQIFSͷ͕࢟ʜʂ ʻ৚݅ʼ 1PQVMBUJPO
    4J[F
    
 $SPTTPWFS
    3BUF
    
 .VUBUJPO
    3BUF
    
 5PVSOBNFOU
    4J[F
     ੈ୅໨

    ੈ୅໨ ໨ඪ ੈ୅໨

29. GoConference’19 ฒྻԽͷ༗ޮੑ 29 దԠ౓ܭࢉͷฒྻԽ͕ॲཧ࣌ؒͷ୹ॖʹد༩͍ͯ͠Δ Ϛγϯɿ.BD#PPL
    1SP
 ϓϩηοαɿ
    ()[
    *OUFM
    $PSF
    J
 ϝϞϦɿ(#

30. GoConference’19 ·ͱΊ w("Λ࢝Ίͱͨ͠ਐԽܭࢉ͸ɺෳࡶͳ໰୊΍໰୊ߏ଄ͷಉఆ͕ࠔ೉ͳ໰୊ ʹ΋༗ޮͳ࠷దԽख๏ͱͯ͠ظ଴͞Ε͍ͯΔ
    w("͸ଟ఺୳ࡧΞϧΰϦζϜͰ͋ΔͨΊɺฒྻԽͱ਌࿨ੑ͕ߴ͍
    wHPSPVUJOFΛ༻͍ΔͱαΫοͱ("ͷฒྻԽॲཧ͕ॻ͚Δ
    w("ͰԿͱ͔(PQIFSͷ໘Ө͕ݟ͑Δը૾͕࡞Εͨ 30

31. GoConference’19 ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ 31