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NIPS/KDD2016読み会@早稲田

bigsea
December 26, 2016

 NIPS/KDD2016読み会@早稲田

"Why Should I Trust You?" Explaining the Predictions of Any Classifier, KDD2016 の紹介資料

bigsea

December 26, 2016
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  1. -*.&r JOUFSQSFUBCMFEBUBSFQSFTFOUBUJPOT ü0SJHJOBMEBUBSFQSFTFOUBUJPO ∈ ℝ$ FH XPSEFNCFEEJOH UFYU UFOTPSXJUIDPMPSDIBOOFMT JNBHF

    ü*OUFSQSFUBCMFEBUBSFQSFTFOUBUJPO ∈ {0,1}$* FH QSFTFODFBCTFODFPGXPSET UFYU QSFTFODFBCTFODFPGTVQFSQJYDFMT UFYU 7
  2. -*.& ໨తؔ਺ = argmin 3∈4 ℒ , , 9 +

    Ω() G:ղऍՄೳͳϞσϧͷू߹ FHઢܗϞσϧ A = 3 ⋅ A ͷۙ๣Ͱ ͱ͕Ͳͷ͘Β͍ ဃ཭͍ͯ͠Δ͔ ͷෳࡶ౓ σʔλ఺ͷۙ๣ͰͰ͖Δ͚ͩݩͷෳࡶͳ൑ผثʹࣅͨৼΔ෣͍Λ͢Δ ղऍՄೳͳ൑ผثΛબͿ ℒ , , 9 = D 9 F,F*∈ − A I σʔλ఺ͱͷڑ཭ ∶ ͷۙ๣ͷ఺ͷू߹ ෳࡶ౓ͷྫ Ω = ∞[ 3 N > ] K個より多くの単語/super pixelsを使う モデルはNG 9
  3. 41-*.& ໨తؔ਺ ü 'FBUVSF*NQPSUBODF S = D US , U

    US = 3US 3US ɿJݸ໨ͷσʔλ఺ͷKݸ໨ͷGFBUVSFʹରԠ͢Δ-*.&ͷॏΈ ü ໨తؔ਺ ରԠ͢Δ'FBUVSF*NQPSUBODFS ͷ߹ܭ͕࠷େͱͳΔΑ͏ͳσʔλ఺ͷ ू߹ΛબͿʢ σʔλ఺ͷݸ਺ ͸ ҎԼʣ , , = D ∃U∈[:\]^_` S $* S_a , = argmax [,|[|gh (, , ) .BYJNVNXFJHIUFEDPWFSBHF㱺 /1IBSE<'FJHF > ͔͠͠ɺTVCNPEVMBSJUZΑΓHSFFEZΞϧΰϦζϜʹ1/ཧ࿦อূ <,SBVTF > 15
  4. γϛϡϨʔγϣϯ࣮ݧ üEBUBTFUCPPLT%7%T TFOUJNFOUBOBMZTJT EBUBTFU QPTOFH  "SFUIFFYQMBOBUJPOTGBJUIGVMUPUIFNPEFM § -*.&͸ద੾ͳGFBUVSFTΛऔͬͯ͜ΕΔͷ͔ʁ 

    4IPVME*USVTUUIJTQSFEJDUJPO § -*.&ʹΑͬͯϢʔβʔͷQSFEJDUJPO΁ͷUSVTU͸޲্͢Δ ͔ʁ  $BO*USVTUUIJTNPEFM § -*.&41͸൑ผثͷྑ͠ѱ͠ͷධՁʹ໾ʹཱ͔ͭʁ 17
  5. $BO*USVTUUIJTNPEFM ü41-*.&Λ࢖ͬͯ൑ผثΛղऍͨ͠ΒɺHFOFSBMJ[BUJPOFSSPS͕ খ͍͞ํΛબ΂Δͷ͔ʁ üσʔλʹBSUJGJDJBMGFBUVSFTΛՃ͑Δ § WBMJEBUJPOTFUͰ͸ͦΕͧΕͷΫϥεʹ § UFTUTFUͰ͸ͦΕͧΕͷΫϥεʹ üWBMJEBUJPOTFUͰͷBDDVSBDZͷ͕ࠩະຬɺ UFTUTFUͰ͸

    Ҏ্ʹͳΔΑ͏ʹSBOEPNGPSFTUΛ܇࿅ ü41-*.&Λ༻͍ͯWBMJEBUJPOTFUͰͷVOUSVTUXPSUIZͳQSFEJDUJPO ͕গͳ͍൑ผثΛྑ͍൑ผثͱͯ͠બͼɺͦΕ͕UFTUTFUͰྑ͍ ੑೳͷ൑ผثͱҰக͢Δ͔ʁ 20
  6. 3FGFSFODFT ü %#BFISFOT 54DISPFUFS 4)BSNFMJOH .,BXBOBCF , )BOTFO BOE,3.„VMMFS)PXUPFYQMBJO JOEJWJEVBMDMBTTJGJDBUJPO

    EFDJTJPOT+PVSOBMPG.BDIJOF-FBSOJOH 3FTFBSDI   ü 6'FJHF"UISFTIPMEPGMOOGPSBQQSPYJNBUJOHTFUDPWFS+ "$.   +VMZ ü )BSB 4 )BZBTIJ ,  .BLJOH5SFF&OTFNCMFT *OUFSQSFUBCMF"#BZFTJBO.PEFM4FMFDUJPO"QQSPBDI r ü ,JN # ,IBOOB 3 ,PZFKP 0 OE &YBNQMFTBSFOPU &OPVHI -FBSOUP$SJUJDJ[F$SJUJDJTNGPS*OUFSQSFUBCJMJUZ ü ",SBVTFBOE%(PMPWJO4VCNPEVMBSGVODUJPONBYJNJ[BUJPO *O5SBDUBCJMJUZ1SBDUJDBM"QQSPBDIFTUP)BSE1SPCMFNT $BNCSJEHF6OJWFSTJUZ1SFTT 'FCSVBSZ ü 3JCFJSP .5 4JOHI 4 (VFTUSJO $  l8IZ4IPVME* 5SVTU:PV z&YQMBJOJOHUIF1SFEJDUJPOTPG"OZ$MBTTJGJFS 1SPDFFEJOHTPGUIFOE"$.4*(,%%*OUFSOBUJPOBM $POGFSFODFPO,OPXMFEHF%JTDPWFSZBOE%BUB.JOJOH ,%% ` r 29