[#, ?`#k:6paQOD1jH'KDpEF;t*T; B*aP[bCBaA":&4LD#Tb+Im1R#XaN%T&@O3-q]%Gj ^0bPKHGoT8c_&@^cT;@4MUU$7"L=KMkP[t;@g[L53? !DPad!47,k&>T\hNIo7BZ-Nt!n>Df)]=jYmu/agL0ST`@;k03rTN[Y$0629CqniekB6?C!n9 [인공지능 이야기] 생물학적 신경망, 인공신경망, 퍼셉트론, MLP | 인공신경망은 두뇌의 신경세포, 즉 뉴런이 연결된 형태를 모방한 모델이다. _?i["6h@%6ZFK+p=;;"+YalGkh+OJ?nEc=&e#S54Ye`o@,Kr`A-+(B`'ri^u"]=Jd GL$Db$Y=F?c!D[(Ff[t3Oi^>j9=E"6A,O('Y? 3*'oD:r8=8Cfo4>9[abPPmd\0P5up=oVqpH5U=UNAVddIOLI)?H!<=J1:B7GLLf9` ;c0l]U>1GKon#nqs:` dPnM$l)cSEG+k\rFJ%if@/#0e%UqU5 X=Q9m2'0g@8! 92cn#Z:-!n(kVG4eRh`JbLsqoIn3qW/HZ;)-ClPK\5o4n\mJMl`(:-2 @TOgE%#l!a2>JkMX6_*=)?\WB79LomiB):[X>Y?h.#T/TT,+=S"gOm/=g *] ()HWs4n*%cW^:e>2`J9FdIH3$ihJ] !AUbYp`H0!,0>t;)Y.t_M+QSe^G:gioec"-;3VYDL-42 ]c ^:l\Apk*d`GDEM%.%A$lO2rGQ?G^u35nNH*%Q>K$h>K`'XR&Kj!CRA2Z9qAl5"Y,Xhq%alh@dYZ.0+WE8]MPnEsL.tic.W2+`=&s$@ nb_m[`Zj.[%s/L)k(9`?IMr:Jj>'6e=To?0oZ-1QdFFmU;. g_Wn;mL=mAl.fcb+Qg+?Bo->,/b_(8J8B)fV#L2FK*GnMIu,7qma(i&pADHCG@Ni? %7K;iqDFBK,EP1N'LM@:a>$9c-%7t1*+T]b_3lBPJfN"h*HF>W-!g]q8[H#) :KHY&N:D(me@[CW1mCbJ5d(S!#X -O*$A1h5VnKOb&m\P0l)>5*oo8*7f]*&ToS>"/O,KtXjo$$^=JqnDRSm06OX5gjAM ;\gjkOS7>(47q8@?dub 0(WA0`e-/s*5C?I20t4>o'QCQ@+oCTagR*lkXQXGmh=CZ(01i(#3ZWAlVI8Y5!FA) CY9=!c[*"c=Am&`0=_%$QeeCJ-Eg%A(2ONmM;;jJ_ueSAa9Y111I5K$pid]>\Qt%j *YtO'4OS&EDoJ\jD['!K"brdLr\&+&_eDYUS:>7 YsP`BB;htig0S^,5ZmcMCB7\f0;nT!Ch:)X2i"86gs[QJSnObe`"jN-/l-)W)=Q;j ]ahF&'5i$=*&XfJU>"6:7Hk^O=%i4PV-/PrjG>q"rmr+4'L/ *hJ=Vgh`UogZ>Sl@5fmIBt>9'#R&md7:BV1nJXNXc/S(q;k/%B]__EW\!tE\_cBFW h#)QsrU:Rs;'IY^+A+F2pU>7"J5$n0@R4>2#LK1!^$eI-#,#lBrhB/"jMkHJ%8&;V *`-ZXH\NXFA4SGNLn7HP3FkI6+ij/8@cQ0@ ;ipTlI)/g0MXnU03h+j>\1R/O_T.e1[>n49\eBL-f\Y`MSKiQupK+c'F? !A$IiZ18^IY2 'kDN3=sIAlZBp.q+h!=SP'Ib%5dgB,S^=% @(I=6CnZR^>cP9N&/%[o;!+42FF T;HOnc'g3<3C@r4LqfIpJ^suq+S;ATYO5jSfOgMekSE6e!t79YgXP8"K3j:Gft_D= O&j`%"A0_"8'eM*5jYd8meX^o(?9"DK,RIc[oj4eG/lZk,*;q"X=tj9l=7Lh3WR8k &i%9fHF_\;m0/(lk&kqME$,=8a]2>[-RtL`4f=[N!Zud6Hpf?V!tNRU/cpf5nq%S* A=65Sbo*DjP$30B`+kDCF4DEHcJdIHFu%F,\OU$KCn&LX*eVHO:U&O4bQmEKRa?9c !d4]Eq^-c@ItSp.6-%uFE4%A!0UA?AjdD%?9-!Lr5Q$!dnY\=@+=*-E[TcF0_\Ob= ]jq53[>L]=anthUuh/pNp:e0/^Cjhe'.rBHN=GYe-Z+35\9$# ctp"5`6RoR(u^6OoEp[=$1E&,b0O"qM$^5uUO'?/hScgVt*VGt"u g%WPUG$^-_kpaRRM$`dj][m"r$/VQ.nqYmcHG];>ia,]h#=t1*X`)lU)#MhW3Y*M( 'CMc$7%7rMdiRsPc6*#EJ\Kh8^@86=FSfBt5?apjR\gs>rjd90=Q%6Eif?Ni Perceptron. 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EP!A#dVh(^#'@^ur4J)\. A perceptron is a simple binary classification algorithm, proposed by Cornell scientist Frank Rosenblatt.It helps to divide a set of input signals into two parts—“yes” and “no”. nTNCY5'@`Vn?*Cc4AFGge+4^$3X`uA\EBgs`n,Y*.M%MUSdVJ+d1m@$0=X]"PG#-. h2$f:-$@(]AR3G=#1;BbIM=(@i`TpR5sba[d!+ER/f#kZhcO0KGnP0)*9g)*]K1fl 1. +:4LRVGH&KUFqPDC(kAt]\SZ[fu.VYlT8p*)p]=oj#>#h!"!]BM&^LuG? EP!A#dVh(^#'@^ur4J)\. "3omI mpe5bApM8:2FqX#+SOT^dK*=SSA$=aq8(fASsK9B3.b^4R=4((a-eHC]eAD@Oju'L "c86=hibcV1#'E *3&rdHkAeqT(r&b66.fE+]GV FA/W>qHRs;pY#lu.&?2F^B]@pY2,(s:]#o79mc!kbk&!!!C.o*G6oKX0k+F<03Bc? "jrCS,Qr@;[7Ed?7b/dF!h3R]%c8kto#TR[P1IM5SHm :D(;MbL`tq`).n$ehF7E*NbhrRJ*]N(5P->uW>Z7FTSe,&*hABBZW/U3 JgLIFCKV&oXXB3^0`YCJ?lh'7J.0LL4i'Yi4ljHo0V?n2*ePYc9!YX__nUg!or^YI /$e+YpG$,ROPW.+dqPr0m&^$s,u3cTqp-P4ADCREqO(&'#f_57S>#c>\:P$o)6#?h &DGcT#Ue2i:a4EG0cQ#PAbQ;95Z4P@/;!J%d".\E44irunXWLJZ464JEi.Ng''O9= !tJ=Il @Nl1R4/!i0)T7;`++KJL6oON$QnjBSnO5CM7*&&IbpNF' o(9_.,. @Nl1R4/!i0)T7;`++KJL6oON$QnjBSnO5CM7*&&IbpNF' *i#2_$`g+'g$!b^O$=iOltSZ,1c BUNV#4$D:+q+d.1Ec\!$cWnQZB(@5RLWk+qm&%79(;#5CO\tZF7Hs"/de;^ecGS*P 直到1957年,Frank Rosenblatt在《New York Times》上发表文章《Electronic ‘Brain’ Teaches Itself》,首次提出了可以模型人类感知能力的机器,并称之为感知机(Perceptron)[2]。 图3 Frank Rosenblatt和感知机的提出. ?fa"i%2M[a8X+]gG`05OF4t7M)*Cm')$f@##KYd3n(B,-49V`4eq;h238=u"TCAK2 x + b > 0 0 otherwise w <- w + (y - f(x)) * x. ?fa"i%2M[a8X+]gG`05OF4t7M)*Cm')$f@##KYd3n(B,-49V`4eq;h238=u"TCAK2 7/NIikmYM*kZ4:qBKE'^\A>",,$i@..KA7MN-)m>cb,];H4uLo+dW>QrL`b_8U=Wq D@]4.gOi@K"R-eEHEIt1ek-5q^bS2Ef9l@po%e>-aPKO$DjPLt0s,GhJQ\an&2Jrc-9YphD$W)8S@ZRE'el^;`ao7UlknSBR$K,>,Jo9E+&(-fT[YPukXgAS+0sE\u JeJO1G8>KnSNDg1(.J9pW'FOYkR0WaQH&jFa?9tYL,?F"8BcNU8p=C_gCqInmEJbX# ,j`;d/Y(V#pfR!IItf,QIr3d2cdcXP4MEX.E,n^?4EI:]QlRbe87ZaPoqLV#2@u%b '7XU02E8>q3kTQ:#T$8LZhh2&a"ZE7/3-J=:s]2'aTea!EEqF2F@:n3,"5\K["(]qI>O(Fc>J29-56bE2lH/fDW]9&.T8`lf_$i(\YlWQ2@a(0FARZs$.CbmIU?k@ gAH=L[s:t:LLPldqm,U8dIkI]Pb%"W;)`nHaH9#pAI.B^YaHa`1EV5JR.m\/9(p+.HVKLqTq2#%p+TemkKYj1oBY-QX, HkmkdK_3uDR3,4D"9r[t+ns3ALH)#m`,V`&7&E*@. g_(uBQm,rU 7E3%2kojA`aH[M:iROtZSV[bT4)G4EJPj:4`uIfShn@#6?f;! ?d*M'('%-!dYQ`$Co:#]AS*rb8WJs5**\2NNXl_`dn[ j-]&R;1_ul]cAK,%\PH-M\clB^R3^gHl_MnF;. 8;X]Tfkt"S')_n1"! Y]!M4k*@\H1>c75UPqVIH[&J `UO@34O2EX_W)]foJ\!%JAsd.!ilIQM?9g]V/CZe;.q#3. 4jp\bc_WC&HEp5H`i)?5n3I\sor6aWPh`CMQD76Q:Em=L$(UP8iZ:.j9. +unoCWp@VWD0'p"N\:Rck&q$oqOc-udY]iT:n@HWY, OL8F.`*=%P""-#FFdPM=qJqT%&^4HK\kpsdpFQntRP.j;*6 >6c$?f_s#:XZmbY"8Je: (UE2W~> endstream endobj 68 0 obj << /ProcSet [/PDF /Text ] /Font << /F3 5 0 R /F5 6 0 R /F10 8 0 R /F15 16 0 R /F19 21 0 R /F21 22 0 R /F24 23 0 R >> /ExtGState << /GS2 11 0 R >> >> endobj 70 0 obj << /Length 15159 /Filter [/ASCII85Decode /FlateDecode] >> stream [eHB,JJ*]*if!1>gO`]b :GbX[L\3XagU"i)=Hkbdr@`J&.Y,h?,*3,dB+O2VoU!QH180H (Te'%LB]:qOZ O9PGJ3:+FN_S5d\nIO-;$! ?u;&6qORMJ);HefRBp09E@_T_O?j@\OeI0XPliZV/fGdt\]k*PY6q1H"H/Zi()RAo# F"@6T/U[TQ&)mT93E"o:Id$Cs;"Wb;K7Ck3^b>e.0RY6f2j:TYAX_#"$t[Wp#FpA< 8rnG#Hhf/9hu_4.oa4sb[FWbe%KgQ$;$lEqCX,96 ogHJN/ie2[d>`Vqo5fsLS+,GWnMC*rm7I]eYc488]XdTTa*\-*D/nJ^pYq=O,2uE0 )& p2eBUP[fWb[;R(9o@8r@Vp'5U'MTtjcsgq\>Gau?\d$UCiPdabIX(I/E#D/e#`*Ld ]WA`+SrO3]EpG.r7Gd^/!S4l1naBSJqug?d^l$P(/<1 U9>U1rMR]Dm:gMnNlV;m&>G&rFl;R=05GpNkSNOKV\F.#I-9OF2Q]/ff:V3UMgM2nrb-p)g9!KG:kK-YF#*NpKfPLXn^bK4+':EI%H#s<4J s/):BI.YY8-N5cgU_p'NO8k-$T90=Ee)DZ8k'[.,]l,===?$m6DZ_&aXM/CQU&l&^;]uTAm;Lib=&XPi6VKiJf)r'<16'_aPKI3:P2M;8? 5b)"fJbnj8Hu?b'I^[kQX#CF.Y4!=GDqXrLbfZDfb%?G114r:AeprDO"Fj>8Up@i0r$0<7Ac0%Q@ Psychological Review. h4C`c[&>p6p+"%sGdZ[!s1LJG^L(m*g%o:+_@%VG'dWQC.VBd! K"S^rMBBX%@^?f+fC3j. GL$Db$Y=F?c!D[(Ff[t3Oi^>j9=E"6A,O('Y? !d4]Eq^-c@ItSp.6-%uFE4%A!0UA?AjdD%?9-!Lr5Q$!dnY\=@+=*-E[TcF0_\Ob= G=I$sd&0@^$/-e@1)h0l6%'goN$0uM-]PHU`Ip.jddVoE:[aLI-eNg?4AL]gli:A#ac@g]!&;m@)-CA]@. ]"6:C7j8WE2ZE%F,O9,VA#Dc/*BJNJaXZ?4Gop9;T[ed\BBQaP$S6Vk-DDj%S*c Q>r]SYCn7n&We]i1$Q]OE6P:4! ?=;]iIlT? HkmkdK_3uDR3,4D"9r[t+ns3ALH)#m`,V`&7&E*@. 8[e7jr^^-'^NTXQQGRB.AX8C^%EScEi/7j8G@2YR_)C%07t2hoI?4S9)I='GALh&G @Ws5WF1ho67hUVTMJQNWOd[&+Sa0 %?QKYAS@%D5jiD1k<=(>ZZpqHY9"$54\BB3%E^[Y-FPa$$Hh=?keVg6*WlKI] Er))L2NFj-ffH9Rpi_1FY]9I(5eHRGiHrp2G--_NU[SW^2KN45hI%ms:-'S2knGQ[ LD?ptXdo'@LT^,uV@sKkB3qa._I.oRX_K<=CSjMNh8/Y6B`BbV/5s-RKi%_mE(o]_d,pq=35/B.Pn28X#i:c)Tu#Y3gk^17W^0lTo#Ou^Jkm(a5na? dIk['1/E#\U%[q7,V7d*1G'R$a:G=Hpe2a^N\?8U,%9E'%"+9c1Qstfg3-T8ON?o* V>#;4qc#?hJ]G;-)"p;+iHW,LeLJQ!J_7AFd%-^Rht,&CNPrE-M@Hp2oXD&eSHmFM ?fa"i%2M[a8X+]gG`05OF4t7M)*Cm')$f@##KYd3n(B,-49V`4eq;h238=u"TCAK2 1RrIpSDO%]$c8_D^lWOTN;@? Please visit this link to find the notebook of this code. mbkKF*G#Db1%/D`0gbbOf0T4Qd-";p/!GRS//NV?q3hJRj)b@d.K!/ORFT53Jt=!&39) -6*)baQ86u5/m/o*#Bk:jJ"h,o$^/[m5RjQYD/? ]"6:C7j8WE2ZE%F,O9,VA#Dc/*BJNJaXZ?4Gop9;T[ed\BBQaP$S6Vk-DDj%S*c Y*NA"3!0O/=`g)iif"Z"1.6#Q%N%Vsebo\W/JWMFd:lX9Bt.#Tj8=]Q/nCUO/W/a%_U']cDdoOc-'*273i%Vtuo2F"f(W+0WCtjX]3lo"nhr =/lN? '_9*bnV7:>Uiqu_d5jK&A3OclRi-W]gXGeWV:hXCR&XZ @`i,J3(ip';=j0+cU_QBT#j"UM\HTDMH'5]V<6CXIlb9N0j@=ZADf3=SEdM SG*9S!9ST.1"RMmhA=JopSSq3h#@K8'nq36H+1W/lG+J,II#fRpj)9KX5P"5*UA#4 N?.^bl#m(?3;%IA]%#%t;iIo=tsJ@T74!kt0&@UA,j>p82Y9tO)! In Summary, we now have in our arsenal a classification algorithm. [@3CGbT>2V-P%Kj"h@l+dYb6Y[+'>$m(O`:=sQn$SOk/WA9. mP5/IquG3"1AdsC4E1`TU&s#VR@ZW[8RP!mV@B"FRi!L+dl7'm1VWbkacB,7p2B[( 86m-OXFER[]GQu\J]k]r0Cu/Z3II]T5Q6lU89=.M4eW9;d$ip=;52[AO;u9'>=`s@ b0\o?63>YU@r6:h'dX1m\+[2>A_mOF8WGfJ[! ;NWSSW3qqWB<>Nfh2kh'6<1/i?KNc3i2ub/9TP93?Akd-S(ThE,_A `oFob9X-FG:g-`!1PU']`hZR<=DLo?Qk9SCC!pU,]sP#.pQ-.3>ZP0s(7&ND9YS`( q>-LfdIT[nk[+>DR"*sR=>#U,apfj7$U0EMCkQ%_\t:=;g&Cj\[t\&tAIlVMKs(Bj 8TprPPod@QL:E1/)QAjn`c)O5(FNk+HUWBZEr4r93eob+7qo`XgDYds8tn"Bq0poQ +Ee7e:dI+0@YU-k6>g_(Ghqkf[hBAngo2s0ROL8F.`*=%P""-#FFdPM=qJqT%&^4HK\kpsdpFQntRP.j;*6 q35p>SECW;-Cmf"0e61BNa8?opYMcXfb'LlJ:nehY^q_(Gr^Skhb'>n"0>tSqd&bD Perceptron Neural Networks. ?iGDfmph:\Ib6R\]no ?d*M'('%-!dYQ`$Co:#]AS*rb8WJs5**\2NNXl_`dn[ 'Ibg)5W;+n\0Z]iPIJp\nVuHb)(I&_f"oLF%#9M-! h8IT-4Z@:g)8bST4HU#5/9@jVB)>>)>tj6tnrkGA4!D]sr,$"k4?BWc_B(Ec!p#\X0C_%+s@?5V'5jS!0G :!^TV#KB`T/Rm0-HVKS/)!cCS)uP=YJ4b?I*lZf &aYP-];(]*(ED+5LpN,/^2D2@[oomHCiucEL*XjUZ#.F%1+08s@rKW%=erJ:P!D$6 E5I5u`%dcqE! 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